Effect of spraying with Drin, Vegeamino and Ascorbic acid on some physical and chemical properties of date palm fruits (Phoenix dactylifera L.cv. Hillawi)

Abstract

This study was conducted in a private orchard at Abu El-Khasseb District, Basrah Governorate during the growing seasons of 2014 and 2015 to investigate the effect of foliar spray of some  environmental stress compounds of Vegeamino and Drin at concentrations of (2 and 4 ) ml.L-1  and Ascorbic Acid at concentrations (500 and 1000)mg.L-1  on some biochemical characters of date palm cv. Hillawi during the ripening stage of Khalal , Rutab  . Results showed that Ascorbic Acid treatment at 500 mg.L-1 recorded significant increases in fruit and flesh of the first season, fruit length and diameter of both seasons , moisture content of the first season , dry matter percentage of the second season , whereas Drin treatment at 4 ml.L-1 had significant increases in fruit dry matter percentage of the first season , total soluble solids of the second season, free amino acids at Rutab stage , soluble protein of fruit at Khalal stage . Control treatment had significant increases in fruit moisture content of the second season , total soluble solids ,soluble protein of leaf. Once and twice and trice sprays of trees with environmental stress compounds gave significant increases in most of the studied characters .