Vol. 10, Issue 7 (2021)

Author(s):
Vivitoli I, Dr. Tankeswar Gohain and Gauri Mohan

Abstract:
A field experiment was conducted during the kharif season of 2018 at the experimental farm of Agronomy, NU:SASRD, Medziphema campus, Nagaland, to study the effect of non-chemical weed management techniques for direct seeded rice. The experiment was laid out in randomized block design with 8 treatment combinations consisting of non chemical weed management practices comprised of five treatments viz. Weedy check (W₁), Hand weeding at 30 and 60 DAS (W₂), Soil solarisation (W₃), Brown manuring (W₄), Organic mulching (W₅). Sowing methods comprised of three treatments viz. Broadcasting (S₁), Line sowing at 20 cm (S₂) and Hand dibbling (S₃). Non-chemical weed management treatment hand weeding at 30 and 60 DAS significantly reduced weed density, weed biomass and increased weed control efficiency, grain yield (35.05 q ha^-1), straw yield (80.93 q ha^-1) whereas weedy check (W₁) recorded the highest weed density, weed biomas and lowest weed control efficiency, grain yield (17.30 q ha^-1), straw yield (69.77 q ha^-1). Among the sowing methods S₂-Line sowing recorded lower weed density, weed biomass and higher weed control efficiency, highest grain yield (29.24 q ha^-1).