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B. SANDHYA RANI*, V. CHANDRIKA, G. PRABHAKARA REDDY, P. SUDHAKAR, K.V. NAGAMADHURI AND G. KARUNA SAGAR
Assistant Professor, Department of Agronomy, S.V. Agricultural College, Tirupati – 517 502, Andhra Pradesh
Field experiment was conducted during rabi, 2017-18 at wetland farm of S.V. Agricultural College, Tirupati, Andhra Pradesh. The experiment was laid out in a randomized block design with three replications. There were 10 treatments consisting of pre emergence application of atrazine @ 1.0 kg a.i ha-1 fb post emergence application of tembotrione @ 120 g, topramezone @ 30 g, halosulfuron methyl @ 67.5 g, 2, 4-D amine salt @ 580 g, tembotrione @ 60 g + 2, 4-D amine salt @ 290 g, topramezone @ 15 g + 2, 4-D amine salt @ 290 g, halosulfuron methyl @ 34 g a.i ha-1 + 2, 4-D amine salt @ 290 g a.i ha-1, pre emergence application of atrazine @ 1.0 kg a.i ha-1 fb one HW at 30 DAS, hand weeding twice at 15 and 30 DAS and control. The results revealed that broad-spectrum weed control and higher kernel yield of maize was recorded with hand weeding twice at 15 and 30 DAS, which was however comparable with application of atrazine @ 1.0 kg a.i ha-1 as pre emergence fb topramezone @ 30 g a.i ha-1 as post emergence and atrazine @ 1.0 kg a.i ha-1 as pre emergence fb tembotrione @ 120 g a.i ha-1 as post emergence without any significant disparity among them.
Chemical weed management, maize, yield, weed dry weight