Effects of spraying calcium nitrate on potassium, calcium and magnesium contents and quality of mango.
Li HuaDong, Bai TingYu, Zheng Yan, Lin Dian
Author Affiliation: Agriculture College, Hainan University, Haikou, Hainan 570228, China.
Journal of Northwest A & F University - Natural Science Edition 44 : 63-68
Abstract : Objective: The effects of spraying calcium nitrate on mango potassium, calcium and magnesium contents and quality were studied to provide basis for scientific calcium application. Method: A field trial was conducted to evaluate the effects of spraying calcium nitrate (Ca) at different concentrations (0.5, 1.5, 2.5, 3.5 g/L) on the contents of potassium, calcium, magnesium and quality of 'Tainung No 1' mango at different stages (before inducing flowering, young fruit stage, fruit expanding stage and 10 d before harvest). Result: Spraying calcium nitrate increased Ca contents in leaf, peel, pulp, and seed of mango, and had an antagonistic action for K and Mg in leaf. Compare with the control, spraying calcium nitrate increased the fruit sugar acid ratio because the acidity was reduced, improved vitamin C, and reduced the incidence during storage. It had no significant influence on contents of soluble solid and soluble sugars and yield. Conclusion: Spraying calcium could increase fruit quality and storability of mango while affect the contents of K and Mg in leaf.