Effect Of Foliar Spraying With Organic Nutrients And Ascorbic Acid On Some Chemical Characteristics Of The Leaves And Fruits Of The Fruitful Date Palm Phoenix Dactylifera L. Barhi Cultivar

Abstract

This study was conducted in one of the private orchards affiliated to Basra Governorate - Al-Haritha District - Al-Mashab area during the 2020 growing season, with the aim of the effect of foliar spraying with organic nutrients and ascorbic acid and their interactions on some chemical properties of the leaves and fruits of the fruitful date palm variety Barhi. The experiment was carried out according to a Randomized Complete Blocks Design (RCBD) with three replications, where the first factor was the organic nutrients Unigreen at three concentrations (0, 2, 4) ml l-1, and Reef algastar at three concentrations (0,500, 1000) mg l-1 Ascorbic acid in three concentrations (0, 500, 1000) mg liter-1 for three sprays per season (before the emergence of pollen, after the appearance of the pollen and in the curry stage).The results of the study showed a significant superiority in the treatment of ascorbic spray with a concentration of 1000 mg L-1 and the organic nutrients Unigreen and Reef algastar at a concentration (4 ml L-1, 1000 mg L-1) respectively in the total chlorophyll content of leaves reached (26.83, 25.19, 26.66 )mg 100g-1 respectively, and the leaves content of the amino acid proline amounted to (17,807, 18.181, 18.598)%, respectively, and the percentage of membrane stability index was (93.77, 94.68, 95.26)%, respectively, while the comparison treatment recorded the highest percentage in The water content amounted to (63.262, 67,873, 65,669)%, respectively, and the concentration of 500 mg l-1 for ascorbic acid with the concentration of the two nutrients above, the highest percentage in the dry matter amounted to (37,676, 38.986, 40.37)%, respectively.