The efficacy of weed management practices with crop geometries on growth, yield and economic viability of clusterbean [Cyamopsis tetragonoloba (L). Taub.] varieties

The field experiment carried out during kharif seasons of 2015 and 2016 at Research Farm, College of Agriculture, RVSKVV, Gwalior, Madhya Pradesh indicated that HG 2–20 (V₂) was significantly superior under weed control efficiency, crop growth and yield attributes, seed yield and economics over HG 563 (V₁). 30 cm x 10 cm (S₁) crop geometry observed significantly effective over 45 cm x 6.5 cm (S₂). Weed free situation (W₅) was significantly superior in similar parameters; while lower values were observed under weedy plot (W₆). Among herbicidal treatments; Imazethapyr 35% WG + Imazamox 35% WG (Pre-mix) @ 40 g a.i./ha (W₄) followed by Imazethapyr 10% EC @ 75 g a.i./ha (W₃) were achieved statistically at par and significantly effective results over rest of the treatments. In case of interaction; the significantly superior values were registered under interaction of HG 2–20 (V₂) with 30 cm x 10 cm (S₁) to weed free situation (W₅) over rest of the interactions. Among interaction of herbicidal treatments with varieties and crop geometries; Imazethapyr 35% WG + Imazamox 35% WG (Pre-mix) @ 40 g a.i./ha (W₄) combined with HG 2–20 (V₂) and 30 cm x 10 cm (S₁) earned significantly effective over other interactions.