Impact of Potassium Silicate Application and Pattern on Yield and Quality of Cowpea under Fertigation

Background and Objective: Sustainable production of quality legumes forage in sufficient quantities constitutes one of the greatest challenges facing breeders and producers. Two field experiments were performed during the two summer seasons of 2019 and 2020 in Wadi El-Natroun, El-Behaira Governorate, Egypt to study the effect of potassium silicate application and pattern of use on yield and quality of cowpea grown under sandy soil condition. Methodology: Each experiment is laid out in split-plot design with three replications. Four potassium rates were distributed in the main plot while pattern of potassium use were performed in the sub plots. Results: The obtained results showed that potassium silicate application on combined with pattern of use increase yield components as well as macronutrient uptake of cowpea grains. Conclusion: From the obtained results, it was revealed that potassium silicate is of great important for cowpea fertilization and its effect highly reflected by 5 L/fed with month of pattern.