Abstract
This study was conducted on Phoenix dactylifera L. Hellawi date palm trees in one of the private orchards in Al-Haritha district in the north of Basra governorate during the growing season 2021 to know the effect of foliar spraying with the antioxidant Glutathione (0, 50, 100 mg. l-1) and the butyrecin growth regulator at a concentration (0, 50, 100 mg. l-1) by three sprays four weeks after contracting, between one spray and another one month, on some physical, chemical and physiological characteristics of fruits, leaves and components of the date palm yield of the cultivar Al-Hellawi. The results showed that the treatments of spraying with Glutathione at a concentration of 100 mg. l-1 and spraying with butyrecin at a concentration of 100 mg. l-1 were significantly superior, by giving them the highest increase in the physical characteristics of fruits (fruit weight, fruit flesh weight, fruit size) in the Kallal and wet stages compared to the control treatment. It outperformed in increasing the rate of fruit set and the rate of fruit ripening and increasing the rate of b and the amount of the total yield compared to the comparison treatment.
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