INFLUENCE OF SULPHURIC ACID, HUMIC ACID, SULPHUR AND IRRIGATION WATER ON GROWTH AND PRODUCTIVITY OF SUPERIOR SEEDLESS VINES GROWN UNDER SALINE CONDITIONS | ||||
| Journal of Plant Production | ||||
| Article 15, Volume 30, Issue 11, November 2005, Page 6951-6961 PDF (3.51 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2005.237754 | ||||
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| Authors | ||||
| A. H. Omar,1; A. H. Abdelall2 | ||||
| 1Viticul. Dept., Hort. Res. Instit., Agric. Res. Center, Giza, Egypt | ||||
| 2Hort. Dept., Fac. Agric., Alazhar Univ., Assiut Branch. | ||||
| Abstract | ||||
| Superior Seedless grapevines of 7 years old grown in a loamy sandy soil (E.Ce = 3.7 ds/m) and drip irrigated (E.Ciw = 2.3 ds/m) were subjected to sulphuric acid (2. 4 and 6 litre/feddan/2 weeks). humic acid (6. 9 and 12 litre/feddan divided into 4 dosages), sulphur (25, 50 and 100 kg/feddan applied in winter), irrigation water (30, 35 and 40 litre/vine at different intervals) and control. All treatments increased leaf area, length of mature portion of the cane, internode length & diameter; number & weight of clusters, berry weight & size and yield/vine. The best results were obtained as a result of increasing irrigation water up to 40 litre/vine at different intervals. Potassium was proportionally increased with increasing the rates of any treatment. However, CI and Na took a reverse trend. Total free amino acids were insignificantly affected by H2S04, humic acid or S, whereas increasing irrigation water up to 40 litre/vine at different intervals followed in the vineyard itself reduced total free amino acids. Increasing irrigation water up to 30-40 litre/vine at different intervals reduced proline. Leaves contained more total free amino acids as well as proline than shoots or roots. Humic acid and increasing irrigation water achieved more carbohydrate storage in the canes. It was concluded that raising irrigation water up to 40 litre/vine at different intervals was enough to reduce or counteract the harmful effects of salinity on Superior Seedless vines in that region. | ||||
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