Vol. 9, Issue 5, Part M (2025)

The present investigation was to find effective pre harvest spray combination to maintain post-harvest quality and shelf life of grapes cv. Manjri Naveen. The pre harvest sprays viz., T₁: NAA 100 ppm; T₂: Salicylic acid 4 mM; T₃: Ca(NO3)2 (1%) T₄: B. amyloliquefaciens (10 ml/L); T₅: NAA 100 ppm + Ca(NO3)2 (1%); T₆: NAA 100 ppm + B. amyloliquefaciens (10 ml/L); T₇: Salicylic acid 4 mM + Ca(NO3)2 (1%); T₈: Salicylic acid 4 mM + B. amyloliquefaciens (10 ml/L); T₉: Ca(NO3)2 (1%) + B amyloliquefaciens (10 ml/L); T₁₀: NAA 100 ppm + Ca(NO3)2 (1%) + B. amyloliquefaciens (10 ml/L); T₁₁: Salicylic acid 4 mM + Ca(NO3)2 (1%) + B. amyloliquefaciens (10 ml/L); T₁₂: Control; were sprayed on the stipulated day, harvested, packed in CFB boxes, and stored under refrigerated condition (5±1˚C and 85-90% RH). Grape bunches sprayed with T₁₀ recorded minimum PLW (2.76%), berry drop (1.96%), maximum firmness (26.97 N), and overall acceptability score (8.46) bunches sprayed with salicylic acid 4 mM + Ca(NO3)2 (1%) + B. amyloliquefaciens (10 ml/L) recorded maximum rachis freshness (8.16) and minimum disease score (0.50). These treatments were found effective in maintaining 5 days more shelf life compared to the control.