ISHS Acta Horticulturae 448: III International Symposium on Mineral Nutrition of Deciduous Fruit Trees
EFFECTS OF CALCIUM SPRAYS ON STORAGE QUALITY OF ‘ŠAMPION’ APPLES |
| Author: | K. Tomala |
| Keywords: | Apple, calcium, bitterpitt, ethylene, respiration |
| Abstract:
Spraying trees with calcium compounds significantly decreased internal ethylene, reduced starch degradation and usually increased flesh firmness. All kinds of calcium sprays resulted in an increase of fruit calcium content; the most effective was Wuxal Calcium. As a result of this, fruit K:Ca ratio decreased and incidence of bitter pit and of internal break-down were significantly reduced. Calcium chloride spray applications, especially in early season, may damage foliage and fruitlets. Three sprays of Wuxal Calcium at an early stage + three sprays of calcium chloride at later dates were as effective as six sprays of Wuxal Calcium and did not cause any leaf or fruit injury. | |
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