Physiological Parameters and Yield of Green Gram As Influenced By Weed Management Practices

Abstract

A field experiment was conducted at Anbil Dharmalingam Agricultural College and Research Institute, Tiruchirappalli during Summer, 2021 to evaluate the weed management practices in green gram. The study comprised of eleven weed management practices with different combination viz., pre emergence (PE) application of Diclosulam at 17.5 g/ha, Pendimethalin + Imazethapyr 1 kg/ha, post emergence (POE) application of Fluazifop-p-butyl + Fomesafen 313 g/ha, Acifluorfen sodium + Clodinofop propargyl 187.5 g/ha, PE Diclosulam 17.5 g/ha fb POE Fluazifop-p-butyl + Fomesafen 313 g/ha , PE Pendimethalin + Imazethapyr 1 kg/ha fb POE Fluazifop-p-butyl + Fomesafen 313 g/ha, PE Diclosulam 17.5 g/ha fb POE Acifluorfen sodium + Clodinofop propargyl 187.5 g/ha, PE Pendimethalin + Imazethapyr 1 kg/ha fb POE Acifluorfen sodium + Clodinofop propargyl 187.5 g/ha, PE Pendimethalin1 kg/ha fb HW on 30 DAS, HW on 20 and 40 DAS and unweeded control (UWC) in green gram. The results revealed that the highest plant height, number of branches plant-1, DMP, LAI, CGR, RGR and NAR were registered in PE Pendimethalin + Imazethapyr at 1 kg ha-1 fb POE Fluazifop-p-butyl + Fomesafen at 313 g ha-1. The grain and haulm yields were also higher in PE Pendimethalin + Imazethapyr at 1 kg ha-1 fb POE Fluazifop-p-butyl + Fomesafen at 313 g ha-1 and it was on par with PE Pendimethalin + Imazethapyr at 1 kg ha-1 fb POE Acifluorfen sodium + Clodinofop propargyl at 187.5 g ha-1. Hence, application of PE Pendimethalin + Imazethapyr at 1 kg ha-1 fb POE Fluazifop-p-butyl + Fomesafen at 313 g ha-1 was found to be the most viable option for getting higher growth and yield in green gram.