Vol. 12, Issue 2 (2023)

Author(s):
Sujit Shivasimpiger S, Bandiwaddar TT, Hundekar ST and VS Kubsad

Abstract:
A field experiment was conducted to study the “Effect of Boron nutrition on growth, yield and economics of rabi sorghum (sorghum bicolor L. Moench) under rainfed condition in northern transition zone of Karnataka during rabi 2021-22 at AICRP on Sorghum, MARS, University of Agricultural Sciences, Dharwad. The experiment was laid out in a Randomized Block Design with eight treatments and three replications. The results indicated that application of 50:25:15 kg N:P₂O₅:ZnSO₄ ha^-1 + FYM @ 3 t ha^-1 + Boron @ 1.0 kg ha^-1 (soil)+ Boron @ 0.1 percent foliar spray at panicle initiation and flowering stage recorded significantly maximum plant height (225.3 cm), leaf area (50.10 dm² plant^-1), leaf area index (7.80 plant^-1), total dry matter accumulation (233.23 g plant^-1), higher grain yield (35.02 q ha^-1), fodder yield (67.22 q ha^-1) over control, but was on par with application of 50:25:15 kg N:P₂O₅:ZnSO₄ ha^-1+FYM @ 3 tha^-1+ Boron @ 1.0 kgha^-1 (soil)+ Boron @ 0.2 percent foliar spray at panicle initiation and flowering. Significantly higher gross returns(₹ 96522ha^-1), net returns (₹ 56526ha^-1) and BC ratio (2.41) was recorded with application of 50:25:15 kg N:P₂O₅:ZnSO₄ ha^-1+FYM @ 3t ha^-1+ Boron @ 1.0 kgha^-1 (soil)+ Boron @ 0.1 percent foliar spray at panicle initiation and flowering compared to control but was on par with 50:25:15 kg N:P₂O₅:ZnSO₄ha^-1 + FYM @ 3 t ha^-1+ boron @ 1.0 kgha^-1 (soil) +boron @ 0.2 percent foliar sprayat panicle initiation and flowering stage.