Effect of some pre-harvest treatments on yield and fruit quality of "Swelling" peach trees [electronic resource]

Includes bibliographic reference

This study was carried out during the two successive seasons of 2016 and 2017 in order to study the effect of
some pre-harvest treatments. i.e. ascorbic acid (AsA), citric acid (CiA), salicylic acid (SA) each at (400 and 600
ppm), gibberellic acid (GA3) at (50 and 100 ppm), and calcium chloride (CaCl2) at (1and2%(w/v)) on the yield
and fruit quality of nine years old Swelling peach trees (Prunuspersica L.) growing in sandy soil,under drip
irrigation system. Results showed that GA3 at 100 ppm and CaCl2 at 2 % gave the highest values of total yield,also
GA3 at 100 ppm significantly increased fruit weight, size and fruit firmness as compared with other treatments in
both seasons. Both AsA and CiA at 600 ppm caused the highest increase in TSS % ,total sugars andanthocyanin
contents, while both AsA at 400 and 600 ppm and CiA at 600 ppm were caused increasing in fruit TSS/ acid ratio
in both seasons. Meanwhile, GA3 at 100 ppmsignificantly increased fruit acidity, chlorophyll a and b contents as
compared with the other treatments. Generally, it could be concluded that, gibberellic, salicylic acids and calcium
chloride markedly increased yield, fruit firmness and fruit chlorophyll a and b content as compared with all other
treatments.

Summary in Arabic