AGRO-ECONOMIC ASSESSMENT OF PRODUCTION TECHNOLOGY OF UPLAND RICE (ORYZA-SATIVA)

An economic assessment was made during wet seasons of 1988 and 1989 on improved agro-techniques of upland rice (Oryza sativa L.) cultivation , tested on farm and at station. Recommended fertilizer dose of 40, 8. 67 and 16.67 kg/ha of N, P and K respectively produced higher grain yi eld (1.8 tonnes/ha) and resulted in greater marginal rate of return th an 20, 8.67 and 16.67 kg/ha of N, P and K, and the farmers' practice o f applying 20 kg N/ha at the time of seeding (1.10 tonnes/ha). At pre- emergence, supplementary application of butachlor @ 1.5 kg ai/ha to si ngle hand-weeding gave 497% marginal rate of return compared with sing le hand-weeding 30 days after seeding. Farmers' practice of broadcast seeding was inferior to improved practice of seeding in furrows 20 cm apart.