WEED MANAGEMENT IN IRRIGATED RICE (Oryza sativa L. Cv. GR-4) NURSERY
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Date
1986
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Publisher
AAU, Anand
Abstract
The field investigations were carried out at the College Agronomy Farm, B.A. College of Agriculture, Anand with a view to study the effect of different weed management practices on the control of weeds in irrigated rice (Oryza sativa L, Cv. GR-4) nursery during kharif season of 1985 with six herbicides viz., butachlor, pendimethalin, thiobencarb each at the rate of 0.50, 0.75 and 1.0 kg/ha applied as pre-sowing and post-emergence, anllofos 0.20 and 0.30 kg/ha applied as post-emergence and molinate 1.0 kg/ha and EPTC 1.125 kg/ha applied as post-emergence in randomized block design with four replications. Rabbing. rabbing plus hand weeding, hand weeding once, hand weeding twice and unweeded control were also Incliaded in this experiment for the comparison purpose. Characters studied were of green weight of Digitaria sanguinalis, Cvnodon dactylon. Cyperus rotundus, number and dry weight of weeds, number, height and dry weight of rice seedlings, nutrient content of weeds and rice seedlings, nutrient uptake by weeds and rice seedlings and nutrient statias in soil. The econcaaics of different weed management practices was evaluated on the basis of seedling yield.
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Keywords
AGRONOMY, AGRICULTURE, MANAGEMENT