Yield and yield components of wheat as affected by weed control of common mallow with Apyrus and Othello herbicides

Abstract

This study was conducted to investigate the effect of various concentrations of Apyrus and Othello herbicides on the common mallow weed control and their possible negative effect on wheat yield in 2017-18 in Ahwaz, Iran. The treatments were Othello at concentrations of 1.25, 1.5, and 1.75 L/ha and Apyrus at concentrations of 24.26, 26.6, and 30.6 g/ha. Results showed that herbicide treatments significantly reduced the density and dry weight of common mallow weed after spraying (intervals of 15 and 30 days). Best results in reducing the density and dry weight of Mallow weed were recorded in the dose of 30.6, 26.6 g/ha of Apyrus, and 1.75 and 1.5 L/ha of Othello. The effect of treatments was also significant on stem height, spike number per plant and grain number per spike, 1000-grain weight, biological yield and grain yield of wheat. The highest grain yield of wheat was obtained in no-weed control (4359 kg/ha), and in herbicide treatments was 3981 kg/ha that was obtained in 1.75 L/ha of Othello, followed by 26.6 g/ha of Apyrus; while, these yields were not significantly different.