The researchers studied how different pH levels of foliar spray and organic liquid fertilizer affected mango yield. They used various treatments on mango trees and measured fruit yield and quality. The results showed that using a foliar spray solution at pH 4.5 and applying 2% organic liquid fertilizer led to the highest fruit yield and quality. The interaction between pH levels, banana pseudostem sap, and micronutrients also played a significant role in increasing the number of fruits per panicle and overall fruit yield of mango trees.