Dry direct-seeded rice, Eco-friendly weed management, Seed rate, Weed control efficiency, Weed management

A field experiment was conducted at Agricultural Research Station, Dhadesugur, University of Agricultural Sciences, Raichur, Karnataka, India during rainy (Kharif) seasons of 2017 and 2018 to identify the eco-friendly weed management practice in dry direct-seeded rice under organic production system. The experiment was laid out on fixed site in two consecutive years in a split plot design with two main plot treatments and five sub plots. Along with main and sub-plot treatments, recommended weed management practice as outside uneven control was kept for comparison. The 25% higher rice population with the seed rate of 25 kg/ha along with rice bran at 2 t/ha followed by (fb) hand weeding (HW) recorded significantly lower total weed density (36.60, 46.72 and 42.94 g/m2) and biomass (28.28, 66.95 and 49.40 g/m2); higher weed control efficiency (62.82, 63.73 and 74.17% at 20, 30 and 50 DAS) and higher grain yield (4.81 t/ha) of dry direct-seeded rice under organic production system and it was at par with 25% higher rice population with the rice seed rate of 25 kg/ha along with one inter-cultivation (IC) and hand weeding.