Author(s): B. GOGOI AND J. DEKA

Abstract: Transplanting of rice in different seasons is by far the most popular method of rice culture. But presently, there has been a shift from transplanting to direct-seeding of rice in many parts of the country due to shortage of irrigation facility and labour. Keeping in view the importance, a study was conducted in order to evaluate the effect of 6 weed management practices in combination with 3 different direct seeded upland rice varieties and the data revealed that the percentage of grasses was higher followed by broad leaf in variety Maizubiron followed by Guni during the critical crop growth period. Lowest weed density at 20, 40 and 60 DAS was recorded in rice variety Inglongkiri under integrated weed management of Pretilachlor @ 1.5 kg ha-1 +Mechanical weeding. Higher grain yield and harvest index among rice varieties was recorded in Inglongkiri (1.98 t ha-1) and application of pretilachlor either @ 0.75 or 1.5 kg ha-1 +Mechanical weeding 30 DAS resulted the higher grain yield (1.95t ha- 1) and harvest index over two years.

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