Effect of novel treatments on post harvest diseases of mango (Mangifera indica L.).
Kumar M. K. P., Nargund V. B., Basha C. R. J.
Author Affiliation: Department of Plant Pathology, College of Agriculture, UAS, GKVK, Bangalore - 560 065, India.
Mysore Journal of Agricultural Sciences 39 : 474-479
Abstract : A study was undertaken to investigate the effect of novel treatments (plant extracts and oils) on postharvest diseases (including Alternaria rot or black rot caused by Alternaria alternata and black mould rot caused by Aspergillus niger) of mango cv. Neeleshan. The treatments comprised dipping in 0.1% carbendazim for 10 minutes, dipping in hot 0.1% carbendazim at 50±1°C for 10 minutes, dipping in 5% ocimum leaf extract solution, dipping in 100% sunflower oil, dipping in 100% hydrogenated oil, dipping in 100% castor oil, dipping in 5% salt solution for 10 minutes, dipping in biological control agent (Trichoderma sp.) solution at 5×105 cfu/ml for 10 minutes, hot water treatment at 52±1°C for 15 minutes, and control (untreated). The fruits of Neeleshan showed the least percentage disease index of 14.66% in hot carbendazim treatment, followed by carbendazim (17.33%), hot water (19.33%), ocimum leaf extract (21.33%), salt solution (26.00%) and castor oil (26.00), on the 15th day of storage. The least total titratable acidity (TTA) and physiological loss in weight (PLW) and the highest total soluble solids (TSS) content were recorded in the same treatment. The untreated fruits showed the maximum TTA (0.41%) and PLW (21.4%) and the least TSS of 14.50% on the 15th day of storage.