Growth and yield of drum seeded rice as influenced by different weed management practices.

摘要

A field experiment was conducted during summer season of 2002-03 to identify the effective and economic weed management practices on the control of weeds in drum seeded rice. Pre-emergence application of sofit at 0.45 kg a.i. per/ha+cono weeder at 30 DAS+hand weeding at 30 DAS provided a broad spectrum weed control throughout the crop season in drum seeded rice, with a weed control efficiency of 98.0% at 60 DAS. Application of sofit at 0.45 kg a.i/ha+cono weeder at 30 DAS+hand weeding at 30 DAS recorded highest grain and straw yield (64.70 q/ha and 830 t/ha, respectively) followed by sofit at 0.45 kg a.i./ha+hand weeding at 30 DAS (59.35 q/ha and 8.10 t/ha, respectively). The lowest yield was observed with weedy check (21.17 q/ha and 3.50 t/ha, respectively).