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K. SATHISH BABU, D. SUBRAMANYAM*, V. UMAMAHESH AND V. SUMATHI
Department of Agronomy, S.V. Agricultural College, Tirupati-517 502
A field experiment was conducted during summer, 2015 at S.V. Agricultural College Farm, Tirupati to identify the effective and economical weed management practices for the control of weeds in sesame. The weed flora associated in the experimental field were Cyperus rotundus (40.0%), Commelina benghalensis (10.0%), Cleome viscosa (8.0%), Boerhavia diffusa (5.0%), Phyllanthus niruri (5.0%), Dactyloctenium aegyptium (5.0%) and Digitaria sanguinalis (4.0 %). Among the different weed management practices tried, two hand weedings at 20 and 40 DAS has recorded the lowest weed dry weight and highest crop dry matter production, seed yield and haulm yield. The next best weed management practice was the pre-emergence application of oxyfluorfen 75 g ha-1 + quizalofop 50 g ha-1 in recording higher seed and haulm yield. However, the highest benefit-cost ratio (2.27) was realized with pre-emergence application of oxyfluorfen 75 g ha-1 + propaquizafop 60 g ha-1 applied at 20 DAS, which was at par with pre-emergence application of oxyfluorfen 75 g ha-1 + quizalofop 50 g ha-1 applied at 20 DAS (2.25).
Herbicides, Sesame, Weed management, Yield.