Articles
EFFECTS OF CALCIUM SPRAYS ON STORAGE QUALITY OF ‘ŠAMPION’ APPLES
Article number
448_5
Pages
59 – 66
Language
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.
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.
Authors
K. Tomala
Keywords
Apple, calcium, bitterpitt, ethylene, respiration
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