03888nam a2200445 4500 20260818084851.0 130598 th eng .b11589826 AIT Thesis no.AE-96-30 Chann Sinath Constraints on dry season rice production in southeastern Cambodia Bangkok : Asian Institute of Technology, 1996 67 leaves + 1 online resource Thesis ; no. AE-96-30 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science Thesis (M.Sc.) - Asian Institute of Technology, 1996 This study is related to the biological constraints on dry season flood recession rice in southeastern Cambodia. Its essential objectives are: (1) to study the yield gap between farm and on-farm experiment for rice production during dry season, (2) to evaluate the possible reason for the yield gap, (3) to determine the possible ways to eliminate the biological constraints in rice yield. The data in this study was collected from a field experiment, and farm interviews including crop cut. The experimental results show that the important contributor to the yield gap was fertilizer. But the fertilizer application without the pesticide application did not increase yield significantly, because insect damages play a second role in term of contribution to yield gap. There is no weed effect on yield gap because the experimental field was flood every year during the wet season. Yield was suppressed by severe rat damage. The result from the farm interview and crop cut survey show that the major factors of biological constraints were identified as rats, insects, diseases, and a few trouble weeds for the very early flood recession area. All the factors in biological constraint were rank by the farmers. The insects damage as the most important constraint, following by rats, diseases and weeds, respectively. The results from both experiment and farm interview and crop cut have the gap between the potential yield at the experimental field and at the actual farmer's practicing. This is because the experiment did not include rat control. Based on these results, the constraint experiment must include rodent control in the management package and survey must include more details about the problems are facing by the farmers. Rice Cambodia Tinsley, R.L., Chairperson Murty, V.V.N., Examination Committee Demaine, Harvey, Examination Committee Hansen, G.K., Examination committee Swedish International Development Cooperation Agency (SIDA), Scholarship donor Asian Institute of Technology. Thesis ; no. AE-96-30 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B14581 .b11589826 mnait v 250317 0 970320 m a v 0 mnait mnait mnarc mnarc 20 40 Barcode : 30050120577308 CREATED : 1995-10-22 RECORD # : i11922680 LPATRON : 1017405 LCHKIN : 2005-11-27 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 2 TOT RENEW : 7 Barcode : 30050120577332 CREATED : 1995-10-22 RECORD # : i11922692 LPATRON : 1017405 LCHKIN : 2005-04-20 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 11 TOT RENEW : 3 Barcode : 30050120577324 CREATED : 2012-12-17 RECORD # : i12722145 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120372437 CREATED : 2016-02-06 RECORD # : i13011480 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 22217 22217 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no.AE-96-30 30050120577308 2026-08-18 08:48:51 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no.AE-96-30 30050120577332 2026-08-18 08:48:51 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.AE-96-30 30050120577324 2026-08-18 08:48:51 3 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.AE-96-30 30050120372437 2026-08-18 08:48:51 2026-08-18 40