Impact of Different Doses of Herbicides on Weed Density and Weed Control Efficiency in Maize
Shivendra Singh *
Department of Agronomy, C.S.A. University of Agriculture and Technology, Kanpur-208002, India.
Ram Ashish Yadav
Department of Agronomy, C.S.A. University of Agriculture and Technology, Kanpur-208002, India.
Sunil Kumar Prajapati
Division of Agronomy, ICAR-IARI, New Delhi-110012, India.
Pradeep Kumar
Department of Agronomy, C.S.A. University of Agriculture and Technology, Kanpur-208002, India.
Praveen Kumar Yadav
Department of Agronomy, C.S.A. University of Agriculture and Technology, Kanpur-208002, India.
Naushad Khan
Department of Agronomy, C.S.A. University of Agriculture and Technology, Kanpur-208002, India.
Prashun Sachan
Department of Agronomy, C.S.A. University of Agriculture and Technology, Kanpur-208002, India.
*Author to whom correspondence should be addressed.
Abstract
A field experiment was conducted at Chandra Shekhar Azad University of Agriculture and Technology, Kanpur during Kharif season of 2021. To evaluate the effect of different doses of Mesotrione 2.27% w/w + Atrazine 22.7% w/w SC on growth and yield of maize (Zea mays L.). The experiment was laid down in the Randomized block design with ten treatments which was replicated three times. Experimental Field was infested with Echinochloa colona, Digitaria sanguinalis, Dactyloctenium aegyptium, Commelina benghalensis, Trianthema and Cyperus rotundus. Ready-mix herbicide, Mesotrione 2.27% w/w + Atrazine 22.7% w/w SC (Calaris Xtra) manufactured by Syngenta was used in the experiment. Among the herbicidal treatments, the application of Mesotrione 2.27% w/w + Atrazine 22.7% w/w SC @ 1.750 kg a.i. ha-1 recorded the lowest weed density and highest weed control efficiency (approx. 90%) at every growth stage of maize. However, among herbicidal treatments, grain yield of maize was maximum with the application of Mesotrione 2.27% w/w + Atrazine 22.7% w/w SC @ 1.0 kg a.i. ha-1(T4) which might be due do toxicity effect of herbicide.
Keywords: Doses, ready-mix, herbicide