Vol. 12, Issue 6 (2023)

Author(s):
A Udhaya, S Rathika, T Ramesh, D Janaki and R Jagadeesan

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 + Clodinafop 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 + Clodinafop propargyl 187.5 g/ha, PE Pendimethalin + Imazethapyr 1 kg/ha fb POE Acifluorfen sodium + Clodinafop propargyl 187.5 g/ha, PE Pendimethalin 1 kg/ha fb HW on 30 DAS, HW on 20 and 40 DAS and unweeded control (UWC) in green gram. The results revealed that lower nutrient removal by weeds, higher nutrient uptake by crop and yield parameters viz., number of pods plant^-1, pod length, number of seeds pod^-1 were registered in application of PE Pendimethalin + Imazethapyr 1 kg/ha fb POE Fluazifop-p-butyl + Fomesafen 313 g/ha. The highest grain and haulm yield were also registered in application of PE Pendimethalin + Imazethapyr 1 kg/ha fb POE Fluazifop-p-butyl + Fomesafen 313 g/ha and it was on par with PE Pendimethalin + Imazethapyr 1 kg/ha fb POE Acifluorfen sodium + Clodinafop propargyl 187.5 g/ha.