Relation of Spraying Silicon with Fruiting of Keitte Mango Trees Growing Under Upper Egypt Conditions

摘要

This study was carried out during 2013 and 2014 seasons for examining the effect of spraying potassium silicate at 0.05 to 0.2 % applied once, twice or thrice on fruiting of Keitte mango trees. Foliar application of potassium silicate once, twice or thrice at 0.05 to 0.2% was accompanied with enhancing all growth characters, leaf pigments, N, P and K in the leaves, initial fruit setting %, fruit retention %, yield and fruit quality rather than non- application. The promotion was materially associated with increasing concentrations and frequencies of potassium silicate. A slight promotion on such parameters was observed with increasing concentrations form 0.1 to 0.2% and frequencies from twice to thrice. Carrying out two sprays of 0.1% potassium silicate at growth start and just after fruit setting was responsible for improving yield and fruit quality of Keitte mango trees grown under Upper Egypt condition.