Vol. 6, Issue 5 (2018)
Effect of new post emergence herbicides on weeds of fodder maize (Zea mays L.)
Author(s): Jhariya Roshani, Jha Amit, Chauhan Abhishek and Rawat Anay
Abstract: The present study was conducted at Research Farm, AICRP on Forage Crops, Department of Agronomy, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur (Madhya Pradesh) during Kharif season 2016-2017. With a view to find out the effect of new post emergence herbicides on weeds and seed yield of fodder maize (Zea mays L.). An experiment based on randomized block design with three replications. Eight treatments consisted with pre emergence application of atrazine 1000 g/ha, post emergence application of 2, 4-D 500 g/ha, tembotrione 120 g/ha and topramezone 35 g/ha alone, combined application of tembotrione 120 g/ha + atrazine 250 g/ha, topramezone 35 g/ha + atrazine 250 g/ha, hand weeding twice at 20 and 40 DAS and weedy check. Sowing of maize cv. African Tall was done on 1st July, 2016 by using the seed rate 40 kg/ha as per treatments in the rows 60 cm apart. Intensity of weeds and dry matter accumulation by weeds were made species wise and finally weed control efficiency and weed index were determined. The predominating weeds were Cyperus rotundus and Commelina communis among monocot, Eclipta alba and Phyllanthus niruri and Alternanthera spp. among dicot weeds, beside handsome total of several number of minor weeds in maize fields. These weeds severely invaded during crop-weed competition period and other growth stages as well. Post emergence application of topramezone 35 g/ha, tembotrione 120 g/ha and combined application of topramezone 35 g/ha + atrazine 250 g/ha, tembotrione 120 g/ha + atrazine 250 g/ha significantly reduced the infestation of all associated weeds over weedy check and was found most effective in paralyzing the weed growth to that of 2, 4-D 500 g/ha and atrazine 1000g/ha alone.
Pages: 2126-2131 | 298 Views 71 Downloads
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How to cite this article:
Jhariya Roshani, Jha Amit, Chauhan Abhishek, Rawat Anay. Effect of new post emergence herbicides on weeds of fodder maize (Zea mays L.). Int J Chem Stud 2018;6(5):2126-2131.
