Crop Establishment Methods and Weed Management Practices
on Productivity and Economics of Transplanted Rice
-
Author:C. Sangeetha, A. Velayutham and P. Muthukrishnan
p-ISSN:0024-9602, e-ISSN:2582-5321, Vol:102, Issue:jan-mar
DOI: https://doi.org/10.29321/MAJ.10.001061
Abstract
Field experiments were conducted in clay loam soil of wetland farm, Tamil Nadu Agricultural
University, Coimbatore during rabi, 2011-12 and 2012-13 to evaluate different crop
establishment methods and weed management practices in lowland transplanted rice. The
experiment was laid out in strip plot design with three replications. The treatments consisted
of three crop establishment methods in horizontal strips and six weed management practices
in vertical strips. The results of the study indicated that mechanical transplanting at 30 x 20
cm with conoweeding four times at 10 days interval starting from 10 DAT resulted in higher
grain yield, higher net returns and B:C ratio. This practice was comparable with mechanical
transplanting at 30 x 20 cm with preemergence application of pretilachlor @ 0.75kg a.i. ha -1 +
early post emergence application of bispyribac sodium @ 20g a.i. ha -1 coupled with
conoweeding at 40 DAT.
Key words : Transplanted rice, Machine planting, Grain and straw yield, Economics