03137cas a2200385 a 4500 20260818094605.0 111005s1991 th uu|m rtt 0| a1eng d .b10072287 AIT Thesis no. AE-91-43 Nguyen Manh Trung An economic evaluation of the major rice varieties in the Red River Delta of Vietnam Bangkok : Asian Institute of Technology, 1991 92 p. + 1 online resource Thesis ; no. AE-91-43 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science Thesis (M.Sc.) - Asian Institute of Technology, 1991 Due to the policy reform in agricultural economic management, the increasing· of input investments into production, and the application of new advanced technologies as modern rice varieties, the rice output of Vietnam has been increasing. This study evaluates some major rice varieties popularly grown in the Red River Delta which is one of the biggest rice cultivated area of the country. The selected rice varieties of IR8, V18, V15, CR203 in the four different agro-ecological zones are evaluated based on the experimental data collected from research station. The fluctuation of yield in the period of 1985-1989 were analysed to determine the stability of performance in each location. The yield across the four regions were analysed to determine the adaptability of each variety. From the market prices of paddy and inputs last year (1990), optimum input levels of fertilizer use are estimated. The results IR8 is better cultivated in the irrigated area of Hanoi, Haihung, Thaibinh in the dry season if the price of nitrogen fertilizer increase CR203 would be better. In the lowland, degraded areas CR203 is preferable in both seasons and for saline area in the wet season while V15 is more stable and economical in the dry season of saline area only. It is suggested that the rice scientists in Vietnam should pay more attention on new research objective in order to cope with the trend on price of paddy and nitrogen fertilizer in the near future. Rice Vietnam Red River Delta Varieties Suthad Setboonsarng, Chairperson Upasena, S.H., Examination committee Sumitra Poovarodom, Examination committee Government of Australia, Scholarship donor Asian Institute of Technology. Thesis ; no. AE-91-43 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17292 .b10072287 mnait s 240410 2 951012 m a s 3 mnait mnarc 22 40 Barcode : 30050120581300 CREATED : 2013-06-09 RECORD # : i12740925 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120362818 CREATED : 2016-05-27 RECORD # : i13001164 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 33234 33234 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no. AE-91-43 30050120581300 2026-08-18 09:46:05 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. AE-91-43 30050120362818 2026-08-18 09:46:05 2026-08-18 40