Vol. 5 (1) : January-February 2014 issue
Green Farming Vol. 5 (1) : 46-50 (January-February, 2014)
Interaction effect of weed management practices, brown manuring and nitrogen levels on yield of direct seeded rice and growth of weeds
S.K. YADAV1*, D.K. SINGH2 and MANISHA RANI3
Deptt. of Agronomy, College of Agriculture, G.B. Pant University of Agriculture & Techn., Pantnagar - 263 145 (Uttarakhand)
Designation : 1,3Sr. Res. Fellow *(santosh.yadav87@gmail.com), 2Assoc. Professor
Subject : Agronomy and Crop Production
Paper No. : P-1096
Total Pages : 5
Received : 31 August 2013
Revised accepted : 25 December 2013
Get Access
Citation :
S.K. YADAV, D.K. SINGH and MANISHA RANI. 2014. Interaction effect of weed management practices, brown manuring and nitrogen levels on yield of direct seeded rice and growth of weeds. Green Farming Vol. 5 (1) : 46-50 (January-February, 2014)
ABSTRACT
A study was carried out at G. B. Pant University of Agriculture and Technology, Pantnagar and the result showed that uncontrolled weeds in un-weeded plots caused on an average reduction in grain yield by 92.9 per cent during crop season over best weed management agro-techniques i.e. W2. The lowest weed population and dry weight were recorded with the use of 75 kg N ha-1 over other two nitrogen levels (100 and 125 kg N ha-1). Highest yield attributes, and grain yield (4.75 t ha-1) was recorded with 125 kg N ha-1. Pre-emergence application of pendimethalin @ 1.0 kg ai ha-1 + 2 hand weeding (HW) produced highest grain yield during crop growth followed by pendimethalin @ 1.0 kg ai ha-1-pre-cowpea + 1 HW. It was also found superior over all other weed management agro-techniques in reducing population and dry matter of weeds.
Key words :
Direct-seeded rice, DSR, Nitrogen dozes, Oryza sativa, Rice weeds, Weed management.
