Weed dynamics, growth, yield and economics of wheat (Triticum aestivum L.) crop as affected by fenoxaprop-p-ethyl and clodinafop herbicides

摘要

A field experiment was conducted at Agronomy Research Farm of Narendra Deva University of Agriculture and Technology, Kumarganj, Faizabad (U.P.) during winter (rabi) season of 2010-11 with an objective to find out the effect of fenoxaprop-p-ethyl andclodinafop on growth and yield of wheat and to study the effect of various doses of fenoxaprop-p-ethyl on Phalaris minor and weed control efficiency and to work out the economics of various treatments. The experiment was replicated thrice in randomized block design having ten number of treatments viz. fenoxaprop-p-ethyl 10% EC at 75,100,120,150,200 and 240 /ha, and clodinafop 60 g/ha with two checks - weedy and weed free. The crop was sown 20 cm apart by ferti-seed drill on 23 December, 2010 with the wheat variety Malviya-234. The density of narrow leaved and other weeds as well as dry weight were recorded significantly less with fenoxaprop 240 g a././ha as compared to rest of the herbicidal treatments. All the growth and yield contributing charactersviz. plant height, leaf area index, dry matter accumulation, number of shoots and spikes, spike length as well as grain and straw yields of wheat crop except test weight were significantly higher in weed free check and fenoxaprop (whipsuper) 120 g a.i./ha. It can be concluded that fenoxaprop (whipsuper) 120 g a.i./ha proved superior herbicide with respect to weed control, crop yield and monetary benefits in wheat followed by fenoxaprop 120 g a.i. /ha and clodinafop 60 g/ha.