الفهرس 
Title: Enhancing the productivity of some mango cultivars VIA boron , calcium and amino acids
ContentsOnly 14 pages are availabe for public view
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Abstract
An experiment was conducted in a private orchard in Abo Galaeb region- Giza Egypt to evaluate the effect of foliar spray with different concentrations of Stopit® (calcium), Delfan Plus® (amino acids) and Boramin Ca® (calcium+ amino acids +boron on fruit set, yield and fruit quality of Eawis and Fagry Kelan mango trees. These two cultivars are suffering from a gradual decrease in yield by aging. The study was conducted on 8 years old uniform in shape mango trees of Eawis and Fagry Kelan cvs, grown in sandy soil, under drip irrigation system and received the common horticultural practices. Trees were sprayed with 1000, 1500 or 2000 ppm with Stopit® containing 16 % Ca W\V, Delfan Plus® containing 28.8 % Amino Acids W\V and Boramin Ca® containing 6.5%Amino Acid W\V, 10.4 % Cao W\V and 0.27 % B W\V. Trees were sprayed three times, at the beginning of flowering, full bloom and two weeks after setting. The results indicated that tree yield increased significantly with all treatments. The effect was best as concentration increased. Boramin Ca® was the most effective treatment for improving fruit set, fruit retention, and tree yield, followed by Stopit® and Delfan Plus® treatments. Treated Ewais cultivar produced higher fruit yield 67.9 ,52.2 and 30.5 % in the first season and 31.1, 21.4 and 12.5 % in the second season than the untreated control trees with Boramin Ca® , Stopit® and Delfan Plus® consequently . For Fagry Klan cultivar also all treatments increased fruit yield markedly than the untreated control trees as tree yield (kg/tree) was higher than the control by 35.5, 27.3 and 18.2 % in the first season and 37, 27.3 and 19.2 % in the second season respectively for the previously mentioned treatments. Delfan Plus® was the most effective one in increasing the vegetative growth