Postharvest hot water treatment for disease control in Kesar mango fruits.
Waskar D. P., Gaikwad R. S.
Author Affiliation: Department of Horticulture, Mahatma Phule Krishi Vidyapeeth, Rahuri - 413 722, India.
Indian Journal of Agricultural Research 39 : 186-191
Abstract : The effects of postharvest hot water treatment on the quality of the fruits of mango (cv. Kesar) grown in an arid zone were studied. Mature fruits were subjected to hot water treatment at 52°C for 10 minutes singly or in combination with dipping of fruits in Bavistin [carbendazim] (0.1%) and captan (0.2%). The fruits were then packed in corrugated fibre board box and stored at room temperature (28.12 to 36.18°C and 46.18-71.25% relative humidity) or in a cool chamber (21.47-27.10°C and 91-95% relative humidity). Hot water treatment combined with Bavistin (0.1%) was superior in controlling the incidence of anthracnose and stem-end rot. The shelf life of fruits could be extended for more than 28 days when given hot water treatment coupled with fungicide treatment and stored in cool chamber. However, the shelf life lasted only 21 days when the fruits were subjected to hot water treatment, treated with Bavistin and stored at room temperature, and only 17 days when untreated and stored at room temperature. Hot water treatment coupled with fungicide treatment resulted in lower physiological weight loss and high organoleptic score when stored in a cool chamber than at room temperature. The untreated (control) fruits were infected with Colletotrichum gloeosporioides [Glomerella cingulata] and Diplodia natalensis [Botryodiplodia theobromae].