Performance of different weed control chemicals for control of Little seed canary grass (Phalaris minor Retz.) in wheat
Field experiment was conducted during 2005-06 and 2006-07 to evaluate the effect of Fenoxaprop-p-ethyl, Metribuzin and Metsulfuron -methyl for control of little seed canary grass in wheat crop. The pooled analysis of two years data revealed that little seed canary grass (53.52%) was the most dominant weed in the experimental field of wheat crop. Fenoxaprop-p-ethyl showed the most potent direct effect and caused maximum decrease in little seed canary grass (P. minor) population and its dry weight production in comparison to other chemicals as evidenced by its relative population (8.17 plants/m2) at harvest of the wheat crop due to its selective nature. Fenoxaprop-p-ethyl at 90 g.a.i.ha-1 treated plot lowered the growth characters of Phalaris minor like plant height, number of tillars, leaf area and dry weight production as compared to metribuzin, metsulfuron-methyl and weedy check. The dry weight production of P. minor was reduced from 70.53 g m-2 in weedy check to 9.96 gm-2 in fenoxaprop-p-ethyl at 90 g.a.i.ha-1 treated plot. Metribuzin at 70g a.i.ha-1 was the second best chemical treatment in reducing the population and dry weight production of P. minor followed by metsulfuron-methyl at 4.0 g.a.i.ha-1. Fenoxaprop-p-ethyl at 90ga.i.ha-1 provided excellent control of little seed canary grass (P. minor) and produced effective tillers and grain yield of wheat in comparison to other weed control chemicals.