Effect of different herbicides on growth and yield of greengram (Vigna radiata L.).
A field experiment was conducted during kharif, 2013-14 to find out the effect of different weed management practices in greengram. Weed spectrum of the experimental field consisted of three groups of weeds like grasses, sedges and broad leaved weeds. Grasses viz., Cynodon dactylon, Dactyloctenium aegyptium and Celotia argentia, sedges viz., Cyperus rotundus and broadleaved weeds viz., Digera arvensis, Trianthemaportula castrum, Commelina benghalensis, Parthenium hysterophorus, Euphorbia hirta and Hemidismus indica. Weed free (hand weeding from 15 DAS at 15 days interval; 15, 30 and 45 DAS) treatment and hand weeding at 20 and 40 DAS recorded the highest plant height, dry matter production and yield parameters compared to other treatments at all the stages of crop growth. Among the integrated weed treatments, application of imazethapyr 10% SL @ 75 g a.i. ha-1 as pre-emergence+hand weeding at 20 DAS recorded the highest plant height, dry matter production and yield parameters.