Vol. 5 (2) : March-April 2014 issue
Green Farming Vol. 5 (2) : 255-258 ; March-April, 2014
Efficacy of pendimethalin (CS) and metribuzin on weed management in soybean (Glycine max L.)
MADHU MOGULOJU1* and VENKATA RAMANA M.2
Department of Agronomy, Acharya N.G. Ranga Agricultural University, Hyderabad - 500 030 (Andhra Pradesh)
Designation : 1Ph.D scholar *(madhumoguloju@gmail.com), 2Principal Scientist & Head
Subject : Agronomy and Crop Production
Paper No. : P-1101
Total Pages : 4
Received : 28 August 2013
Revised accepted : 21 February 2014
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Citation :
MADHU MOGULOJU and VENKATA RAMANA M. 2014. Efficacy of pendimethalin (CS) and metribuzin on weed management in soybean (Glycine max L.). Green Farming Vol. 5 (2) : 255-258 ; March-April, 2014
ABSTRACT
An experiment on chemical weed control in soybean was conducted during kharif to evaluate the efficiency of different herbicides. Two hand weedings at 15 and 35 days after sowing (DAS), and among herbicidal treatments, application of metribuzin both at @ 650 g a.i./ha and at a lower dose of @ 500 g a.i./ha were found effective in reducing weed density at 30 and 60 DAS, resulting in higher weed control efficiency over other herbicides. With the highest seed yield of 1636 kg/ha hand weeding at 15 and 35 DAS was found superior to all other chemical weed control treatments except the application of metribuzin @ 650 g a.i./ha which recorded a seed yield of 1523 kg/ha and weed index value of 6.9 per cent. This was found at a par with same herbicide applied at a lower dose of @ 500 g a.i./ha (1415 kg/ha).
Key words :
Metribuzin, Pendimethalin, Soybean, Weed control efficiency, Weed index.
