Improving Washington Navel Orange Trees Productivity by Foliar Spray with Calcium Chloride, Calcium Nitrate and Calcium Chelate | ||
| Catrina: The International Journal of Environmental Sciences | ||
| Article 6, Volume 2, Issue 1, January 2007, Pages 45-49 PDF (194.28 K) | ||
| Document Type: Original Article | ||
| Authors | ||
| Mohamed El Sheikh1; Nagwa Zaeid2; Salwa Khafagy* 2 | ||
| 1Department of Horticultural Crops Technology, National Research Center, Dokki, Giza, Egypt | ||
| 2Department of Fruit Research, National Research Center, Dokki, Giza, Egypt | ||
| Abstract | ||
| Nine years old Washington Navel Orange Trees grow on clayey soil at Ashmoun District, AlMenoufya Governorate, Egypt; were sprayed with calcium chloride at 1, 2 and 3%, calcium nitrate at 1, 2 and 3% and calcium chelate at 1000, 2000 and 3000ppm at 3 spraying dates; 15th of April, 15th of June and 15th of August. Results indicated that spraying nutrients increased N, P, K and Ca content in leaves compared with the untreated trees. Meanwhile, yield as number of fruits and number of fruits/tree were significantly improved by spraying different nutrient especially when sprayed with calcium nitrate or calcium chloride at 3%. Creasing and fruit cracking/trees were significantly decreased by spraying calcium chloride at 3%. However fruit quality (physical and chemical characteristics) were significantly improved by spraying different nutrient treatments at higher concentrations. | ||
| Keywords | ||
| Washington Navel orange; foliar spray; Mineral content; yield and fruit quality; creasing; fruit cracking | ||
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