Growth and yield of chickpea genotypes under changing weather scenario in theNorthern Dry Zone of Karnataka

Abstract

A field experiment was conducted to study the influence of weather scenarios created by adjusting sowing dateson the growth and yield of chickpea genotypes at the Regional Agricultural Research Station, Vijayapura, Karnataka, duringRabi, 2020-21. The experiment was laid out in a split-plot design comprised of twelve treatment combinations, includingfour sowing dates viz., 1st fortnight of October, 2nd fortnight of October, 1st fortnight of November and 2nd fortnight ofNovember and three genotypes viz., JG-11, BGD-111-1 and JG-14. The sowing of chickpea during 1st fortnight of Octoberrecorded a significantly higher seed yield (1913 kg ha-1), haulm yield (2304 kg ha-1), harvest index (45.12%) and bettergrowth and yield attributes than later sown crop, but it was statistically on par with 2nd fortnight of October sowing formost of the parameters. Among the genotypes, JG-11 recorded a significantly higher seed yield of (1848 kg ha-1) followedby BGD-111-1 (1748 kg ha-1) and JG-14 (1521 kg ha-1). Interactions of sowing dates and genotypes influenced the growth,yield and economics of chickpea. In the treatment interaction, the genotype JG-11 sown during the 1st fortnight of Octoberrecorded significantly higher seed yield (2168 kg ha-1), net returns (`69,699 ha-1) and benefit-cost ratio (3.51) over otherinteractions. However, it was on par with BGD-111-1 sown at the same period and JG-11 sown during the 2nd fortnight ofOctober. The plant height was maximum with the sowing of JG-14 in the 1st fortnight of October. Therefore, we concludethat early sowing is better for getting the higher productivity of chickpea with JG-11 and BGD-111-1 genotypes. Thegenotype JG-14 is heat tolerant and well suited for delayed sowing upto the 2nd fortnight of November