Document Type : Original Article
Author
Horticulture Department, Faculty Of Agriculture, Sohag University, Sohag, Egypt.
Abstract
“Ewaise” mango is the most delicious mango variety in Egypt. It is very popular. However, it suffers from low fruit yield. The shortage of yield may be due to the adverse effects of unfavorable environmental conditions. Mono-potassium phosphate, calcium, and amino acids are proven to improve these negative effects. During the 2020/2021 and 2021/2022 seasons, a study was conducted to investigate the impact of the application of 2% mono-potassium phosphate, 2000 ppm calcium, and 1000 ppm amino acids alone or in combination treatments on blooming characteristics, shoot length, leaf area, N, P, K, Fe, Mn, total chlorophylls, total carotenoids in the leaves, yield, as well as some physical and chemical characteristics of the fruits of “Ewaise” mango trees. The results showed that foliar application of 2% mono-potassium phosphate, 2000 ppm calcium, and 1000 ppm amino acids either individually or in combination significantly improves flowering, growth, nutrient levels (including N, P, K, Fe, and Mn), total chlorophylls, total carotenoids in the leaves, yield, and fruit quality, compared to a control treatment. In terms of the best order of application, using the 1000 ppm amino acids, 2% mono-potassium phosphate, and 2000 ppm calcium in descending order was crucial in achieving these positive outcomes. Combined applications of these materials were significantly more effective than using each material alone in improving the mentioned aspects. Specifically, carrying out four sprays (1st week of November, the 1st week of December, after the fruit set, and one month later) of 1000 ppm amino acids plus 2% mono-potassium phosphate plus 2000 ppm calcium yielded the best results in terms of yield and fruit quality of “Ewaise” mango trees.
Keywords
Main Subjects
)
View on SCiNiTO