Response of Mabrouka mango trees grown in sandy soil to potassium fertilization.
Fouad A. A., Khalil F. M., Ahmed A. E. M., Abdalla A. S.
Author Affiliation: Hort. Res. Dept., National Res. Center, Dokki, Egypt.
Annals of Agricultural Science, Moshtohor 41 : 251-259
Abstract : The effects of K fertilizer on the performance of mango (18-year-old budded Mabrouka trees) were studied at West Samalout, Minia Governorate, Egypt, during 2000 and 2001. Potassium sulfate at 125, 250, 500 or 1000 g per tree was supplied as a single treatment, or in 2, 3 or 4 equal splits per year. Increasing the K fertilizer rate and the number of applications generally increased the leaf area, shoot length, leaf K content, fruit retention, yield, fruit weight and size, total soluble solid content, total sugar content, and ascorbic acid content, but reduced the N and P contents of leaves, fibre percentage, and total acidity. The application of 500 g K per tree in 3 equal splits (at the onset of the spring growth cycle, just after fruit set, and 21 days later) was the most economical treatment with regard to fruit yield and quality parameters.