The present investigation “
Studies to quantify the optimum temperature range for higher chickpea yield in different growing environments under Raipur condition.” was conducted at Raipur (Chhattisgarh). The phenophases-wise thresholds and optimum temperature range of individual temperature variables responsible for above average (high), average (optimum) and below average (low) yields were analysed for zonal check Vaibhav variety of chickpea. The study was conducted during 2017-18 to 2023-24 in rabi seasons. Threshold temperature analysis for the Vaibhav chickpea variety observed that during the P-II stage (Branching to Flower Initiation) yield declined from 1912 to 738 kg ha⁻¹ with increased minimum temperature from 11.6°C to 13.7°C. Normal grain yield (1325 kg ha
-1) was obtained in minimum temperature range during PII stage falls in the range of 9.7 to 15.1 °C. Grain yield was found to be higher (>1912 kg ha
-1) when maximum temperature was 8.9 to 15.1 °C during P-II stage (Branching to Flower initiation). Minimum temperature during the P-II stage (Branching to Flower Initiation) showed a significant negative correlation with yield (r = -0.526*). Across all growth stages, P-II showed the strongest negative correlation between minimum temperature and yield confirming that lower night temperature during branching to flowering stage is crucial for better chickpea yield under Raipur conditions.
