Nutritional balance and physiological disorders in mango "Tommy Atkins".
Assis J. S. de, Silva D. J., Moraes P. L. D. de
Author Affiliation: Embrapa Semi-Arido, C.P. 23, CEP 56302-970, Petrolina, PE, Brazil.
Revista Brasileira de Fruticultura 26 : 326-329
Abstract : The effects of nutrient balance on the incidence of physiological disorders (fruit internal breakdown) in mango cv. Tommy Atkins grown in São Francisco River Valley, Bahia, Brazil, were studied. The N, K, Ca, Mg and B contents of skin, flesh and pit of ripe fruits with or without symptoms of physiological disorders were evaluated. Before dehydration, part of the flesh was analysed for total soluble solids (TSS) and total titratable acidity (TTA). The results indicated that high concentrations of Ca and Mg, and low ratios of N/Ca and K/Ca in the flesh and skin prevented the occurrence of physiological disorders in mango fruits. The nutrient concentration in the skin was more indicative of the presence of physiological disorders than the nutrient concentration in the flesh. The values of TSS and TSS/TTA ratio were much higher in fruits with symptoms than in fruits without symptoms due to the overripening of the flesh.