Bioefficacy of New Herbicides for the Control of Resistant Phalaris minor in Wheat

An experiment was conducted to find out the bioefficacy of some new herbicides i.e. clodinafop, fenoxaprop-p-ethyl and sulfosulfuron on the experimental farm of Punjab Agricultural University, Ludhiana, India, during 1996–97 and 1997–98 for the control of isoproturon resistant Phalaris minor in wheat. During both years, maximum yield was obtained with sulfosulfuron at its highest dose closely followed by fenoxaprop-p-ethyl and clodinafop. In first year diclofop methyl and tralkoxidim also gave similar yield to those under new herbicides. However, during 1997–98 isoproturon @ 0.94 kg ha⁻¹ produced significantly less grain yield as compared to new herbicides. All the new tested herbicides during both the years showed no phytotoxic effect on wheat and provided nearly 100% control of Phalaris minor.