Effect of spraying certain organic acids and micronutrients on yield and berries quality of Early Sweet grapevines under Upper Egypt conditions

Abdelaal, Ahmed Hassan; Abada, Mohamed Megawer; Saied, Hussein Hemdan; امين, ساره محمد

doi:10.21608/aujst.2024.334705.1145

Effect of spraying certain organic acids and micronutrients on yield and berries quality of Early Sweet grapevines under Upper Egypt conditions

Document Type : Original papers

Authors

¹ Hort. Dept. Fac. of Agric. Al-Azhar Univ. (Assiut branch)Egypt.

² Hort. Res. Instit. ARC, Giza, Egypt.

³ Department of Horticulture (Pomology), Faculty of Agriculture and Natural Resources, Aswan University

⁴ جامعه أسوان كلية الزراعة والموارد الطبيعية قسم البساتين

10.21608/aujst.2024.334705.1145

Abstract

This study was carried out during 2021, 2022 and 2023 seasons, on 14 years old Early Sweet grapevines grown on sandy soil of Luxor governorate to examine the effect of spraying some micronutrients form of Micromix (containing 6.0% Fe+ 3.0% Mn + 3.0% Zn + 1.5% Cu in chelated form) at 0.025 to 0.1% and /or any one of three organic acids (citric or ascorbic acid each at 500 ppm or salicylic acid at 50 ppm) on yield and berries quality of Early Sweet grapevines. Yield and some physical and chemical parameters of quality were remarkably improved due to spraying Micromix at 0025 to 0.1% and / or any one of three organic acids (citric acid at 500 ppm or ascorbic acid at 500 ppm or Salicylic acid at 50 ppm) compared to the control. Using any one of three organic acids was effective in enhancing yield and quality of berries more than Micromix. However, combined application of two compounds surpassed the application one mational alone. The best results with regard to yield and berries quality of Early Sweet grapevines grown under sandy soil conditions were observed due to spraying the vines three times with a mixture of Micromix at 0.1% and salicylic acid at 50 ppm.

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