Ali Deeb(1), Fahed Sahuny(2), Mahasen Tawakalna(3), and Yahya Yosef (1)*
(1) Horticulture Department, Faculty of Agriculture,Tishreen University, Lattakia, Syria.(2) Horticulture Department, Second College of Agriculture, Aleppo University, Aleppo, Syria.(3) Horticulture Department, General Commission for Scientific Agricultural Research, Damascus-Syria.(*Corrsponding author: En. Yahya Yosef . E-Mail yahya.yosof@gmail.com).
Received: 1/08/2020 Accepted: 21/09/2020
Abstract:The study has been worked out during the years 2019-2020 in (a village in Hawza / Tartous Governorate) in an orchard planted with May crest trees at the age of 9 years in order to study the effect of foliar nutrition with iron compounds (iron chelate Fe-EDTA 13% and aqueous ferrous sulfate Feso4,7H2o) and ascorbic acids Citric and salicylic in the flowering and fruiting of peach trees. Iron, ascorbic and citric acid were sprayed at a concentration of (500 mg / l) each, while salicylic acid was sprayed at a concentration of (150 mg / l), and it was used alone or in combination.-The results showed that foliar application with iron and antioxidants contributed to stimulating flowering and fruiting growth, stabilizing fruiting buds, reducing fruit loss, and increasing production and productivity in both seasons 2019-2020.- The treatment with aqueous ferrous sulfate, iron chelate and salicylic acid gave the best percentages for the initial decade, i.e. the best results for flowering and fruiting, as the two-year averages were (84.73-76.66-76.48) %, respectively, compared to (37.29).-The treatment with aqueous ferrous sulfate gave the best percentage for the final decade, i.e. the best result for flowering and fruiting, as the average of the two years came (83.97), while the control gave (28.37).- Treatment with ascorbic acid gave the best results in terms of production and productivity, as the average of the two seasons was (25.87) kg / tree and (1616.66) kg / dunum, compared to the lowest production and productivity (15.43-964.58). Peaches are considered a greedy plant for the element of iron, and it needs it in large quantities, and it is one of the plants most affected by the deficiency of this element and due to the importance of this plant and the increase in the need for good varieties of it, with attention to export and high economic value. To help get rid of the iron deficiency problem, the research aimed to study the effect of foliar spraying with iron, ascorbic acid, citric and salicylic acid on the flowering and fruiting of May crest trees.
Key words: peaches, foliar application, iron chelate, aqueous ferrous sulfate, ascorbic acid, citric acid, salicylic acid.
Full paper in Arabic: PDF