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Characterization and postharvest control of diseases of avocado Hass

Grant number: 15/01611-9
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): May 01, 2015
Effective date (End): April 30, 2016
Field of knowledge:Agronomical Sciences - Agronomy - Plant Health
Principal researcher:Ivan Herman Fischer
Grantee:Matheus Fróes de Moraes
Home Institution: Departamento de Descentralização do Desenvolvimento (APTA Regional). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). Campinas , SP, Brazil

Abstract

A major problem in the commercialization of avocados is the incidence of postharvest diseases, which coincides with the ripening of fruits. The main postharvest diseases are anthracnose (Colletotrichum gloeosporioides complex) and stem end rots (Lasiodiplodia theobromae, Fusicoccum spp. e Neofusicoccum spp.), called quiescent disease because infect developing fruit in the field and the symptoms expression in postharvest. Due to the lack of precise information on pathosystems and of satisfactory management technologies of postharvest diseases, this project aims to: (I) quantify the incidence of postharvest diseases in avocado 'Hass' produced in the state of São Paulo, characterizing the aggressiveness and susceptibility of major pathogens to fungicides azoxystrobin, difenoconazole, copper oxychloride and thiabendazole; (II) evaluate the effect of chemical and alternative products in the control of rots in postharvest performing physicochemical characterization in fruits. The fruits from different sources will be sampled in packinghouse located in Bauru and the experiments will be conducted in controlled environment in APTA Bauru.