Vol. 12, Issue 9 (2023)

Author(s):
KL Vinay, Satish Kumar and Pradeep Kumar Kanaujiya

Abstract:
A field experiment was conducted at the Crop Research Centre, School of Agriculture, ITM University, Gwalior (M.P) during Kharif season 2022. The experiment was laid out in Randomized Block Design, replicated three times and consisted of twelve treatments. The herbicides were used individually as well as in combinations viz; T₁ Pendimethalin (30% EC) P.E @ 800 g ha^-1, T₂ Pendimethalin (30% EC) P.E @ 1000 g ha^-1, T₃ Pendimethalin (30% EC) P.E @ 1200 g ha^-1, T₄ Oxyfluorfen (23.5% EC) P.E @ 150 g ha^-1, T₅ Oxyfluorfen (23.5% EC) P.E @ 200 g ha^-1, T₆ Oxyfluorfen (23.5% EC) P.E @ 250 g ha^-1, T₇ Imazethapyr (10% SL) P.E @ 60 g ha^-1, T₈ Imazethapyr (10% SL) P.E @ 70 g ha^-1, T₉ Imazethapyr (10% SL) P.E @ 80 g ha^-1 T₁₀ Imazethapyr (10% SL) + Imazamox (10% SC) POE @ 35 +35 g ha^-1 and T₁₁ and T₁₂ being weed free and weedy check respectively. The soil of experimental field was sandy loam having pH-7.35, Organic-carbon-0.48, Available NPK-235.2, 14.5 and 238.4 respectively. The crop was affected with different type of weed flora eg: Dinerba retroflexa and Digitaria Sanguinalis of Narrow leaf weeds, Amaranthus Viridis and Euphorbia Hirta of Broad leaf weeds, and Cyperus rotundus of sedges. The experimental results indicated that among the herbicidal treatments T₁₀ Imazethapyr (10% SL) + Imazamox (10% SC) POE @ 35 +35 g ha^-1 recorded the lowest weed density (10.57), Dry weight (6.44), Weed Index (5.84) when compared to others. However, highest Weed control efficiency (82.05) was recorded with T₁₀ Imazethapyr (10% SL) + Imazamox (10% SC) POE @ 35 +35 g ha^-1 followed by T₃ Pendimethalin (30% EC) P.E @ 1200 g ha^-1. Yield and like Grain yield (810.04 kg ha^-1), Stalk yield (2111.37 kg ha^-1), Harvest index were significantly higher with T₁₀ Imazethapyr (10% SL) + Imazamox (10% SC) POE @ 35 +35 g ha^-1.