Improving Washington Navel Orange Trees Productivity by Foliar Spray with Calcium Chloride, Calcium Nitrate and Calcium Chelate

Document Type : Original Article

Authors

1 Department of Horticultural Crops Technology, National Research Center, Dokki, Giza, Egypt

2 Department 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

Catrina: The International Journal of Environmental Sciences
Volume 2, Issue 1
January 2007
Pages 45-49

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