BEHAVIOUR OF MANFALOUTY POMEGRANATE TREES GROWN UNDER SANDY SOIL CONDITIONS TO SPRAYING SILICON AND SELENIUM | ||
| Fayoum Journal of Agricultural Research and Development | ||
| Article 14, Volume 31, Issue 2, July 2017, Pages 161-170 PDF (253.99 K) | ||
| Document Type: Research articles. | ||
| DOI: 10.21608/fjard.2017.191261 | ||
| Author | ||
| Essam M. A. Radwan | ||
| Hort. Dept., New Valley, Fac. of Agric., Assiut Univ., Egypt. | ||
| Abstract | ||
| This study was carried out during 2015 and 2016 seasons to examine the effect of spraying potassium silicate at 0.025 to 0.1% with or without the application of selenium at 50 ppm on fruit splitting %, fruit coloration %, yield and fruit quality of Manfalouty pomegranate trees grown in sandy soil. The trees received three sprays of silicon and selenium at the first of March and at two month intervals. Using potassium silicate at 0.025 to 0.1% with or without selenium at 50 ppm was very effective in improving the leaf area, N, P, K, total chlorophylls in the leaves, fruit retention%, gross and marketable yields and both physical and chemical characteristics of the fruits. Fruit splitting, fruit peel weight%, fruit peel thickness, total acidity% and total soluble tannins were remarkably reduced with using silicon alone in combination with selenium. The effect was depended on increasing concentrations of potassium silicate. Increasing concentrations of potassium silicate from 0.05 to 0.1% had negligible effect on the investigated parameters. For controlling fruit splitting and improving fruit coloration %, yield and fruit quality of Manfalouty pomegranate trees grown under sandy soil, it is suggested to use a mixture of potassium silicate at 0.05% plus selenium at 50 ppm three times at the first week of March and at two month intervals. | ||
| Keywords | ||
| Potassium silicate; Selenium; Manfalouty pomegranate; Fruit splitting; Fruit colouration; Yield and fruit quality | ||
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