Morphological and biochemical characteristics of ʽCrimson Seedlessʼ grape in response to basal defoliation with foliar spraying of potassium silicate and methionine

Elaidy, Ahmed Attia; Abd El-Khalek, Ahmed Fathy; El-kenawy, Mosaad Awad; Elnagar, Mohamed Shawky; Salama, Basma S.

doi:10.21608/jsaes.2025.373392.1131

	Morphological and biochemical characteristics of ʽCrimson Seedlessʼ grape in response to basal defoliation with foliar spraying of potassium silicate and methionine
Journal of Sustainable Agricultural and Environmental Sciences
Volume 4, Issue 1, March 2025, Page 57-64 PDF (445.2 K)
Document Type: Original research paper
DOI: 10.21608/jsaes.2025.373392.1131
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Authors
Ahmed Attia Elaidy¹; Ahmed Fathy Abd El-Khalek ¹; Mosaad Awad El-kenawy²; Mohamed Shawky Elnagar¹; Basma S. Salama
¹Horticulture Department, Faculty of Agriculture, Tanta University.
²Viticulture Department, Horticulture Research Institute, Agricultural Research Center, Giza.
Abstract
The current study was conducted during two consecutive seasons (2022 and 2023) on ʽCrimson Seedlessʼ grapevines to improve the vegetative growth traits, yield and fruit quality. The grapevines are grown in the experimental farm at El-Baramon station, Horticulture Research Institute, Mansoura, Dakahlia Governorate, Egypt. In both seasons the grapevines were subjected to T1) Control (sprayed with distilled water), T2) Leaf basal defoliation (LBD) after the berry set, T3) Foliar spray of methionine (M) at 500 ppm, T4) foliar spray of potassium silicate (PS) at 3%, T5) LBD + 500 ppm M, T6) LBD + 3% PS, T7) 500 ppm M + 3% PS and T8) LBD + 500 ppm M + 3% PS. Results indicated that, either individually or combined had a significant effect on morphological and biochemical characteristics as compared to the control in both seasons. Also, the combined applications were the most effective than the individual applications, especially the application of LBD + 3% PS + 500 ppm M, which significantly improved the vegetative growth aspects, physical properties of clusters, yield and enhancing SSC and total anthocyanins.
Keywords
Crimson Seedless; leaf basal defoliation; potassium silicate; methionine; anthocyanins


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