Vol. 12, Issue 11 (2023)

Author(s):
Bindushree K, Ramesha YM, Krishnamurthy D, Siddaram waded and Chandra Naik M

Abstract:
A field experiment was conducted during Kharif 2022 at ARS, Dhadesugur to study the effect of weed management practices on growth, nutrient uptake and economics of direct seeded rice. There were eight treatments consisting of five different post emergent herbicides sprayed at 25 DAS, hand weeding at 20 and 40 DAS, weed free check and weedy check. Results revealed that, application of cyhalofop butyl 5.1% + penoxsulam 1.02% OD @ 2000 ml ha^-1 at 25 DAS recorded significantly higher plant height, number of leaves, leaf area, leaf area index and dry matter accumulation. It has also resulted in enhanced nutrient uptake. It was profitable too in terms of higher net returns (Rs. 97,920 ha^-1) and B C ratio (2.62) of direct seeded rice production. Results confirmed that application of cyhalofop butyl 5.1% + penoxsulam 1.02% OD @ 2000 ml ha^-1 at 25 DAS (weeds at 2-3 leaf stage) was most effective in managing the weeds with higher growth components with enhanced nutrient uptake resulting in higher yield of direct seeded rice.