Vol. 9, Issue 7, Part S (2025)

Crop growth and development are strongly associated with thermal energy parameter which directly influence its yield and economics. Hence, experiment was conducted on response of black gram cultivar on yield, economics and heat unit under different sowing windows during kharif 2024-25 at Agronomy Farm, College of Agriculture, Nagpur. The experiment was laid out in split plot design with three sowing windows i.e 25^th MW, 26^th MW and 27^th MW as main plot treatment and four varieties i.e. PDKV Blackgold, TAU-1, PKV Urd-15 and Local as sub plot treatment and replicated thrice. Result revealed that 26^th MW recorded significantly superior seed yield, straw yield, gross monetary return, net monetary return, B: C ratio as compare to the 25^th MW and 27^th MW and accumulated growing degree days highest in 25^th MW decreases with dealy in sowing. Among the cultivars TAU-1 recorded highest seed and straw yield, economic returns, B: C ratio and GDD accumulation in comparison with PDKV Blackgold, PKV Urd-15 and Local variety.