This study was conducted during two successive seasons (2012 and 2013) on Williams banana plants in a private banana orchard located at Badaway village, near Mansoura, Dakahlia Governorate. This study was performed on the first and second ratoons. Mother plants planted at (3*3.5) m apart, three suckers per hole.
During storage period under room conditions of temperature 33+2 and (R.H)63+2%,theresponse of pre-harvest treatments and chitosan 1.5% after harvest significantly reduced weight loss percentage (WLP) %, and decay %of banana fruits. As for, chemical characteristics measured, exhibited significant positive effects on fruits during storage periods in terms of reducing degradation of total chlorophyll contents (a+b), starch % ,accumulation of soluble solid contents (SSC%) and total soluble sugars (TSS) %.In this respect, it was indicated that the applications of gibberellic acid and salicylic acid at pre-harvest combined with Chitosan 1.5% after harvest were the best performance treatments to prolong the marketing life and maintaining the quality attributes of Williams banana fruits.