Vol. 15 No. 1
Influence of weed control techniques and establishment method on yield and economics of rain fed lowland rice
Author(s): J. LHUNGDIM, Y. S. DEVI, K. N. DEVI AND Y. B. CHANU
Abstract: A research was conducted at farmers’ field at Imphal during kharif, 2015 and 2016 to determine the most profitable weed management against different crop establishment methods in lowland rice in Manipur. The highest rice grain yield (35.83 q ha-1), weed control efficiency (72.42%), harvest index and all the yield contributing characters were recorded in two hand weeded plot but was statistically at par with pyrazosulfuron-ethyl @ 30g a.i. ha-1 with one hand weeding. Transplanted rice outperformed the two direct seeded rice (sprouted and dry seeding) in all respect but was uneconomical. Maximum weed index (73.40) was observed under transplanted rice with unweeded check and least with pyrazosulfuron-ethyl fb hand weeding showing as low as 6.16 %. Economically, direct sowing (sprouted seed) with pyrazosulfuron-ethyl fb one hand weeding was proved to be the most viable combination which also conforms to the principle of integrated weed management.
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