Effect of Herbicides and their Mixtures on Broad Leaf Weeds and Yield of Wheat

Abstract

A field study was conducted at Agronomy Research Farm of CCS Haryana
Agricultural University, Hisar during Rabi season of 2016-17. The experiment comprised of
five post emergence herbicides (metsulfuron, carfentrazone, 2, 4-D Ester, pyroxsulam and
halauxifen) and their mixtures at different doses along with weedy check and weed free
treatment. Application of halauxifen + pyroxsulam sprayed at 23.96 g/ha at 35 days after
sowing was the most effective treatment to control the broad leaf weeds in wheat with higher
weed control efficiency. Application of the herbicides halauxifen + pyroxsulam at 23.96 g/ha,
metsulfuron + 2, 4-D Ester at (3 + 500 g/ha) and halauxifen + pyroxsulam at 19.17 g/ha
significantly increased the dry matter accumulation of wheat and plant height compared to
weedy check. Application of halauxifen + pyroxsulam at 23.96 kg/ha, metsulfuron + 2, 4-D
Ester at 3 + 500 g/ha and carfentrazone + 2, 4-D Ester at 15 + 500 g/ha resulted into higher
number of tillers per meter row length. Halauxifen + pyroxsulam sprayed at 23.96 g/ha at 35
days after sowing resulted into higher grain yield of 5395 kg/ha, straw yield of 8466 kg/ha
and biological yield of 13861 kg/ha followed by metsulfuron + 2, 4-D Ester at 3 + 500 g/ha
and carfentrazone + 2, 4-D Ester at 15 + 500 g/ha