Weed control in rice (Oryza sativa) nursery

Abstract

An experiment was conducted during rainy (kharif) season 1991-93 to study weed control in rice (Oryza sativa L.) nursery in medium black soil, with 6 treatments consisting 3 herbicides (butachlor 1.5 kg, thiobencarb 1.5 kg and anilophos 0.3 kg a.i.lha) and other treatments being hand-weeding at 20 days after sowing, Gliricidia leaves 1 kglmZ as mulch and unweeded control. The fresh weight of rice seedlings due to application of herbicides and hand-weeding once were found significantly superiorto the unweeded control. The significant reduction in weed biomass was due to application of herbicides and hand-weeding once in comparison with the treat- ments of unweeded control and Gliricidia leaves. The saving due to use of weedicides and Gliricidia leaves for 0.10 ha nursery area over manual weeding was Rs 225 and 153 respectively.