Effects of nutrients and growth substances on internal breakdown of Sensation mango fruits.
Hermoso J. M., Guirado E., Gómez R., Castilla A., Velasco R., Farré J. M.
Author Affiliation: Estación Experimental La Mayora, Algarrobo-Costa, 29750 Málaga, Spain.
: 92-99
Abstract : Leaf application of CaCl2, Ca-EDTA, KCl or MgCl2 did not affect mesocarp Ca content, internal breakdown or stem-end cavity in Sensation mangoes grown in Spain. Leaf Ca increased temporarily after 6 applications of CaCl2, but decreased to control levels by the end of the season. Single applications of GA3 or 3,5,6-TPA [3,5,6-TBA ?], with or without 3 applications of Ca-EDTA, did not influence leaf Ca, internal breakdown or stem-end cavity. Ca-EDTA in vaseline, applied at the base of the fruit peduncle, significantly decreased internal breakdown and stem-end cavity. It also reduced K content of bark and wood of the peduncle under and outside the treated area. Zn, B and Cu injected into the trunk in spring slightly increased internal breakdown and stem-end cavity. Only leaf B levels increased after the injections. Mean internal breakdown and stem-end cavity were negatively correlated with mean fruit size and mean shoot growth of the tree.