Impact of Foliar Spraying by Using Some Stimulative Substances on Growth, Green Pods, Dry Seed Yield, Its Components and Some Chemical Constituents of Pea Plants (Pisum sativum L.) under High Temperature Stress Conditions

This experiment was carried out during the two winter seasons of 2020/2021 and 2021/2022 at Qaha Vegetable Research Farm (Qalubia Governorate), Horticulture Research Institute, Agriculture Research Center (A. R. C.), Egypt. The objectives of this study were to investigate the effect of foliar spraying with some stimulative substances i.e. Green Miracle at the rate of 3 cm3 / L, Kaolin (Aluminum silicate) at the rate of 20 g/ L, Selenium element at the rate of 12 mg /L, Megacal Hort at the rate of 2.5 cm3/L, Super Grow Hortic at the rate of 0.75 cm3 /L and High Harvest at the rate of 0.75 cm3/L beside the control treatment (spraying with tap water) on vegetative growth, green pods, dry seed yield and its components as well as seed quality of pea Master B cv. under high temperature stress conditions. The experimental design was a randomized complete block containing seven treatments with three replicates. Seeds of peas were sown in the 2nd week of September during the two winter growing seasons. The results showed that, the most estimated parameters were significantly affected with all tested treatments as foliar applications; the superiority effect of the treatments was recorded by using kaolin (Aluminum silicate) followed by selenium element and green miracle which led to obtain the highest significant increase in all the previous studied traits i.e. the vegetative growth, green pods yield, dry seed yield and its components as well as seed quality under high temperature stress conditions. The superior treatment; kaolin at the rate of 20 g/ L increased green pod yield by 36.8 and 33.6 % and enhanced dry seed yield /fed by 34.2 and 32.3 % over the control treatment (the untreated plants) in the two winter seasons, respectively.