Foliar Calcium Sprays for Apples

Calcium (Ca) is an important nutrient element, which can affect apple quality after harvest. Ca deficiency expresses itself in the form of cork spot, which develop primarily during the early part of the growing season, bitter pit, which develops during the latter part of the growing season, and senescent breakdown, which forms during and after storage. Ca may affect disease sensitivity during the growing season, and may affect the development of scald and decay during storage. All of these disorders result in nonmarketable fruit.