Uptake of Fungicides from Post-harvest treatment and their Persistence in Ripening Mango Fruits

The uptake and persistence of carbendazim and captan residues in whole mango fruits and fruit pulp was studied following post harvest dip treatments of the fruits in fungicide solutions and their subsequent storage at room temperature (25 + 3°C) and at lower temperature (15+1°C). Carbendazim residues persisted throughout the ripening period of the fruits and dissipated with a half life of 19 d in the whole fruit at room temperature and about 40 d at lower temperature. Captan residues on the other hand persisted for less than 15 d with a half life of only 2.3 d at room temperature and for less than 30 d at lower temperature, with a half life of 2.5 days. Carbendazim was not found suitable to be used as a dip treatment for control of various post harvest diseases of mango from the point of the persistence pattern of its residues.