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Not AvailableField experiment were conducted to study the phenology and thermal requirement in different chickpea varieties under irrigated and unirrigated conditions. The crop phenology was expressed in terms of emergence, 1st flower initiation, 50% flowering, 1st pod initiation, 50% podding and physiological maturity. The corresponding requirement of days to attain the various phenological stages and growing degree days (GDD) were workout. Under irrigated conditions, the varieties BG362 and ICC-4958 took relatively less time to mature (about 142 days) while Amethyst and Tyson took slightly longer time, maturing in about 146 days. Under unirrigated conditions, the phenological events were attained earlier in all the varieties as compared to irrigated conditions. The unirrigated crop matured 7-10 days earlier and accumulated less GDD than the irrigated crop. The heat use efficiency (HUE) was also found to be of a similar trend.Not Availabl

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Not AvailableField experiments were conducted at IARI, New Delhi to study the interception of photosynthetically active radiation and utilization in six varieties of chickpea viz., Amethyst, Annegiri, BG-362, ICC-4958, K-850 and Tyson. Among the varieties, BG-362, K-850 and Annegiri intercepted higher percentage of photosynthetically active radiation (PAR) as compared to the other three varieties under both irrigated and unirrigated conditions at the maximum leaf area index (LAI) stage. The intercepted photosynthetically active radiation (IPAR) was closely related to the biomass production. The R2 values for the regression equations between IPAR and biomass revealed that IPAR accounted for 90 to 93 per cent of the variation in biomass production in chickpea. Both IPAR and radiation use efficiency (RUE) were reduced under unirrigated conditions. However, the reduction in RUE was relatively less in Annegiri. K-850 and ICC-4958 suggesting that it has a role to play for increasing the productivity of chickpea in rainfed areas.Not Availabl