- LIST OF PUBLICATIONS:
In Soil Science: 170
In Soil and Crop Management: 100
In Weed Science: 96
Total number of publications: 366
- I. SOIL SCIENCE
1962
Datta, N.P., J.E. Shinde, M.B. Kamath, and S.K. De Datta. 1962. Effect of soil amendment (EDTA) on uptake of soil and fertilizer phosphorus by wheat, rice, and berseem. J. Indian Soc. Soil Sci. 10:121-128.
Datta, N.P., J.E. Shind, M.B. Kamath, and S.K. De Datta. 1962. Effect of sodium silicate on the uptake of soil and fertilizer phosphorus by wheat, rice and berseem (Trifolium alexandrinum). Ind. J. Agr. Sci. 32(2):219-227.
Fox, R.L., S.K. De Datta, and G.D. Sherman. 1962. Phosphorus solubility and availability to plants and the aluminum status of Hawaiian soils as influenced by liming. Trans. Int. Soil Sci. Conf., New Zealand. Comm. IV. 574-583.
1963
De Datta, S.K., R.L. Fox, and G.D. Sherman. 1963. Availability of fertilizer phosporus in three latosols of Hawaii. Agron. J. 55:311-313.
1964
Fox, R.L., S.K. De Datta, and J.M. Wang. 1964. Phosphorus and aluminum uptake by plants from latosols in relation to liming. Trans. 8th Int. Soil Sci. Congress, Bucharest 1964. IV:595-603.
1965
De Datta, S.K. and J.C. Moomaw. 1965. Availability of phosphorus to sugar cane in Hawaii as influenced by various phosphorus fertilizers and methods of application. Exp. Agric. 1:261-270.
1966
De Datta, S.K., F.L. Himes, and R.E. Franklin. 1966. Partial characterization of some strontium 90 and Yttrium 90 soil organic matter complexes. Soil Sci. and Pl. Nutr. 12(6):207-212.
De Datta, S.K., J.C. Moomaw, and R.S. Dayrit. 1966. Nitrogen response and yield potential of some rice varietal types in the tropics. IRC Newsl. 15(3):16-27
De Datta, S.K., J.C. Moomaw, V.V. Racho, and G.V. Simsiman. 1966. Phosphorus supplying capacity of lowland rice soils. Soil Sci. Soc. Am. Proc. 30(5):613-617.
1967
De Datta, S.K., R.E. Franklin, and F.L. Himes. 1967. Partial characterization of soil polysaccharide-strontium 90 – Yttrium 90 complexes. Soil Sci. 103(1):47-55.
Simsiman, G.V., S.K. De Datta, and J.C. Moomaw. 1967. Sources of nitrogen and methods of application for flooded rice. I. Comparison of two methods of applying slow-release and standard fertilizer materials. J. Agric. Sci. (Camb.) 69:189-196.
1968
De Datta, S.K. 1968. Fertilizer responses of rice in tropical rice. Pages 37-49. In Proc. and papers. Committee for the coordination of investigations of the Lower Mekong Basin. 4th Seminar on Economics and Social Studies (Rice Production). Los Banos, Laguna, Philippines.
De Datta, S.K., C.P. Magnaye, and J.C. Moomaw. 1968. Efficiency of fertilizer nitrogen (N15-labelled) for flooded rice. Trans. 9th Int. Soil Sci. Congr., Adelaide, Australia. IV:67-76.
De Datta, S.K., A.C. Tauro and S.N. Balaoing. 1968. Effect of plant type and nitrogen level on the growth characteristics and grain yield of indica rice in the tropics. Agron. J. 60:643-647.
Racho, V.V. and S.K. De Datta. 1968. Nitrogen economy of cropped and uncropped flooded rice soils under field conditions. Soil Sci. 105:419-427.
1969
De Datta, S.K. and C.P. Magnaye. 1969. A survey of forms and sources of fertilizer nitrogen for flooded rice. Soils and Fertilizers Abstract 32(2):103-109.
De Datta, S.K., C.P. Magnaye, and J.T. Magbanua. 1969. Response of rice varieties to time of nitrogen application in the tropics. Pages 73-87. In Proc. Symp. (Trop. Agric. Res.) Optimization of fertilizer effects in rice. Sept. 1969, Tokyo, Japan.
Duangpatra, P. and S.K. De Datta. 1969. Urea-ammonium phosphate and other phosphorus sources for flooded rice. IRC Newsl. 18(4):1-17.
1970
Nangju, D. and S.K. De Datta. 1970. Effects of varietal types and nitrogen level on the optimum time of harvest and the amount of breakage in transplanted rice. Agron. J. 62:468-474.
1971
Fagade, S.O. and S.K. De Datta. 1971. Leaf area index, tillering capacity and grain yield of tropical rice as affected by plant density and nitrogen level. Agron. J. 63(3):503-506.
Jana, R.K. and S.K. De Datta. 1971. Effects of solar energy and soil moisture tension on the nitrogen response of upland rice. Proc. Int. Symp. on Soil Fert. Eval., New Delhi. Feb. 9-14, 1971. 1:487-497.
1972
De Datta, S.K., W.N. Obcemea, and R.K. Jana. 1972. Protein content of rice grain as affected by nitrogen fertilizer and some triazines and substituted ureas. Agron. J. 64:785-788.
Wallihan, E.F., J.C. Moomaw, and S.K. De Datta. 1972. Optimum level of nitrogen in rice plants. I. Comparison of solution culture with flooded paddy. Soil Sci. 118(4):263-266.
1973
Seetanun, W. and S.K. De Datta. 1973. Grain yield, milling quality and seed viability of rice as influenced by time of nitrogen application and time of harvest. Agron. J. 65:390-394.
1974
De Datta, S.K. and M.S.A.A.A. Kerim. 1974. Water and nitrogen economy of rainfed rice as affected by soil puddling. Soil Sci. Soc. Amer. Proc. 38(3):515-518.
De Datta, S.K., F.A. Saladaga, W.N. Obcemea, and T. Yoshida. 1974. Increasing efficiency of fertilizer nitrogen in flooded tropical rice. Pages 265-268. In Proc. FAI-FAO Seminar on optimising agricultural production under limited availability of fertilizers, New Delhi. December 13-14, 1974.
Engelstad, O.P., A. Jugsujinda, and S.K. De Datta. 1974. Response by flooded rice to phosphate rocks varying in citrate solubility. Soil Sci. Soc. Amer. Proc. 38(3):524-529.
Wallihan, E.F., J.C. Moomaw, and S.K. De Datta. 1974. Variable optimum concentrations of nitrogen in rice plants. Soil Sci. 118(4):263-266.
1975
De Datta, S.K. and R. Feuer. 1975. Soils on which upland rice is grown. Pages 27-39. In Major research in upland rice. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
De Datta, S.K. and K.A. Gomez. 1975. Changes in soil fertility under intensive rice cropping with improved varieties. Soil Sci. 120(5):360-366.
Brady, N.C., T. Yoshida, S.K. De Datta, R. Barker, R.R. Harwood, and F.N. Ponnamperuma. 1975. A summary of research to increase the efficiency of input use with emphasis on chemical fertilizers. Pages 212-225. In Proc. Planning and organization meetings, Fertilizer I.N.P.U.T.S. Project. Honolulu, Hawaii. October 21-25, 1974.
1976
Thasanasongchan, A., B.B. Mabbayad, and S.K. De Datta. 1976. Methods, sources, and time of nitrogen application for upland rice. Philipp. J. Crop Sci. 1(4):179-185.
1978
Abilay, W.P., Jr. and S.K. De Datta. 1978. Management practices for correcting zinc deficiency in transplanted and direct-seeded wetland rice. Philipp. J. Crop Sci. 3(3):190-194.
De Datta, S.K. 1978. Fertilizer management for efficient use in wetland rice soils. Pages 671-701. In International Rice Research Institute. Soils and rice. Los Banos, Laguna. Philippines.
Mikkelsen, D.S., S.K. De Datta, W.N. Obcemea. 1978. Ammonia volatilization losses from flooded rice soils. Soil Sci. Soc. Am. J. 42(5):725-730.
Parish, D.H. and S.K. De Datta. 1978. Rice fertilization for optimum yields. AGRII/1-11 Proc. FAI-IFDC Fertilizer Seminar on Trends in Consumptions and Production, Dec 1-3, 1977. New Delhi, India.
1979
Bolton, F.R. and S.K. De Datta. 1979. Dry soil mulching in tropical rice. Soil Sci. Plant Nutr. 25(2):173-181.
Mikkelsen, D.S. and S.K. De Datta. 1979. Ammonia volatilization from wetland soils. Pages 135-136. In International Rice Research Institute. Nitrogen and rice. Los Banos, Laguna, Philippines.
Nguu, N.V. and S.K. De Datta. 1979. Increasing the efficiency of fertilizer nitrogen in wetland rice by manipulation of plant density and plant geometry. Field Crops Res. 2(1):19-34.
Prasad, R. and S.K. De Datta. 1979. Increasing fertilizer nitrogen efficiency in wetland rice. Pages 465-484. In International Rice Research Institute. Nitrogen and rice. Los Banos, Laguna, Philippines.
Savant, N.K. and S.K. De Datta. 1979. An undisturbed core sampling and sectioning technique for wetland soil. Comm. Soil Sci. Plant Anal. 10(4):775-783.
Savant, N.K. and S.K. De Datta. 1979. Nitrogen release patterns from deep placement sites of urea in a wetland rice soil. Soil Sci. Soc. Amer. J. 43(1):131-134.
Amarante, S.T. and S.K. De Datta. 1979. An alternative source of phosphorus for rice in the Philippines. Phil. J. Crop Sci. 4(4):127-129.
1980
App, A.A., I.Watanabe, M. Alexander, W. Ventura, D. Daez, T. Santiago, and S.K. De Datta. 1980. Nonsymbiotic nitrogen fixation associated with the rice plant in flooded soils. Soil Sci. 130(5):283-289.
Craswell, E.T. and S.K. De Datta. 1980. Recent developments in research on nitrogen fertilizers for rice. IRRI Res. Pap. Ser. 49. 11p.
Savant, N.K. and S.K. De Datta. 1980. Movement and distribution of ammonium-N following deep placement of urea in wetland rice soil. Soil Sci. Soc. Amer. J. 44(3):559-565.
Calabio, J.C., F.V. Garcia, S.K. De Datta, E.T. Craswell, and I.R.P. Fillery. 1980. Alternative strategies for increasing nitrogen fertilizer efficiency in wetland rice soils. Philipp. J. Crop Sci. 5(4):144-149.
1981
Wanasuria, S., K. Mengel, and S.K. De Datta. 1981. Use of electroultrafiltration (EUF) technique to study the potassium dynamics of wetland soils and potassium uptake by rice. Soil Sci. Plant Nutr. 27(2):137-149.
Wanasuria, S., S.K. De Datta, and K. Mengel. 1981. Rice yield in relation to electroultrafiltration extractable soil potassium. Plant and Soil 59(1):23-31.
Fagi, A.M. and S.K. De Datta. 1981. Environmental factors affecting nitrogen efficiency in flooded tropical rice. Fert. Res. 2:53-67.
De Datta, S.K. and K.A. Gomez. 1981. Interpretative analysis of the international trials on nitrogen fertilizer efficiency in wetland rice. Pages 1-5. In Fertilizer International. The British Sulphur Corp. Ltd., Parnell House, England.
De Datta, S.K., P.J. Stangel and E.T. Craswell. 1981. Evaluation of nitrogen fertility and increasing fertilizer efficiency in wetland rice soils. Pages 171-206. In Proc. Symp. on Paddy Soils. Science Press, Beijing, People’s Republic of China.
De Datta, S.K. 1981. Increasing fertilizer nitrogen efficiency by minimizing losses in tropical wetland rice soils. The Madras Agric. J. 67(11-12):54-63.
Craswell, E.T., S.K. De Datta, W.N. Obcemea and M. Hartantyo.1981. Time and mode of nitrogen fertilizer application to tropical wetland rice. Fert. Res. 2:247-259.
1982
De Datta, S.K. 1982. Management of rice soils for maximizing production. Pages 229-243. In Proc. 12th Int. Congr. of Soil Sci. Symp. Papers II. Vertisols and Rice Soils of the Tropics. 8-16 Feb. 1982. New Delhi, India.
Savant, N.K., S.K. De Datta, and E.T. Craswell. 1982. Distribution patterns of ammonium nitrogen and N uptake by rice after deep placement of urea supergranules in wetland soil. Soil Sci. Soc. Amer. J. 46(3):567-573.
Aragon, E.L. and S.K. De Datta. 1982. Drought response of rice at different nitrogen levels using line source sprinkler system. Irrigation Sci. 3(2):63-73.
De Datta, S.K. and E.T. Craswell. 1982. Nitrogen fertility and fertilizer management in wetland rice soils. Pages 283-316. In Rice research strategies for the future. Int. Rice Res. Inst., Los Banos, Philippines.
De Datta, S.K. and K.A. Gomez. 1982. Changes in phosphorus and potassium responses in wetland rice soils in South and Southeast Asia. Pages 127-146. In E. Pushparajah and Sharifuddin H.A. Hamid, eds. Phosphorus and potassium in the tropics. The Malaysian Soc. Soil Sci., Kuala Lumpur.
Savant, N.K. and S.K. De Datta. 1982. Nitrogen transformation in wetland rice soils. Adv. Agron. 35:241-302.
Hundal, S.S. and S.K. De Datta. 1982. Effect of dry-season soil management of water conservation for the succeeding rice crop in a tropical soil. Soil Sci. Soc. Am. J. 46(5):1081-1086.
Amarante, S.T. and S.K. De Datta. 1982. Residual effects of phosphorus fertilizer in lowland rice in the Philippines. Philippine J. Crop Sci. 7(2):117-122.
1983
Fagi, A.M. and S.K. De Datta. 1983. Physical properties of rainfed wetland rice soils as affected by the cropping system and crop residue management. Field Crops Res. 6:189-204.
De Datta, S.K., I.R.P. Fillery, and E.T. Craswell. 1983. Results from recent studies on nitrogen fertilizer efficiency in wetland rice. Outlook on Agriculture 12(3):125-134.
De Datta, S.K. 1983. Fertilizers and soil amendments for tropical rice. Pages 175-214. In Rice production manual, Philippines (rev. ed.). University of the Philippines at Los Banos College of Agriculture, International Rice Research Institute, Philippine Council for Agriculture and Resources Research and Development, and Department of Agriculture-Bureau of Agricultural Extension.
De Datta, S.K. 1983. Phosphorus requirements and phosphorus fertilization of lowland rice. Pages 401-417. In Proc. 3rd International Congress on Phosphorus Compounds, Brussels, Belgium, 4-6 Oct. 1983.
1984
Cao, Zhi-Hong, S.K. De Datta and I.R.P. Fillery. 1984. Effect of placement methods on floodwater properties and recovery of applied nitrogen (15N-labeled urea) in wetland rice. Soil Sci. Soc. Am. J. 48:196-203.
Cao, Zhi-Hong, S.K. De Datta and I.R.P. Fillery. 1984. Nitrogen-15 balance and residual effects of urea-N in wetland rice fields as affected by deep placement techniques. Soil Sci. Soc. Am. J. 48:203-208.
Keerthisinghe, G., K. Mengel and S.K. De Datta. 1984. The release of nonexchangeable ammonium (15N-labeled) in wetland rice soils. Soil Sci. Soc. Am. J. 48:291-294.
Hundal, S.S. and S.K. De Datta. 1984. In situ water transmission characteristics of tropical soil under rice-based cropping systems. Agricultural Water Management 8:387-396.
De Datta, S.K. and S.S. Hundal. 1984. Effects of organic matter management on land preparation and structural regeneration in rice-based cropping systems. Pages 399-416. Organic matter and rice. Int. Rice Res. Inst., Los Banos, Philippines.
Obcemea, W.N., S.K. De Datta and F.E. Broadbent. 1984. Movement and distribution of fertilizer nitrogen as affected by depth of placement in wetland rice. Fertilizer Research 5:125-148.
App, A., T. Santiago, C. Daez, C. Menguito, W. Ventura, A. Tirol, J. Po., I. Watanabe, S.K. De Datta and P. Roger. 1984. Estimation of the nitrogen balance for irrigated rice and the contribution of phototrophic nitrogen fixation. Field Crops Research 9:17-27.
Fillery, I.R.P., J.R. Simpson, and S.K. De Datta. 1984. Influence of field environment and fertilizer management on ammonia loss from flooded rice. Soil Sci. Soc. Am. J. 48:914-920.
De Datta, S.K. and R.A. Morris. 1984. Systems approach for the management of fertilizers in rice and rice-based cropping sequences. Proceedings, Systems approach to fertilizer industry, New Delhi, India, 8-10 Dec 1983, AGS II-2/1-42.
Na Nagara, T. and S.K. De Datta. 1984. Soil water regimes and nutrient uptake of rice. Proc. 5th ASEAN Soil Conf., Bangkok, Thailand, H12.1-H12.23.
Hundal, S.S. and S.K. De Datta. 1984. Water table and tillage effects on root distribution, soil water extraction and yield of sorghum grown after wetland rice in tropical soil. Field Crops Res. 9:291-303.
Calabio, J.C., J.P. Descalsota, M.A. Mazid, and S.K. De Datta.1984. Fertilizer applicators for deep placement of nitrogen in lowland rice under resource-scarce situation in the Philippines. Phil. J. Crop Sci. 9(1):33-39.
Aragon, E.L., J.C. Calabio, J.L. Padilla, R.A Shad, M.I. Samson and S.K. De Datta. 1984. Fertilizer management under different systems of rice culture. Philipp. J. Crop Sci. 9(2):105-116.
1985
Calabio, J.C. and S.K. De Datta. 1985. Increasing productivity and protein content using early-maturing rices and efficient nitrogen management. Fertilizer Research 6(1):73-84.
Craswell, E.T., S.K. De Datta, C.S. Weeraratne and P.L.G. Vlek. 1985. Fate and efficiency of nitrogen fertilizers applied to wetland rice. I. The Philippines. Fertilizer Research 6(1):49-63.
De Datta, S.K. 1985. Availability and management of nitrogen in lowland rice in relation to soil characteristics. Pages 247-267. In Proc. Workshop on Characterization, classification, and utilization of wetland soils, 26 March-6 April 1984. International Rice Research Institute, Los Banos, Laguna, Philippines.
Greenland, D.J. and S.K. De Datta. 1985. Constraints to rice production and wetland soil characteristics. Pages 23-36. In Proc. Workshop on Characterization, classification, and utilization of wetland soils, 26 March-6 April 1984. International Rice Research Institute, Los Banos, Laguna, Philippines.
Roy, A.C. and S.K. De Datta. 1985. Phosphate adsorption isotherms for evaluating phosphorus requirement of wetland rice soils. Plant and Soil 86:185-196.
Sharma, P.K. and S.K. De Datta. 1985. A core sampler for puddled soils. Soil Sci. Soc. Am. J. 49:1069-1070.
Schon, H.G., K. Mengel and S.K. De Datta. 1985. The importance of initial exchangeable ammonium in the nitrogen nutrition of lowland rice soils. Plant and Soil 86:403-413.
De Datta, S.K. and D.S. Mikkelsen. 1985. Potassium nutrition of rice. Pages 665-695. In Potassium in Agriculture. ASA, CSSA, SSSA, Madison, Wisconsin, USA.
De Datta, S.K. 1985. Nutrient requirement for sustained high yields of rice and other cereals. Pages 97-120. In Proc. 19th International Potash Institute Colloquium on Potassium in the Agricultural Systems of the Humid Tropics. International Potash Institute, 25-29 Nov 1985, Bangkok, Thailand.
Sharma, P.K. and S.K. De Datta. 1985. Puddling influence on soil, rice development, and yield. Soil Sci. Soc. Am. J.49:1451-1457.
Sharma, P.K. and S.K. De Datta. 1985. Effects of puddling on soil physical properties and processes. Pages 217-234. Soil physics and rice. International Rice Research Institute, Los Banos, Laguna, Philippines.
Keerthisinghe, G., S.K. De Datta, and K. Mengel. 1985. Importance of exchangeable and nonexchangeable soil NH4+ in nitrogen nutrition of lowland rice. Soil Science 140(3):194-201.
1986
Fillery, I.R.P. and S.K. De Datta. 1986. Ammonia volatilization from nitrogen sources applied to rice fields. I. Methodology, ammonia fluxes, and nitrogen-15 loss. Soil Sci. Soc. Am. J. 50:80-86.
Fillery, I.R.P., P.A. Roger, and S.K. De Datta. Ammonia volatilization from nitrogen sources applied to rice fields. II. Floodwater properties and submerged photosynthetic biomass. Soil Sci. Soc. Am. J. 50:86-91.
Mengel, K., H.G. Schon, G. Keerthisinghe, and S.K. De Datta. 1986. Ammonium dynamics of puddled soils in relation to growth and yield for lowland rice. Fertilizer Research 9:117-130.
De Datta, S.K. 1986. Improving nitrogen fertilizer efficiency in lowland rice in tropical Asia. Fertilizer Research 9:171-186.
Fillery, I.R.P., S.K. De Datta, and E.T. Craswell. 1986. Effect of phenyl phosphorodiamidate on the fate of urea applied to wetland rice fields. Fertilizer Research 9:251-263.
Fillery, I.R.P., J.R. Simpson, and S.K. De Datta. 1986. Contribution of ammonia volatilization to total nitrogen loss after applications of urea to wetland rice fields. Fertilizer Research 8:193-202.
DeDatta, S.K. 1986. Relevant technology for improving fertilizer use efficiency in lowland rice. Pages 177-186. In Rice progress assessment and orientation in the 1980’s. Proc. 16th session of the International Rice Commission, 10-14 June 1985, Los Banos, Philippines.
Sharma, P.K. and S.K. De Datta. 1986. Physical properties and processes of puddled rice soils. Adv. Soil Science 5:140-178.
Mamaril, C.P., S.K. De Datta, and R.R. Villapando. 1986. Results of INSFFER rainfed lowland rice trials. Pages 103-112. In Proc. Int. Conf. on Progress in rainfed lowland rice, Bhubaneswar, India, Oct.15-20, 1984. Int. Rice Res. Inst., Los Banos, Philippines.
Goswami, N.N., S.K. De Datta, and M.V. Rao. 1986. Soil fertility and fertilizer management for rainfed lowland rice. Pages 275-283. In Proc. Int. Conf. on Progress in rainfed lowland rice, Bhubaneswar, India, Oct. 15-20, 1984. Int. Rice Res. Inst., Los Banos, Philippines.
Descalsota, J.P., J.C. Calabio, R.C. Evangelista, S.T. Amarante, and S.K. De Datta. 1986. Integration of inorganic and organic nitrogen sources for lowland rice. Phillip. J. Crop Sci. 11(2):97-106.
Sharma., P.K. and S.K. De Datta. 1986. Use of minimum tillage in rice-based cropping systems. Pages 45-62. In Proceedings of the International Symposium on Minimum Tillage. Bangladesh Agricultural Research Council (Publ.) Dhaka, Bangladesh, 26-27 February 1986.
1987
De Datta, S.K., W.N. Obcemea, R.Y. Chen, J.C. Calabio and R.C. Evangelista. 1987. Effect of water depth on nitrogen use efficiency and nitrogen-15 balance in lowland rice. Agron. J. 79:210-216.
De Datta, S.K. 1987. Advances in soil fertility research and nitrogen fertilizer management for lowland rice. Pages 27-41. In Efficiency of nitrogen fertilizers for rice. Proc. Meeting of the International Network on Soil Fertility and Fertilizer Evaluation for Rice, Griffith, New South Wales, Australia, 10-16 April 1985. Int. Rice Res. Inst., Los Banos, Philippines.
Schier, H.F., S.K. De Datta and K. Mengel. 1987. Dynamics of 15N labeled ammonium sulfate in various inorganic and organic soil fractions of wetland rice soils. Biology and Fertility of Soils 4: 171-177.
Sharma, P.K., S.K. De Datta and C. Redulla. 1987. Root growth and yield response of rainfed lowland rice to planting methods. Experimental Agriculture 23(3): 305-313.
De Datta, S.K. 1987. Nitrogen transformation processes in relation to improved cultural practices for lowland rice. Plant and Soil 100: 47-69.
De Datta, S.K., I.R.P. Fillery, W.N. Obcemea and R.C. Evangelista. 1987. Floodwater properties, nitrogen utilization, and nitrogen-15 balance in a calcareous lowland rice soil. Soil Sci. Soc. Am. J. 51: 1355-1362.
Broadbent, F.E., S.K. De Datta, and E.V. Laureles. 1987.
Measurement of nitrogen utilization efficiency in rice genotypes. Agron. J. 79: 786-791.
1988
Sharma, P.K, S.K. De Datta, and C.A. Redulla. 1988. Tillage effects on soil physical properties and wetland rice yield. Agron. J. 80:34-39.
De Datta, S.K., R.J. Buresh, M.I. Samson, and Wang Kai-Rong. 1988. Nitrogen use efficiency and Nitrogen-15 balances in broadcast-seeded flooded and transplanted rice. Soil Sci. Soc. Am. J. 52:849-855.
Buresh, R.J., S.K. De Datta, J.L. Padilla and M.I. Samson. 1988. Effects of two urease inhibitors on floodwater ammonia following urea application to lowland rice. Soil Sci. Soc. Am. J. 52:856-861.
Sharma, P.K., S.K. De Datta, and C.A. Redulla. 1988. Response of maize (Zea mays L.) and mungbean (Vigna radiata L.) to tillage in relation to water table depth in tropical lowland rice soils. Soil & Tillage Res. 12:65-79.
Watanabe, I., S.K. De Datta, and P.A. Roger. 1988. Nitrogen cycling in wetland rice soils. Pages 239-256. In J.R. Wilson, ed. Proceedings of the International Symposium on Advances in Nitrogen Cycling in Agricultural Ecosystems, Brisbane, Australia, 11-15 May 1987. C.A.B. International: U.K.
Schier, H.F., S.K. De Datta, K. Mengel, E.P. Marqueses and J.E. Faronilo. 1988. Nitrogen use efficiency, floodwater properties and nitrogen-15 balance in transplanted lowland rice as affected by liquid urea band placement. Fertilizer Research 16:241-255.
De Datta, S.K. and F.E. Broadbent. 1988. Methodology for evaluating nitrogen utilization efficiency by rice genotypes. Agron. J. 80:793-798.
Buresh, R.J., S.K. De Datta, J.L. Padilla, and M.I. Samson. 1988. Field evaluation of two urease inhibitors with transplanted lowland rice. Agron. J. 80:763-768.
De Datta, S.K., M.E. Raymundo, and D.J. Greenland. 1988. Managing wet vertisols in rice-based cropping systems. Pages 117-127. In: Vertisols: Their distribution, properties, classification and management. Texas A&M University Printing Center, College Station, Texas, U.S.A.
Buresh, R.J., S.K. De Datta, J.L. Padilla, and T.T. Chua. 1988. Potential of inhibitors for increasing response of lowland rice to urea fertilization. Agron. J. 80:947-952.
De Datta, S.K., F.V. Garcia, W.P. Abilay, Jr., and J.M. Alcantara. 1988. Yield constraints and fertilizer management in shallow rainfed transplanted and broadcast seeded lowland rice in the Philippines. IRRI Research Paper Series 132. International Rice Research Institute, P.O. Box 933, Manila, Philippines. 14 p.
De Datta, S.K., K.A. Gomez and J. Descalsota. 1988. Changes in yield response to major nutrients and in soil fertility under intensive rice cropping. Soil Science 146(5):350-358.
De Datta, S.K. 1988. Urea: Experience in lowland rice. Pages 23-37. In E. Pushparajah, A. Husin and A.T. Bachik, eds. Proc., International Symposium on Urea Technology and Utilization, Kuala Lumpur, Malaysia, March 16-19, 1987. Malaysia Society of Soil Science, Kuala Lumpur.
Biswas, T.K and S.K De Datta. 1988. Nitrogen transformations in green manure- and urea-amended lowland rice soil. Pages 235-257. In Proc. First International Symposium on Paddy Soil Fertility, 6-13 December, 1988. Chiangmai, Thailand.
Obcemea, W.N., J.G. Real, and S.K. De Datta. 1988. Effect of soil texture and nitrogen management on ammonia volatilization and total nitrogen losses. Philipp. J. Crop Sci. 13(3)145-153.
1989
De Datta, S.K. and R.J. Buresh. 1989. Integrated nitrogen management in irrigated rice. Adv. Soil Sci. 10:143-169.
De Datta, S.K. 1989. Rice. Pages 41-51. In D.L. Plucknett and H.B. Sprague, eds. Detecting mineral nutrient deficiencies in tropical and temperate crops. Westview Press, Inc., Boulder, Colorado.
De Datta, S.K. 1989. Managing lowland rice soils for improved crop yields. Pages 39-54. In Proceedings of First National Congress of Soil Science, Lahore, Pakistan, 6-8 October 1985. Soil Science Society of Pakistan, Lahore, Pakistan.
De Datta, S.K. 1989. Integrated nutrient management in relation to soil fertility in lowland rice-based cropping systems. Proceedings of the International Symposium on Rice Farming Systems New Directions, Rice Research and Training Center, Sakha, Egypt, 31 Jan -3 Feb 1987. International Rice Research Institute, P.O. Box 933, Manila, Philippines.
De Datta, S.K., A.C.F. Trevitt, J.R. Freney, W.N. Obcemea, J.G. Real, and J. R. Simpson. 1989. Measuring nitrogen losses from lowland rice using bulk aerodynamic and nitrogen-15 methods. Soil Sci. Soc. Am. J. 53: 1275-1281.
Mambani, B., S.K. De Datta, and C.A. Redulla. 1989. Land preparation requirements for rainfed rice as affected by climatic water balance and tillage properties of lowland soils. Soil & Tillage Res. 14:219-230.
Sharma, P.K., S.K. De Datta, and C.A. Redulla. 1989. Effect of percolation rate on nutrient kinetics and rice yields in tropical rice soils. I. Role of soil organic matter. Plant and Soil 119(1):111-120.
Sharma, P.K., S.K. De Datta, and C. A. Redulla. 1989. Effect of percolation rate on nutrient kinetics and rice yields in tropical rice soils. II. Role of straw amendments. Plant and Soil 119(1): 121-126.
Yodkeaw, M. and S.K. De Datta. 1989. Effects of organic matter and water regime on the kinetics of iron and manganese in two high pH rice soils. Soil Sci. Plant Nutr. 35(3): 323-335.
Muirhead, W.A., S.K. De Datta, P.A. Roger, and R.M. Gusto. 1989. Effect of algicides in reducing NH3 loss from urea applied to transplanted rice. I. Floodwater chemistry and biota. Fert. Res. 21:95-107.
1990
Buresh, R.J. and S.K. De Datta. 1990. Denitrification losses from puddled rice soils in the tropics. Biol. Fert. Soils 9:1-13.
Freney, F.R., A.C.F. Trevitt, S.K. De Datta, W.N. Obcemea, and J. G. Real. 1990. The interdependence of ammonia volatilization and denitrification as nitrogen loss processes in flooded rice in the Philippines. Biol. Fert. Soils 9:31-36.
Perez, C.M., B.O. Juliano, S.K. De Datta, S.T. Amarante. 1990. Effect of nitrogen fertilizer treatment and source and season on grain quality of IR64 rice. Plant Foods for Human Nutrition 40:123-130.
Samson, M.I., R.J. Buresh, and S.K. De Datta. 1990. Evolution and soil entrapment of nitrogen gases formed by denitrification in flooded soil. Soil Sci. Plant Nutr. 36(2):299-307.
Schnier, H.F., M. Dingkuhn, S.K. De Datta, E.P. Marqueses, and J.E. Faronilo. 1990. Nitrogen-15 balance in transplanted and direct seeded flooded rice as affected by different methods of urea application. Biol. Fert. Soils 10:89-96.
Mambani, B., S.K. De Datta, and C.A. Redulla. 1990. Soil physical behavior and crop responses to tillage in lowland rice soils of varying clay content. Plant and Soil 126:227-235.
De Datta, S.K., R.J. Buresh, and C.P. Mamaril. 1990. Increasing nutrient use efficiency in rice with changing needs. Fert. Res. 26:157-167.
Padilla, J.L., R.J. Buresh, S.K. De Datta, and E.U. Bautista. 1990. Incorporation of urea in puddled rice soils as affected by tillage implements. Fert. Res. 26:169-178.
De Datta, S.K., R.J. Buresh, W.N. Obcemea and E.G. Castillo. 1990. Nitrogen-15 balances and nitrogen fertilizer use efficiency in upland rice. Fert. Res. 26:179-187.
1991
Becker, M., K.H. Diekmann, J.K. Ladha, S.K. De Datta and J.C.G. Ottow. 1991. The effect of NPK on the growth and nitrogen fixation of Sesbania rostrata as a green manure for lowland rice. (Oryza sativa L.) Plant and Soil 132: 149-158.
Buresh, R.J., S.K. De Datta, M.I. Samson, Sakorn Phongpan, Patoom Snitwongse, A.M. Fagi, and R. Tejasarwana. 1991. Denitrification and nitrous oxide flux from urea basally applied to puddled soils. Soil Sci. Soc. Am. J. 55:268-273.
De Datta, S.K., R.J. Buresh, M.I. Samson, W.N. Obcemea, and J.G. Real. 1991. Direct measurement of ammonia and denitrification fluxes from urea applied to rice. Soil Sci. Soc. Am. J. 55:543-548.
Buresh, R.J. and S.K. De Datta. 1991. Nitrogen dynamics and management in rice-lequme cropping systems. Adv. Agron. 45:1-59.
Osuna-Canizalez, F.J., S.K. De Datta and J.M. Bonman. 1991. Nitrogen form and silicon nutrition effects on resistance to blast disease of rice. Plant and Soil 135:223-231.
Sanyal, S.K. and S.K. De Datta. 1991. Chemistry of phosphorus transformations in soil. Adv. Soil Sci. 16:1-120.
Shah, A.L. and S.K. De Datta. 1991. Sulphur and Zn interactions in lowland rice. Philipp. J. Crop Sci. 26 (1):15-18.
1993
Diekmann, K. H., S. K. De Datta and J.C.G. Ottoe. 1993. Nitrogen uptake and recovery from urea and green manure in lowland rice measured by 15N and nonisotope techniques. Plant and Soil 148:91-99.
Buresh, R. J., E. G. Castillo, and S. K. De Datta. 1993. Nitrogen lossesin puddled soils as affected by timing of water deficit and nitrogen fertilization. Plant and Soil 157:197-206.
Sanyal, S.K., S. K. De Datta and P. Y. Chan. 1993. Phosphate sorption-desorption behavior of some acidic soils of south and southeast Asia. Soil Sci. Soc. Am. J. 57:937-945.
H. F. Schnier, S. K. De Datta, A. M. Fagi, M. Eaqub, Faruge Ahmed, R. Tejasarwana & A. Mazid. 1993. Yield response of wetland rice to band placement of urea solution in various soils in the tropics. Fertilizer Research 36:221-227.
De Datta, S. K., H. U. Neue, D. Senadhira and C. Quijano. 1993. pp. 248-268 In: Success in rice improvement for poor soils. Proceedings on a Workshop on adaptation of plants to soil stress, Aug. 1-4, 1993. INTSORMIL Pub. No. 94-2, University of Nebraska, Lincoln.
1994
Sharma, P. K. and S. K. De Datta. 1994. Rainwater utilization efficiency in rainfed lowland rice. Adv. in Agronomy 52:85-113.
De Datta, S. K. 1994. Sustainable management technologies in rice ecosystems. In: pp. 369-382. S. M. Virmani, J. C. Katyal, H. Eswaran, and I. P. Abrol (Eds.) Stressed ecosystems and sustainable agriculture. Oxford & IBH Publishing Co. New Delhi, Bombay, Calcutta.
Sharma, P. K., G. Pantuwan, K.T. Ingram, and S. K. De Datta. 1994. In: pp. 55-66. G. J. D. Kirk (Ed.) Rice roots: Nutrient and water use. Rainfed lowland rice roots: Soil and hydrological effects. IRRI. Philippines
1995
Cassman, K. G., S. K. De Datta, D. C. Olk, J. Alcantara, M. Samson, J. Descalsota, and M. Dizón. 1995. Yield decline and the nitrogen economy of long-term experiments on continuous, irrigated rice systems in the tropics. In: pp. 181-222. R. Lal and B. A. Stewart (eds.) Soil Management Experimental Basis for Sustainability and Environmental Quality. CRC Lewis Publishers. Boca Raton, London, Tokyo.
De Datta, S. K. 1995. Nitrogen transformations in wetland rice ecosystems. Fertilizer Research 42: 193-203.
De Datta, S. K. 1995. Plant nutrient balance sheets in lowland rice-based cropping systems. pp. 369-384. Integrated Plant Nutrition Systems. In: FAO Fertilizer and Plant Nutrition Bulletin 12. Rome, 1995.
1996
Senanyaka, N., R. E. Naylor, and S. K. De Datta. 1996. Effect of nitrogen fertilization on rice spikelet differentiation and survival. Journal of Agric. Sci. Cambridge 127: 303-309.
Cassman, K. G., S. K. De Datta, S. T. Amarante, S. P. Liboon, M. I. Samson, and M. A. Dizon. 1996. Long-term comparison of the agronomic efficiency and residual benefits of organic and inorganic nitrogen sources for tropical lowland rice. Exp. Agric. 32: 427-444.
Deka Medhi, B. and S. K. De Datta. 1996. Effect of CO2 and NH3 volatilization loss following incorporation of green manure and urea in lowland rice. Journal of Indian Soc. of Soil Sci. 44 (4): 768-771.
Biswas, T. K., S. K. De Datta, and N. N. Goswami. 1996. Fate and efficiency of 15N labelled Sesbania rostrata and urea in lowland rice. Journal of Indian Soc. of Soil Sci. 44(3): 531-533.
Deka Medhi, B. and S. K. De Datta. 1996. Nitrogen use efficiency and 15N balance following incorporation of green manure and urea in flooded transplanted and broadcast seeded rice. Journal of Indian Soc. of Soil Sci. 44 (3): 422-427
1997
Medhi, D. N. and S. K. De Datta. 1997. Residual effect of fertilizer phosphorus in lowland rice. Nutrient Cycling in Agroecosystems 46: 189-193.
Medhi, D. N. and S. K. De Datta. 1997. Phosphorus availability to irrigated lowland rice as affected by sources, application level and green manure. Nutrient Cycling in Agroecosystems 46: 195-203.
- II. SOIL AND CROP MANAGEMENT
1967
De Datta, S.K., R.S. Ayyangar, and J.T. Maghanua. 1967. Effects of lindane and carbaryl on insects, soil, and plant nitrogen and grain yield of rice. Expt. Agric. 3:239-247
1968
De Datta, S.K. and R. Barker. 1968. Economic analysis of experimental results in rice production. Paper presented in seminar workshop on economics of rice production, IRRI. December 1967. Phil. Econ. J. 7(20): 162-163.
De Datta, S.K. and V.P. Sharma. 1968. Rice cultural practices. a. Effects of varietal type, seasons and management level on the nitrogen response of indica rice. Pages 61-77. In Proc. and papers. Committee for the coordination of investigations of the Lower Mekong Basin. 4th Seminar on Economics and Social Studies (Rice Production). Los Banos, Laguna, Philippines.
De Datta, S.K. and A. Williams. 1968. Rice cultural practices. b. Effects of water management practices on the growth characteristics and grain yield of rice. Pages 78-93. In Proc. and papers. Committee for the coordination of investigations of the Lower Mekong Basin. 4th Seminar on Economics and Social Studies (Rice Production). Los Banos, Laguna, Philippines.
Moomaw, J.C. and S.K. De Datta. 1968. The response of high-yielding varieties to improved management practices. IRC-Working Party Meetings, Kandy, Ceylon. Sept. 2-14, 1968. IRC/pp-68/VIII/8.
1970
De Datta, S.K. 1970. The environment of rice production in tropical Asia. Pages 53-67. In Rice Production Manual (revised ed.). Chapter 6. University of the Philippine College of Agriculture and International Rice Research Institute, Los Banos, Laguna, Philippines.
De Datta, S.K., G. Levine, and A. Williams. 1970. Water management practices and irrigation requirements for rice. Part I. Water management practices for rice production. Pages 89-95. In Rice Production Manual (revised ed.). Chapter 11. University of the Philippines College of Agriculture and International Rice Research Institute, Los Banos, Laguna, Philippines.
De Datta, S.K. and P.M. Zarate. 1970. Environmental conditions affecting the growth characteristics, nitrogen response and grain yield of tropical rice. Proc. 5th Int. Biomet. Congr. , Montreux, Switzerland, 1969. Biometeorology 4(1): 71-89.
1971
Bhattacharyya, A.K. and S.K De Datta. 1971. Effects of soil temperature regimes on growth characteristics, nutrition, and grain yield of IR22 rice. Agron. J. 63(3): 443-449.
De Datta, S.K. and H.M. Beachell. 1971. Varietal response to some factors affecting production of upland rice. Pages 685-700. In Rice Breeding. Int. Rice Res. Ins. Los Banos, Philippines.
Gomez, K.A. and S.K. De Datta. 1971. Border effects in rice experimental plots. I. Unplanted borders. Expl. Agric. 7:87-92.
Krupp, H.K., S.K. De Datta, and S.N. Balaoing. 1971. The effects of water stress at different growth stages on lowland rice growth and yields. Pages 398-411. In Proc. Annual Crop Sci. Soc. Philipp., May 4-6, 1971.
1972
Gomez, K.A. and S.K. De Datta. 1972. Missing hills in rice experimental plots. Agron. J. 64(2): 163-164.
Krupp, H.K. and S.K De Datta. 1972. Some recent studies in Agronomy at IRRI. Inter. Conf. Tropical and Subtropical Agriculture. ASAE, Honolulu, Hawaii, April 11-13, 1972.
1973
De Datta, S.K. 1973. Principles and practices of rice cultivation under tropical conditions. ASPAC Food and Fertilizer Technology Center Extension Bull. No. 33, October, 1973. 26 p.
De Datta, S.K., W.P. Abilay, and G.N. Kalwar. 1973. Water stress effects in flooded tropical rice. Pages 19-36. In Water management in Philippine irrigation systems: research and operations. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
De Datta, S.K., H.K. Krupp, E.I. Alvarez, and S.C. Modgal. 1973. Water management practices in flooded tropical rice. Pages 1-18. In Water management in Philippine irrigation systems: research and operations. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
1974
De Datta, S.K. and W. P. Abilay, Jr. 1974. Varietal adaptation to water conditions in rainfed rice under different land management systems. Pages 129-136. In Proc. International seminar on deep water rice. Bangladesh Rice Res. Inst., Joydebpur. Aug. 21-26, 1974.
De Datta, S.K., E. L. Aragon, and J.A. Malabuyoc. 1974. Varietal differences in and cultural practices for upland rice. Rice breeding and varietal improvement seminar proceedings I:35-73. West Africa Dev. Assoc. (WARDA), Monrovia.
De Datta, S.K., F.G. Faye, and R.N. Mallick. 1974. Soil-water relations in upland rice. Pages 168-185. In Proc. Seminar on soil management in tropical rice. CIAT, Colombia. February 10-14, 1974.
Vergara, B.S., A. Mazaredo, and S.K. De Datta. 1974. Plant age internode elongation in floating rice varieties. Pages 178-183. In Proc. International seminar on deep water rice. Bangladesh Rice Res. Inst. Joydebpur, Aug. 21-26, 1974.
Vergara, B.S., A. Mazaredo, S.K. De Datta, W.P. Abilay, Jr., and C. Setabutara. 1974. Some plant characters associated with floating rice and their possible improvement for higher grain yields. Pages 102-108. In Proc. International seminar on deep water rice. Bangladesh Rice Res. Inst., Joydebpur, Aug. 21-26, 1974.
1975
Chang, T.T. and S.K. De Datta. 1975. Agronomic traits needed in upland rice varieties. Pages 93-100. In Major research in upland rice. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
Chang, T.T., S.K. De Datta, and W. R. Coffman. 1975. Breeding methods for upland rice. Pages 143-157. In Major research in upland rice. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
De Datta, S.K. 1975. Upland rice around the world. Pages 2-11. In Major research in upland rice. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
De Datta, S.K., T.T. Chang, and S. Yoshida. 1975. Drought tolerance in upland rice. Pages 101-116. In Major research in upland rice. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
De Datta, S.K. and B. S. Vergara. 1975. Climates of upland rice regions. Pages 14-26. In Major research in upland rice. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
Gomez, K. A. and S.K. De Datta. 1975. Influence of environment on protein of rice. Agron. J. 67:565-568.
O’Toole, J.C., T.T. Chang, S.K. De Datta, and S. Yoshida. 1975. Screening for drought response at IRRI. Pages 54-58. In Proc. Physiology program formulation workshop. Int.Inst. Trop. Agric., Ibadan, Nigeria. April 1975.
1976
De Datta, S.K. and J.A. Malabuyoc. 1976. Nitrogen response of lowland and upland rice in relation to tropical environmental conditions. Pages 509-539. In Proc. Symposium on Climate and rice. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
Pathak, M.D., S.H. Ou, and S.K. De Datta. 1976. Rice. Pages 131-143. In D.L. Gunn and J.G.R. Stevens (eds.). Pesticides and human welfare. Oxford Univ. Press.
Vergara, B.S., B. Jackson, and S.K. De Datta. 1976. Deep water rice and its response to deep water stress. Pages 301-319. In Proc. Climate and rice. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
1977
Alvarez, E.I. and S.K. De Datta. 1977. Automatic feedback control to maintain constant soil moisture tension in the study of drought tolerance in rice. Soil Sci. Soc. Am. J. 43(3):452-454.
Bahar, F. A. and S.K. De Datta. 1977. Prospects of increasing tropical rice production through ratooning. Agron. J. 69(4):536-540.
Barker, R., S.K. De Datta, K. A. Gomez, and R. W. Herdt. 1977. Rice in Philippine agriculture. Pages 121-156. In Constraints to high yields on Asian rice farms: An interim report. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
De Datta, S.K. and J.C. O’Toole. 1977. Screening deep water rices for drought tolerance. Pages 83-92. In Proc. Deep water rice workshop. International Rice Research Institute. Bangkok, Thailand. Nov. 8-10, 1976.
1978
De Datta, S.K. and R. Barker. 1978. Land preparation of rice soils. Pages 623-648. In International Rice Research Institute. Soils and rice. Los Banos, Laguna, Philippines.
De Datta, S.K., J.A. Malabuyoc, N. Supapoj, C. Prechachat, and B.R. Jackson. 1978. International cooperation to screen deepwater rice for drought tolerance at the seedling and early vegetative stages. Pages 277-289. In International Rice Research Institute. Proc. 1978 International deepwater rice workshop, Calcutta, India. Los Banos, Laguna, Philippines.
De Datta, S.K., K.A. Gomez, R.W. Herdt, and R. Barker. 1978. Methodology for an integrated experiment-survey on rice yield constraints. Int. Rice Res. Inst., Los Banos, Laguna, Philippines. 60 p.
De Datta, S.K., R.A. Morris, and R. Barker. 1978. Land preparation and crop establishment for rainfed lowland rice. IRRI Pap. Ser. 22. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
1979
De Datta, S.K., B.S. Cia, H.C. Jereza, and P.B. Masicat. 1979. Constraints to high rice yields, Iloilo, Philippines. Pages 265-286. In Farm-level constraints to high rice yields in Asia: 1974-77. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
De Datta, S.K., F.V. Garcia, W.P. Abilay, Jr., J.M. Alcantara, A. Mandac, and V.P. Marciano. 1979. Constraints to high rice yields, Nueva Ecija, Philippines. Pages 191-234. In Farm-level constraints to high rice yields in Asia: 1974-77. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
De Datta, S.K., F.V. Garcia, A.K. Chatterjee, W.P. Abilay, Jr., J.M. Alcantara, B.S. Cia, and H.C. Jereza. 1979. Biological constraints to farmers’ rice yields in three Philippine provinces. IRRI Pap. Ser. 30. Int. Rice Res. Inst., Los Banos, Laguna, Philippines. 69 p.
De Datta, S.K., A.K. Chatterjee, B.S. Cia, and P. B. Masicat. 1979. Constraints to high rice yields, Bicol, Philippines. Pages 235-263. In Farm-level constraints to high rice yields in Asia: 1974-77. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
Evans, L.T. and S.K. De Datta. 1979. The relation between irradiance and grain yield of irrigated rice in the tropics, as influenced by cultivar, nitrogen fertilizer application and month of planting. Field Crops Res. 2(1):1-17.
Gomez, K.A., R. W. Herdt, R. Barker, and S.K. De Datta. 1979. A methodology for identifying constraints to high rice yields on farmers’ fields. Pages 27-47. In Farm-level constraints to high rice yields in Asia: 1974-77. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
Mikkelsen, D.S. and S.K. De Datta. 1979. Rice culture. Pages 147-234. In B.S. Luh (ed). Rice production and utilization. Avi Publ. Co., Westport, Conn.
1980
De Datta, S.K., E.L. Aragon, and P.G. Vicencio. 1980. Drought problems in rainfed lowland rice areas and varietal development. Pages 69-83. In Proc. International seminar on photoperiod-sensitive transplant rice. 24-28 October 1977. Bangladesh Rice Res. Inst., Dacca, Bangladesh.
Sompaew, V. and S.K. De Datta. 1980. Stand establishment techniques and management practices for direct-seeded rice. Philipp. J. Crop Sci. 5(3):112-116.
Malabuyoc, J.A., E.L. Aragon, and S.K. De Datta. 1980. Response of dryland rices to applied nitrogen and seeding dates. Philipp. J. Crop Sci. 5(4):134-139.
1981
De Datta, S.K. and R.L. Cowell. 1981. The communication of scientific information in international agricultural development. Pages 3-11. In Proc. VI World Congress of the International Association of Agricultural Librarians and Documentalists, “Agricultural information to hasten development”, 3-7 March, Manila, Philippines.
1982
Supapoj, N., C. Boonwite, J.C. O’Toole, S.K. De Datta and B.R. Jackson. 1982. Screening of deepwater rices for drought tolerance in Thailand. Pages 215-221. In Proc. 1981 Int. Deepwater Rice Workshop. Int. Rice Res. Inst., Los Banos, Philippines.
De Datta, S.K., J.A. Malabuyoc, and E.L. Aragon. 1982. Evaluation of rices for drought tolerance for deepwater areas. In Proc. 1981 Int. Deepwater Rice Workshop. Int. Rice Res. Inst., Los Banos, Philippines.
Flinn, J.C., S.K. De Datta and E. Labadan. 1982. An analysis of long-term rice yields in a wetland soil. Field Crops Res. 5:201-216.
Garcia, F.V., W.P. Abilay, Jr., J. M. Alcantara and S.K. De Datta. 1982. Yield response of wetland rice to various fertilizer management practices and to other inputs in farmers’ fields in the Philippines. Philippine J. Crop Sci. 7(1):51-58.
De Datta, S.K. and D.V. Seshu. 1982. Evaluating rices for drought tolerance using field screening and multilocation testing. Pages 245-263. Drought tolerance in crops with emphasis on rice. Int. Rice Res. Inst., Los Banos, Laguna, Philippines.
1983
De Datta, S.K. 1983. Promising research results relevant to increased production in irrigated rice. In Proc. Third National Rice Institute Conf. Cairo, Egypt, 21-24 February 1983.
1984
Flinn, J.C. and S.K. De Datta. 1984. Trends in irrigated-rice yields under intensive cropping at Philippine Research stations. Field Crops Research 9:1-15.
Abilay, W.P., Jr., F.V. Garcia, J.M. Alcantara, and S.K. De Datta. 1984. Changes in input use and grain yields in lowland rice farms in three Philippine provinces. IRRI Res. Paper Series No. 100. 13 p.
Alcantara, J.M. F.V. Garcia. W. P. Abilay, Jr., and S.K. De Datta. 1984. Identification of farm-level constraints in rainfed rice areas in two provinces in the Philippines. Philipp. J. Crop Sci. 9(1):13-23.
De Datta, S.K. 1984. Strategies for improving rice production in eastern India. Outlook on Agriculture 13(4):185-194.
De Datta, S.K. 1984. Crop establishment techniques and cultural practices for upland rice. Pages 357-378. An overview of upland rice research. Proc. 1982 Bouake, Ivory Coast, Upland Rice Workshop. Int. Rice Res. Inst., Los Banos, Philippines.
1985
Malabuyoc, J.A., E.L. Aragon, and S.K. De Datta. 1985. Recovery from drought-induced desiccation at the vegetative growth stage in direct-seeded rainfed rice. Field Crops Res. 10:105-112.
De Datta, S.K. 1985. Fertilizer application and weed control technology for rice in a resource-scarce Philippine farmers situation. Monitor 13(8):2-5. Philippine Council for Agriculture and Resources Research and Development, Los Banos, Philippines.
1986
Mabbayad, B.B. and S.K. De Datta. 1986. Prosperity through rice. A strategy to improve income and employment potential for rice-based farming systems. Pages 251-255. In Rice progress assessment and orientation in the 1980’s. Proc. 16th session of the International Rice Commission, 10-14 June 1985, Los Banos, Philippines.
Gupta, P.C., J.C. O’Toole, and S.K. De Datta. 1986. Training in upland rice. Pages 547-557. In Progress in Upland Rice Research. Int. Rice Res. Inst., Los Banos, Philippines.
De Datta, S.K. 1986. Technology development and spread of direct-seeded flooded rice in Southeast Asia. Experimental Agriculture. 22:417-426.
Cruz, R.T., J.C. O’Toole, M. Dingkuhn, E.B. Yambao, M. Thangaraj, and S.K. De Datta. 1986. Shoot and root responses to water deficits in rainfed lowland rice. Aust. J. Plant Physiol. 13:567-575.
S.K. De Datta. 1986. Fertilizer management and other cultural practices for rainfed lowland rice in South and Southeast Asia. Pages 347-378. In Proc. Second IMPHOS (World Phosphate Institute) regional seminar on crop production techniques and fertilizer management in rainfed agriculture in Southern Asia, Jan 22-25, 1986, New Delhi, India.
O’Toole, J.C. and S.K. De Datta. 1986. Drought resistance in rainfed lowland rice. Pages 145-158. In Proc. Int. Conf. on Progress in rainfed lowland rice, Bhubaneswar, India, 15-20 October 1984. Int. Rice Res. Inst., Los Banos, Philippines.
1987
Tanguilig, V.C., E.B. Yambao, J.C. O’Toole, and S.K. De Datta. 1987. Water stress effects on leaf elongation, leaf water potential, transpiration, and nutrient uptake of rice, maize, and soybean. Plant and Soil 103:155-168.
Aragon, E.L., S.K. De Datta, R.J. Buresh, and R.C. Evangelista. 1987. Increased lowland rice yield through improved fertilizer and water management practices. Philipp. J. Crop Sci. 12(3):151-161.
Calendacion, A.N. and S.K. De Datta. 1987. Profitable cropping patterns for irrigated and rainfed lowland rice environments. Philipp. J. Crop Sci. 12(3):169-179.
1988
Self, L.S. and S.K. De Datta. 1988. The impact of water management practices in rice on mosquito vector propagation. Pages 67-83. In Vector-borne Disease Control in Humans through Rice Agroecosystem Management. Int. Rice Res. Inst., Los Banos, Philippines.
De Datta, S.K., J.A. Malabuyoc and E.L. Aragon. 1988. A field screening technique for evaluating rice germplasm for drought tolerance during the vegetative stage. Field Crops Res. 19:123-134.
De Datta, S.K., J.A. Malabuyoc, P.C. Bernasor, W.P. Abilay,Jr., W.N. Obcemea, T.R. Migo and M.A. Llagas. 1988. Upland rice: Varietal performance, yield constraints, weed control and other technology. Philipp. J. Crop Sci. 13(1):51-60.
De Datta, S.K. 1988. International technology exchange activities at IRRI. Pages 73-92. In Proceedings on Agriculture and Life Sciences in China-International Agricultural Technology Exchange, Vol. V. Institute of International Development and Education in Agriculture and Life Sciences (IDEALS), Beltsville, MD, U.S.A.
De Datta, S.K. and J.A. Malabuyoc. 1988. Drought tolerance screening for deepwater rice. Pages 199-208. In Proceedings of the 1987 Deepwater rice workshop, 26-30 October 1987, Thailand. Int. Rice Res. Inst., Philippines.
1989
Ekanayake, I.J. S.K. De Datta, and P.L. Steponkus. 1989. Spikelet sterility and flowering response of rice to water stress at anthesis. Annals of Botany 63:257-264.
Dingkuhn, M., S.K. De Datta, K. Dörffling, and C. Javellana. 1989. Varietal differences in leaf water potential, leaf net CO2 assimilation, conductivity, and water loss efficiency in upland rice. Aust. J. Agric. Res. 40:1183-1192.
1990
Ekanayake, I.J. P.L. Steponkus, and S.K. De Datta. 1990. Sensitivity of pollination to water deficits at anthesis in upland rice. Crop Sci. 30:310-315.
Schnier, H.F., M. Dingkuhn, S.K. De Datta, K. Mengel, E. Wijangco, and C. Javellana. 1990. Nitrogen economy and canopy carbon dioxide assimilation of tropical lowland rice. Agron. J. 82:451-459.
Schnier, H.F., M. Dingkuhn, S.K. De Datta, K. Mengel, and J.E. Faronilo. 1990. Nitrogen fertilization of direct-seeded flooded vs. transplanted rice. I. Nitrogen uptake, photosynthesis, growth and yield. Crop Sci. 30:1276-1284.
Dingkuhn, M., H.F. Schnier, S.K. De Datta, E. Wijangco and K. Dörffling. 1990. Diurnal and developmental changes in canopy gas exchange in relation to growth in transplanted and direct seeded flooded rice. Aust. J. Plant Physiol. 17:119-134.
Dingkuhn, M., H.F. Schnier, S.K. De Datta, K. Dörffling, C. Javellana, and R. Pamplona. 1990. Nitrogen fertilization of direct-seeded flooded vs. transplanted rice. II. Interactions among canopy properties. Crop Sci. 30:1284-1292.
De Datta, S.K. and F.E. Broadbent. 1990. Nitrogen use efficiency of 24 rice genotypes on an N-deficient soil. Field Crops Res. 23:81-92.
Thangaraj, M., J.C. O’Toole, and S.K. De Datta. 1990. Root response to water stress in rainfed lowland rice. Exp. Agric. 26:287-296.
1991
Dingkuhn, M, H.F. Schnier, S.K. De Datta, K. Dörffling, and C. Javellana. 1991. Relationships between ripening phase productivity and crop duration, canopy photosynthesis, and senescence in transplanted and direct seeded lowland rice. Field Crops Res. 26:327-345.
Dingkuhn, M., G. Farquar, S.K. De Datta, and J.C. O’Toole. 1991. Discrimination of C-13 among upland rices having different water use efficiencies. Aust. J. Agric. Res. 49:1123-1133.
Senanayake, N., S.K. De Datta, R.E.L. Naylor and W.J. Thompson. 1991. Apical development of lowland rice: Identification of growth stages and differences in apical development of two rice cultivars using electron microscopy. Agron. J. 83:1013-1023.
Migo, T.R., R.R. Pamplona, M. Dingkuhn and S.K. De Datta. 1991. Interaction of water stress and nitrogen supply on the photosynthetic parameters of two upland rices and two upland weeds. Philipp. J. Weed Sci. 18:69-89
Ekanayake, I.J., S.K. De Datta, and P.L. Steponkus. 1991. Influence of panicle development stage and genotype variability on epidermal silification of rice glumes. SABRAO J. 23(1):49-59.
De Datta, S.K. and P. Nantasomsaran. 1991. Status and prospects of direct-seeded flooded rice in tropical Asia. 1990 Int. Rice Res. Conf., Int. Rice Res. Instit., 27-31 August 1991. Seoul, Korea. p.1-16.
1992
Dingkuhn, M., H. F. Schnier, C. Javellana, R. Pamplona, and S. K. De Datta. 1992. Effect of late season nitrogen application on canopy photosynthesis and yield of transplanted and direct seeded tropical lowland rice. I. Growth and yield components. Field Crops Research 28:223-234.
Dingkuhn, M., H. F. Schnier, C. Javellana, R. Pamplona, and S. K. De Datta. 1992. Effect of late season nitrogen application on canopy photosynthesis and yield of transplanted and direct seeded tropical lowland rice. II. Canopy stratification at flowering stage. Field Crops Research 28:235-249.
1993
Malabuyoc, J. A., J. G. Real and S. K. De Datta. 1993. Grain yield as a function of rainfall, soil moisture and solar radiation in upland rice (Oryza sativa L.). Field Crops Research 34:37-45
Ekanayake, I.J., S. K. De Datta and P. L. Steponkus. 1993. Effect of water deficit stress on diffusive resistance, transpiration, and spikelet desiccation of rice (Oryza sativa L.). Annals of Botany 72: 73-80
S. K. De Datta and F. E. Broadbent. 1993. Developmental changes related to nitrogen use efficiency in rice. Field Crops Research 34:47-56
1994
Senanayake, N., R. E. L. Naylor, S. K. De Datta and W. J. Thomson. 1994. Variation in development of contrasting rice cultivars. Journal of Agricultural Science, Cambridge. 123:35-39.
1996
Vergara, B.S. and S. K. De Datta. 1996. Oryza sativa L.: G. J. H. Grubben and Soetjipto Partohardjono (Eds.). pp. 106-115. In: Plant Resources of South-East Asia: 10 Cereals, PROSEA. Backhuys Publishers, Leiden, 1996.
- III. WEED SCIENCE
1968
De Datta, S.K., J.K. Park and J.E. Hawes. 1968. Granular herbicides for controlling grasses and other weeds in transplanted rice. Paper presented at the Weed Sci. Soc. Philipp. IRC Newsl. 17(4):21-29.
Floresca, E.T., J.C. Moomaw, and S.K. De Datta. 1968. Weed control and other cultural practices in soybean grown in Maahas clay. Pages 39-69. In Proc. Weed Sci. Soc. Philipp. Los Banos, Laguna, Philippines.
Moomaw, J.C., S.K. De Datta, D.E. Seaman, and P. Yogaratnam. 1968. New directions in weed control research for tropical rice. Proc. 9th British Weed Control Conference, Brighton, U.K. 2:675-681.
Sagaral, E.G., J.C. Moomaw, and S.K. De Datta. 1968. Chemical weed control in mechanized drill-seeded flooded rice. Pages 26-34. In Proc. Weed Sci. Soc. Philipp. Los Banos, Laguna, Philippines.
Seaman, D.E. and S.K. De Datta. 1968. Chemical weed control in tropical rice. Pages 50-60. In Proc. and papers. Committee for the coordination of investigations of the Lower Mekong Basin. 4th Seminar on Economics and Social Studies (Rice Production). Los Banos, Laguna, Philippines.
1969
De Datta, S.K., R.T. Bantilan and J.K. Park. 1969. Selective control of annual grassy weeds in transplanted tropical rice with alpha-2,2,2-triclorethyl styrene. Nature 221(5175):64-65.
De Datta, S.K., and R.Q. Lacsina. 1969. Promising new herbicides for transplanted tropical rice. Pages 112-128. In Proc. 2nd Asian-Pacific Weed Interchange, Philippines.
De Datta, S.K., J.C. Moomaw, and R.T. Bantilan. 1969. Effects of varietal type, methods of planting and nitrogen levels on competition between rice and weeds. Pages 152-163. In Proc. 2nd Asian-Pacific Weed Interchange, Philippines.
1970
De Datta, S.K., R.Q. Lacsina, and Ch. M. Ahmad. 1970. Water management for granular herbicides in transplanted rice. IRC Newsl. 19(3):3-10.
1971
De Datta, S.K. and P.C. Bernasor. 1971. Selectivity of some new herbicides for direct-seeded flooded rice in the tropics. Weed Res. 11(1):41-46.
De Datta, S.K., R.Q. Lacsina, and D.E. Seaman. 1971. Phenoxy acid herbicides for barnyard grass control in transplanted rice. Weed Sci. 19(3):203-206.
1972
Chang, W.L. and S.K. De Datta. 1972. Control of weeds in transplanted rice in Taiwan as affected by various rates and times of applying benthiocarb and butachlor. IRC News. 21(1):8-16.
De Datta, S.K. 1972. Chemical weed control in tropical rice in Asia. PANS 18(4):433-440.
De Datta, S.K. and R.Q. Lacsina. 1972. Weed control in flooded rice in tropical Asia. Pages 472-478. In Proc. 11th Br. Weed Contr. Conf.
1973
De Datta, S.K. and P.C. Bernasor. 1973. Chemical weed control in broadcast-seeded flooded tropical rice. Weed Res. 13:351-354.
Ghosh, A.K., D.K. Kim and S.K. De Datta. 1973. Germination, growth rate, and control of perennial sedge Scirpus maritimus in tropical rice. Proc. 3rd Asian-Pacific Weed Control Interchange. 2:249-256. Malaysia, June 7-12, 1971.
1974
Chang, W.L and S.K. De Datta. 1974. Chemical weed control in direct-seeded flooded rice in Tawain. PANS 20(4):425-428.
De Datta, S.K. 1974. Weed control in rice: present status and future challenge. Philipp. Weed Sci. Bull. 1(1):1-16.
De Datta, S.K. and R.Q. Lacsina. 1974. Herbicides for the control of perennial sedge Scirpus maritimus L. in flooded tropical rice. PANS 20(1):68-75.
Kim, K.U. and S.K. De Datta. 1974. An approach to eradicate Scirpus maritimus in flooded rice. Philipp. Weed Sci. Bull. 1(2):1-13.
Okafor, L.I. and S.K. De Datta. 1974. Competition between weeds and upland rice in monsoon Asia. Philipp. Weed Sci. Bull. 1(1):39-45.
1975
De Datta, S.K. and R. Barker. 1975. Economic evaluation of modern weed control techniques in rice. Pages 205-228. In F.D. Fryer and S. Matsunaka, eds. Integrated control of weeds. Univ. of Tokyo Press, Japan.
Lacsina, R.Q. and S.K. De Datta. 1975. Integrated weed management practices for controlling a difficult weed in lowland rice. Philipp. Weed Sci. Bull. 2(1&2):1-10.
1976
Okafor, L.I. and S.K. De Datta. 1976. Competition between upland rice and purple nutsedge for nitrogen, moisture, and light. Weed Sci. 24(1):43-46.
De Datta, S.K. and H. C. Jereza. 1976. The use of cropping systems and land and water management to shift weed species. Philipp. J. Crop. Sci. 1(4):173-178.
Okafor, L.I. and S.K. De Datta. 1976. Chemical control of perennial nutsedge (Cyperus rotundus L.) in tropical upland rice. Weed Res. 16:1-5.
1977
De Datta, S.K. 1977. Approaches in the control and management of perennial weeds in rice. Proc. 6th Asian-Pacific Weed Sci. Soc. Conf. Jakarta, Indonesia. 1:205-226.
De Datta, S.K. 1977. Weed control and soil and crop management in rainfed rice at IRRI and other locations in tropical Asia. Pages 201-211. In I.W. Buddenhagen and G.J. Persley (eds). Proc. Rice in Africa. Int. Inst. Trop. Agric., Ibadan, Nigeria. Academic Press, London.
De Datta, S.K. 1977. Weed control in rice in Southeast Asia: methods and trends. Philipp. Weed Sci. Bull. 4:39-65.
1979
De Datta, S.K., F.R. Bolton, and W.L. Lin. 1979. Prospects for using minimum and zero tillage in tropical lowland rice. Weed Res. 19:9-15.
De Datta, S.K. 1979. Weed problems and methods of control in tropical rice. Pages 9-44. In K. Moody (ed). Weed control in tropical crops. Weed Sci. Soc. Philipp., Los Banos, Philippines.
1980
De Datta, S.K. and P.C. Bernasor. 1980. Weed control in rainfed transplant rice. Pages 142-149. In Proc. International seminar on photoperiod-sensitive transplant rice. 24-28 October 1977. Bangladesh Rice Res. Inst., Dacca, Bangladesh.
De Datta, S.K. 1980. Weed control in rice in South and Southeast Asia. ASPAC Food & Fertilizer Center Ext. Bull. No. 156, Dec. 1980. 24 p.
Moody, K. and S.K. De Datta. 1980. Economics of weed control in tropical and sub-tropical rice growing regions with emphasis on reduced tillage. Pages 931-940. In Proc. 1980 British Crop Protection Conference- Weeds, Nov. 17-21, Brighton, England.
Lopez, L.M., S.K. De Datta, and B.B. Mabbayad. 1980. Integrated weed control methods in upland rice (Oryza sativa L.). Philipp. J. Weed Sci. 7:45-56.
1981
De Datta, S.K. and P. C. Bernasor. 1981. Integrated control of perennial weed S. maritimus L. in wetland rice. Proc. 8th Asian-Pac. Weed Sci. Soc. Conf., Nov 23-27, 1981, Bangalore, India.
De Datta, S.K. 1981. Weed control in rice in South and Southeast Asia. Pages 1-24. In ASPAC-FFTC Book Series No. 20. Weeds and weed control in Asia. Taiwan, Rep. of China.
1982
De Datta, S.K. and M. Zahidul Hoque. 1982. Weeds, weed problems, and weed control in deepwater rice areas. Pages 427-442. In Proc. 1981 Int. Deepwater Rice Workshop. Int. Rice Res. Inst., Los Banos, Philippines.
Migo, T.R. and S.K. De Datta. 1982. Effect of cultivar, seedling age, and nitrogen application method on weed population and grain yield in transplanted rice (Oryza sativa). Philipp. J. Weed Sci. 9:72-86.
Moody, K. and S.K. De Datta. 1982. Integration of weed control practices for rice in tropical Asia. Pages 37-47. In M. Soerjani, D.E. Barnes, and T.O. Robson (eds). Weed control in small farms. Asian- Pacific Weed Sci. Soc. BIOTROP Spec. Publ. No 15, Bogor, Indonesia.
1983
De Datta, S.K. and R.W. Herdt. 1983. Alternative technology and economic assessment of weed control in wetland rice. Pages 359-365. Vol. 2. Natural products. In Pesticide Chemistry: Human Welfare and the Environment. Pergamon Press, England.
De Datta, S.K. and R. W. Herdt. 1983. Weed control technology in irrigated rice. Pages 89-108. Weed control in rice. Int. Rice. Res. Inst., Los Banos, Philippines.
De Datta, S.K. 1983. Perennial weeds and their control in rice in the tropics. Pages 255-272. Weed control in rice. Int. Rice Res. Inst., Los Banos, Philippines.
Bernasor, P.C. and S.K. De Datta. 1983. Integration of cultural management and chemical control of weeds in broadcast-seeded flooded rice. Pages 137-155. Proc. 9th Conf. Asian-Pacific Weed Science Society, 28 November-2 December 1983, Manila Philippines.
Migo, T.R. and S.K. De Datta. 1983. Improvement in herbicide application technique and application timing in transplanted and broadcast-seeded flooded rice. Pages 162-175. Proc. 9th Conf. Asian-Pacific Weed Science Society, 28 November – 2 December 1983, Manila Philippines.
De Datta, S.K. and M.A. Llagas. 1983. Prospect for reduced tillage techniques in rice and rice-based cropping systems. Pages 41-59. Proc. 9th Asian-Pacific Weed Science Society, 28 November – 2 December 1983, Manila, Philippines.
1984
De Datta, S.K. and M.A. Llagas. 1984. Weed problems and weed control in upland rice in tropical Asia. Pages 321-341. An overview of upland rice research. Proc. 1982 Bouake, Ivory Coast, Upland Rice Workshop. Int. Rice Res. Inst., Los Banos, Philippines.
Migo, T.R. and S.K. De Datta. 1984. Chemical control of Rottboellia exaltata in upland rice (Oryza sativa). Philipp. J. Weed Sci. 11:83-93.
1985
Sankaran, S. and S.K. De Datta. 1985. Weeds and weed management in upland rice. Adv. Agron. 38:283-337.
Llagas, M.A., B.L. Mercado, and S.K. De Datta. 1985. Reduced volume application of 2,4-D using controlled drop applicators in rainfed rice (0ryza sativa). Philipp. J. Weed Sci. 12:28-43.
1986
Shad, R.A. and S.K. De Datta. 1986. Reduced tillage techniques for wetland rice as affected by herbicides. Soil & Tillage Res. 6:291-303.
De Datta, S.K., K. Moody, and S. Sankaran. 1986. Integrated weed management practices for upland rice. Pages 447-460. In Progress in upland rice research. Int. Rice Res. Inst., Los Banos, Philippines.
Bernasor, P.C. and S.K. De Datta. 1986. Chemical and cultural control of bulrush (Scirpus maritimus L.) and annual weeds in lowland rice (Oryza sativa L.). Weed Res. 26(4): 233-244.
Migo, T.R., B.L. Mercado, and S.K. De Datta. 1986. Response of Sphenoclea zeylanica to 2,4-D and other recommended herbicides for weed control in lowland rice. Philipp. J. Weed Sci. 13:28-38.
De Datta, S.K. and J. C. Flinn. 1986. Technology and economics of weed control in broadcast-seeded flooded tropical rice. Pages 51-74. In Weeds and the environment in the tropics. Proc. 10th Asian-Pacific Weed Science Society Conference, Nov 24-30, 1985, Chiangmai, Thailand.
Moody, K., S.K. De Datta, V.M. Bhan and G.B. Manna. 1986. Weed control in rainfed lowland rice. Pages 359-370. In Proc. Int. Conf. on Progress in rainfed lowland rice, Bhubaneswar, India, 15-20 October 1984. Int. Rice Res. Inst., Los Banos, Philippines.
Shad, R.A. and S.K. De Datta. 1986. Evaluation of methods of crop establishment in wetland rice. Pakistan J. Agric. Res. 7(3):186-192.
1987
Baltazar, A.M., S.K. De Datta, and M.A. Llagas. 1987. Activity, absorption and translocation of fluazifop-butyl in upland rice (Oryza sativa) and in three grass weeds. Pages 423-435. In Proc. 11th Asian-Pacific Weed Science Society Conference, Nov 29-Dec 5, 1987, Taipei, Republic of China.
De Datta, S.K. 1987. Weed management systems with emphasis on low input technology. Pages 180-186. In Proc. 11th International Congress of Plant Protection, 5-9 October 1987, Manila, Philippines.
1988
Bernasor, P.C. and S.K. De Datta. 1988. Long-term effects of tillage, cultivar and herbicide on weed shift and control in broadcast-seeded flooded rice. Soil & Tillage Research 12(3):197-212.
De Datta, S.K. and K. Ampong-Nyarko. 1988. Cost-effective integrated weed management practices for irrigated rice. Pages 27-38. In Proceedings of the 19th anniversary and annual convention of the Pest Control Council of the Philippines, Sacred Heart Center, Cebu City, May 3-7, 1988.
De Datta, S.K. 1988. Overview of rice weed management in tropical rice. Pages 1-24. In Proceedings of the National seminar and workshop on rice field weed management, Penang, Malaysia, June 7-9, 1988.
De Datta, S.K. 1988. Progress in weed science and control technology in tropical rice. Pages 14-35. In Proceedings 2, Weed Problems and Weed Management in South and Southeast Asia. Proceedings 2 of the Second Tropical Weed Science Conference, 6-10 December 1988, Phuket, Thailand.
1989
Ampong-Nyarko, K. and S.K. De Datta. 1989. Ecophysiological studies in relation to weed management strategies in rice. Pages 31-45. In Proceedings of the 12th Asian-Pacific Weed Science Society Conference (Vol. I), Seoul, Korea, Aug. 21-26, 1989.
De Datta, S.K., P.C. Bernasor, T.R. Migo, M.A. Llagas, and P. Nantasomsaran. 1989. Emerging weed control technology for broadcast seeded rice. Pages 133-146 in Progress in irrigated rice research. International Rice Research Institute, P.O.Box 933, Manila, Philippines.
Pathak, A.K., S. Sankaran, and S.K. De Datta. 1989. Effects of herbicide and moisture levels on Rottboellia cochinchinensis and Cyperus rotundus in upland rice. Tropical Pest Management 25(3):311-315.
De Datta, S.K. 1989. Technology and economics of weed control in small rice farms in the Asian tropics. Pages 23-37 in Proc. 12th Asian-Pacific Weed Science Society Conference. Seoul, Korea, August 21-26, 1989.
1990
Kim, S.Y., S.K. De Datta, and B.L. Mercado. 1990. The effect of chemical and heat treatments on germination of Commelina benghalensis L. aerial seeds. Weed Res. 30:109-116.
Hill, J.E., S.K. De Datta, and J.G. Real. 1990. Echinochloa competition in rice: A comparison of studies from direct-seeded and transplanted flooded rice. In Auld, B.A., R.C. Umaly, and Sitti, Soetarmi Tjitrosomo, eds. Proceedings of the Symposium on Weed Management. BIOTROP Spec. Pub. No. 38. Bogor, Indonesia, 7-9 June 1989. SEAMEO-BIOTROP, P.O. Box 17, Bogor, Indonesia.
Mercado, B.L., S.K. De Datta, T.R. Migo, and A.M. Baltazar. 1990. Growth behavior and leaf morphology of Philippine strains of Sphenoclea zeylanica showing differential response to 2,4-D. Weed Res. 30:245-250.
1991
Migo, T. R., R. R. Pamplona, M. Dingkuhn and S. K. De Datta. 1991. Interaction of water stress and nitrogen supply on the photosynthetic parameters of two upland rices and two upland weeds. Philipp. J. Weed Sci. 18:69-89
De Datta, S. K. 1991. Strategic weed research for relevant weed science technology. Pp. 277-286. In: Proc. 3Rd Tropical Weed Science Society Conference. Kuala Lumpur, Malaysia. December 4-6, 1990.
1992
A. M. Baltazar and S. K. De Datta. 1992. Weed management in rice. Weed Abstracts, CAB International 42 (11):495-508.
Ampong-Nyarko, K., S. K. De Datta and M. Dingkuhn. 1992. Physiological response of rice and weeds to low light intensity at different growth stages. Weed Res. 32 (6):465-472.
1993
75. Ampong-Nyarko, K. and S.K. De Datta. 1993. Effect of light and nitrogen and their interaction on the dynamics of rice-weed competition. Weed Res. 33:1-8.
76. Kim, S.Y. and S.K. De Datta. 1993. Ultrastructure of seed coat and its relation to the germination of Commelina benghalensis L. seeds. Philipp. J. Weed Science 20:1-7.
77. Kim, S.Y. and S. K. De Datta. 1993. Effect of nitrogen fertilizer, shading and photoperiod on the growth and seed production of Commelina benghalensis L. Philipp. J. Weed Science 20:8-14.
78. Bernasor, P.C. and S.K. De Datta. 1993. Timing of nitrogen application for weed control in broadcast seeded flooded rice. Philipp. J. Weed Science 20:15-30.
79. Baltazar, A.M., S.K. De Datta and M.A. Llagas. 1993. Activity and behavior of fluazifop-butyl at three and seven leaf stages of rice (Oryza sativa L.) and of three grass weeds. Philipp. J. Weed Science 20:31-44.
80. Baltazar, A.M., S.K. De Datta and M.A. Llagas. 1993. Efficacy and selectivity of fenoxaprop for postemergence grass control in rice (Oryza sativa L.). Philipp. J. Weed Science 20:45-55.
1994
Kim, S.Y., S. K. De Datta, R. P. Robles, K. U. Kim, S. C. Lee and D. H. Shin. 1994. 3. Partial Characterization of Allelopathic Substances in Sorghum Stem by Different Organic Solvents and pH. The Korean Journal of Weed Science 14 (1): 42-48.
Kim, S. Y., S. K. De Datta, R. P. Robles, K. U. Kim, S.C. Lee and D. H. Shin. 1994. 6. Isolation and Characterization of Allelopathic Substances from Sorghum Stem. The Korean Journal of Weed Science 14 (2): 156-162.
1995
De Datta, S. K. 1995. Weed management perspectives for sustainable agriculture in rice-based systems. pp. 17-27. In: Proceedings I (A). 15th Asian-Pacific Weed Science Society Conference. Tsukuba, Japan. July 24-28, 1995.
1996
De Datta, S. K. and A. M. Baltazar. 1996. Weed control technology as a component of rice production systems. pp. 27-52. In: B. A. Auld and K. U. Kim (Eds.). Weed Management in Rice. FAO Plant Production and Plant Protection Paper 139. Rome, Italy.
De Datta, S. K. and A. M. Baltazar. 1996. Integrated weed management in rice in Asia. Pages 145-165 in Naylor, R., ed. Herbicides in Asian rice: transitions in weed management. Palo Alto (California): Institute for International Studies, Stanford University and Manila (Philippines): International Rice Research Institute. 270 p.
1997
Baltazar, A.M., E.C. Martin, M.C. Casimero, F.V. Bariuan, S.R. Obien, and S.K. De Datta. 1997. Weed management in rice-onion systems. Progress in IPM-CRSP Research: Proceedings of the Second IPM-CRSP Symposium. Guatemala City, Guatemala. May 16-20, 1997. pp. 95-104.
Baltazar, A.M., E.C. Martin, M.C. Casimero, F.V. Bariuan, S.R. Obien, and S.K. De Datta. 1997. Characterization of purple nutsedge in rainfed rice-onion systems. Proceedings of the 16th Asian-Pacific Weed Science Society Conference. Kuala Lumpur, Malaysia. September 8-12, 1997. pp. 326-329.
1998
Baltazar, A.M., E.C. Martin, M.C. Casimero, F.V. Bariuan, S.R. Obien and S.K. De Datta. 1998. Major weeds in rainfed rice-onion cropping systems in the Asian site in the Philippines. IPM-CRSP Working Paper No. 98-1. VPISU, Blacksburg, VA, USA. 22 pp.
Baltazar, A.M., E.C. Martin, M.C. Casimero, F.V. Bariuan, S.R. Obien and S.K. De Datta. 1998. Major weeds and their management in rainfed rice-onion cropping systems in the IPM-CRSP Asian site in the Philippines. Progress in IPM-CRSP Research: Proceedings of the Third IPM-CRSP Symposium. VPISU, Blacksburg, VA. May 15-18, 1998. pp. 57-72.
1999
Baltazar, A.M., E.C. Martin, M.C. Casimero, F.V. Bariuan, S.R. Obien and S.K. De Datta. 1999. Major weeds and dominance patterns in rainfed rice-onion cropping systems. The Philippine Agricultural Scientist 82(2): 167 – 178.
Baltazar, A.M., E.C. Martin, M.C. Casimero, F.V. Bariuan, S.R. Obien and S.K. De Datta. 1999. Agroecological approaches to managing weeds in rainfed rice-onion cropping systems. Philippine Agricultural Scientist. In Review.
Baltazar, A.M., E.C. Martin, M.C. Casimero, F.V. Bariuan, S.R. Obien, S.K. De Datta. 1999. Major weeds and dominance patterns in rainfed rice-onion cropping systems. The Philippine Agricultural Scientist 82(2):167-178.
Baltazar, A.M., E.C. Martin, M.C. Casimero, F.V. Bariuan, S.R. Obien, S.K. De Datta. 1999. A survey of weeds in rainfed rice-onion cropping systems in Central Luzon, Philippines. Proceedings of the 17th conference of the Asian-Pacific Weed Science Society. Bangkok, Thailand. November 22-27, 1999. pp. 65-70.
Baltazar, A.M., E.C. Martin, M.C. Casimero, F.V. Bariuan, S. R. Obien, S.K. De Datta. 1999. Weed management strategies in onion grown after rice. Proceedings of the 17th conference of the Asian-Pacific Weed Science Society Conference. Bangkok, Thailand. November 22-27, 1999. pp. 308-316.
Casimero, M.C., A.M. Baltazar, J.S. Manuel, S.R. Obien, S.K. De Datta. 1999. Morphologic and genetic variations in upland and lowland ecotypes of purple nutsedge (Cyperus rotundus L.) in rainfed rice-onion systems. Proceedings of the 17th conference of the Asian-Pacific Weed Science Society. Bangkok, Thailand. November 22-27, 1999. pp. 134-139.
2000
Baltazar, A.M., E.C. Martin, M.C. Casimero, F.V. Bariuan, S.R. Obien, S.K. De Datta. 2000. Reducing herbicide use with agronomic practices in onion (Allium cepa L.) grown after rice (Oryza sativa L.). The Philippine Agricultural Scientist 83(1):34-44.