Author(s):

Vivek, Nikhil Kumar, MK Singh, Mukesh Kumar and RK Verma

Abstract: The present investigation was conducted during the Kharif season 2016 at the Research Farm, Bihar Agricultural College, Sabour, to find out effect of different chemical weed management practices and varieties on grain yield, straw yield and harvest index of direct seeded rice. Significantly higher grain yield (37.88 q ha-1) was recorded with sequential application of pendimethalin followed by bispyribac-sodium which was 50.14% higher over weedy check. As regards to varieties, Sahbhagi Dhan recorded significantly higher grain yield (38.82 q ha-1) but remained at par (37.28 q ha-1) with variety Swarna Shreya. Whereas, interaction effect between sequential application of pendimethalin followed by bispyribac-sodium x Sahbhagi Dhan produced significantly higher grain yield (46.00 q ha-1) which showed (43.33 q ha-1) parity with pendimethalin followed by bispyribac-sodium x Swarna Shreya.

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