Vol. 8, Issue 12, Part M (2024)

This study was conducted at the Horticulture Research Centre, Pattharchatta, and the Post-Harvest Laboratory of the Department of Horticulture, College of Agriculture, G.B. Pant University of Agriculture and Technology, Pantnagar, from April to May 2021. The experiment utilized a Factorial Completely Randomized Design (FCRD) with two factors and included twelve treatments: Control (T₁), Calcium Nitrate at 0.5% (T₂), Calcium Nitrate at 1.0% (T₃), Putrescine at 100 ppm (T₄), Putrescine at 200 ppm (T₅), Putrescine at 300 ppm (T₆), Calcium Nitrate at 0.5% combined with Putrescine at 100 ppm (T₇), 200 ppm (T₈), and 300 ppm (T₉), and Calcium Nitrate at 1.0% combined with Putrescine at 100 ppm (T₁₀), 200 ppm (T₁₁), and 300 ppm (T₁₂). These treatments were tested across six storage intervals (0, 6, 12, 18, 24, and 30 days), with 12 treatment combinations replicated three times. After harvesting, the fruits were stored in a refrigerator for further analysis, during which parameters such as fruit weight, fruit diameter, TSS (total soluble solids) to acid ratio, reducing sugars, and non-reducing sugars were evaluated. Among the treatments, T₁₀ (Calcium Nitrate at 1.0% + Putrescine at 100 ppm) was most effective, followed by T₁₁ (Calcium Nitrate at 1.0% + Putrescine at 200 ppm), in minimizing fruit weight and diameter loss while maintaining the TSS to acid ratio and sugar content throughout the storage period.