Journal of Pure and Applied MicrobiologyVol. 11 No. 2

Effect of Weed Management Practices on Yield and Economics of Semidry Rice

K.Hemalatha1, A.V. Ramana2, Neelam Bisen1 and Meena Rani1

1Department of Agronomy, Institute of Agricultural Sciences, BHU, Varanasi 221 005, Uttar Pradesh, India. 2 Professor and Head, Department of Agronomy, Acharya N.G. Ranga Agricultural University, Agricultural College, Naira 532 185, Andhra Pradesh, India.

Received on 19 August 2016 and accepted on 27 September 2016

 

ABSTRACT

A field experiment was conducted during khari f, 2014 in sandy loam soils of Agricultural College Farm, Naira, to find out the effect of weed management practices on yield attributes, yield and economics of semidry rice. The experiment was laid out in randomized block design with ten treatments, each replicated thrice. It was found that superior performance of rice in terms of yield attributes and yield was observed with pre-emergence application of pendimethalin @ 0.75 kg a.i ha-1 at 3-5 DAS fb post-emergence application of metsulfuron methyl + chlorimuron ethyl @ 4 g a.i ha-1 at 20-25 DAS (T10) which was comparable with weed free check (T2). Maximum grain yield, net returns and B: C ratio were also associated with pre-emergence application of pendimethalin @ 0.75 kg a.i ha-1 at 3-5 DAS fb post-emergence application of metsulfuron methyl + chlorimuron ethyl @ 4 g a.i ha-1 at 20-25 DAS (T10) .

Keywords : Economics, herbicides, semidry rice, weeds, yield