Agrometeorological Indices and the Weather Parameters Impact on Growth and Yield of Pearl Millet

Abstract

The experiment entitled “Studies on crop weather relation in pearl millet (Pennisetum glaucum L.) under experiment was carried out in FRBD (Factorial Random Block Design). Nine treatment combinations comprise of three sowing environments viz. crop sown on 28th June (G1), 8th July (G2) and 18th July (G3) respectively along with three cultivars i.e., PC-701, HHB-67 and RHB-223 were used in the investigation. The minimum temperature and rainfall had a positive and significant effect on the grain yield. It had a strong negative correlation with evaporation and wind speed. During the research period, among cultivars the highest accumulated GDD had observed in HHB-67 from emergence to physiological maturity. The higher accumulated HTU had consumed by 18th July and lowest by 28th June and the highest HTU were observed in HHB-67 from emergence to milking stage (except flag leaf stage, boot stage, dough stage and physiological maturity on 18th July). The Accumulated Heat use efficiency (HUE) was higher on 28th June treatment at 60 DAS. HHB-67 (0.61 g/m2 oC/day) possess higher HUE followed by PC-701 and RHB-223 (0.50 g/m2 oC/day).