Effect of Foliar Spray of NPK, Borax, ZnSO\(_4\) & MgSO\(_4\) on Storage of Strawberry (Fragaria annanassa Duch.) cv. Winter Dawn

This study identified the synergistic effect of NPK, Borax, ZnSO4 and MgSO4 with different concentrations on the postharvest quality and shelf life of strawberry stored at ambient conditions. This study was conducted in completely randomized Block design. Strawberry fruits were treated with different concentration of NPK, Borax, ZnSO4 and MgSO4 and stored at ambient temperature for 4 days. Changes in fruit’s physiological loss of weight, firmness, total soluble solid, titrable acidity, and ascorbic acid were periodically recorded. The results indicated that the treatment T8 (NPK @0.5% + Borax @0.25% + Znso4 @0.25%+ Mgso4 @0.25%) significantly reduced the decrease of physiological loss of weight, total soluble solids, titrable acidity, ascorbic acid, reducing sugar, non- reducing sugar and total sugar content. The results showed that treatment T8 (NPK @0.5% + Borax @0.25% + Znso4 @0.25%+ Mgso4 @0.25%) is the most effective treatment for improving the postharvest quality and prolong the shelf life of strawberry when stored at ambient condition.