Bio-efficacy of Fenoxaprop-p-ethyl, Metsulfuron-Methyl and Metribuzin on Control of Weed Phalaris minor Retz. in Wheat Field

摘要

Field experiment was conducted to study the bio-efficacy of different herbicides for control of weed Phalaris minor Retz. in wheat field during winter seasons of 2005-06 and 2006-07. There was drastic reduction in the population and dry weight of Phalaris minor when fenoxaprop-p-ethyl at 90 g.a.i./ha was applied in wheat crop. This treatment also gave maximum value of crop dry weight, Plant height, number tillers/plant, spike length, number of grains/spike and 1000 grain weight of wheat. The weed control efficiency of this treatment was recorded 81.62 and 81.91% during 2005-06 and 2006-07, respectively. Metribuzin at 70 g.a.i./ha was also effective in controlling the population and dry weight of Phalaris minor. These herbicide treatments provided higher values of yield attributes and crop dry weight over weedy (control) during both the years. Maximum crop dry weight was recorded in weed-free plots (1.431 and 1.512 Kg/m(2)) and minimum in weedy plots (1.009 and 0.895 Kg/m(2)) during both the years of 2005-06 and 2006-07.