Effect of organic calcium uptake and biostimulants during integrated nutrient management (INM) cultivation of kiwifruit cv. ‘Hayward’

Foliar application with calcium (Ca) fertilizers improves quality and flesh firmness of kiwifruit affects the mineral composition leaves fruits. The impact preharvest foliar sprays, using a commercial fertilizer organic Ca content in combination an integrated nutrient management (INM) biostimulants was assessed for properties nutritional status kiwi cv. ‘Hayward’ over 2-year period. Fruit increased under all applications. In addition, treatments resulted elevated dry mass content, which is common index. leaves, concentrations N, P, K B were higher compared to control. fruits, B, increased, contrast Mg, reduced. Mn, Zn, Fe Cu not affected either or Application Ca-fertilizers led firmness, total soluble solids, acidity, percentage. addition biostimulant THEOFAST elongation stigmas area