Postharvest diseases and physicochemical characteristics of mango.
Fischer I. H., Arruda M. C. de, Almeida A. M. de, Montes S. M. N. M., Jerônimo E. M., Simionato E. M. R. S., Bertani R. M. de A.
Author Affiliation: Agência Paulista de Tecnologia dos Agronegócios/APTA Regional Centro Oeste, Bauru, SP, Brazil.
Semina: Ciencias Agrárias (Londrina) 30 : 107-116
Abstract : A study was conducted to identify and quantify the postharvest diseases and to evaluate the physical and chemical characteristics of fruits of mango cultivars Haden, Tommy Atkins, Palmer and Keitt, treated or not with fungicide carbendazim. The fruits were harvested in a commercial orchard in President Prudente, Sao Paulo, Brazil, individualized and kept in a humid chamber for 24 h, remaining 8 days at 25±2°C and 70-80% RH. The incidence of diseases, firmness and loss of mass were evaluated periodically for 9 days. Before and end of the storage, the fruits were analysed for titratable acidity and soluble solids content. There was a high occurrence of rots in the 4 mango cultivars. Anthracnose (caused by Colletotrichum gloeosporioides [Glomerella cingulata]) was the most frequent disease, with practically 100% of incidence in the fruits. The Lasiodiplodia stem-end rot (caused by Lasiodiplodia theobromae [Botryodiplodia theobromae]) had the highest incidence in Tommy Atkins (68%), followed by Haden (36%). The treatment with carbendazim presented changeable efficiency in the control of the rots in function of mango cultivar. This treatment is recommended for the control of the stem-end in Haden and Palmer and also to reduce the severity of anthracnose in Haden and Keitt. The fungicide application did not influence the soluble solids and titratable acidity contents and ratio of the cultivars, except for Palmer that presented a minor ratio when treated with the fungicide. The ethephon application did not influence the ripening process of Haden.