Effect of Spraying Fenugreek and Licorice Root Extracts on Improving the Quality of Flame Seedless Grapes under Desert Conditions

E.S. Yaseen, Misa; Diab, Samir M.

doi:10.21608/asejaiqjsae.2024.361358

Effect of Spraying Fenugreek and Licorice Root Extracts on Improving the Quality of Flame Seedless Grapes under Desert Conditions

Document Type : Original Article

Authors

Pomology Unit, Plant Production Department, Desert Research Center, Egypt

10.21608/asejaiqjsae.2024.361358

Abstract

This experiment was carried out during the 2018 and 2019 seasons to study the effect of foliar spraying with plant extracts on yield and fruit quality as an alternative to gibberellic acid (GA₃)and/or ethephon treatments on 19-year-old “Flame Seedless” grapevines budded on “Freedom” rootstock. Grapevines were growing in sandy soil under a drip irrigation system on a private vineyard in Giza Governorate, Egypt. The grapevines were sprayed three times a year, the first at a cluster length of 10 cm, the second at a berry diameter of 7 mm, and the third at a berry diameter of 10 mm at rates of 5, 10, and 15 g/l of fenugreek and licorice root extracts. Control treatment (commercial practices sprayed with GA₃ and ethephon). The results showed that the most effective treatment was mixing fenugreek and licorice root extracts together, especially at high concentrations, which led to a significant increase and gave the highest value in most of the studied traits, vegetative growth, yield, and berries quality of Flame seedless grapevines. Finally, 10 g/l fenugreek plus 10 g/l licorice root extracts significantly improved yield and berries quality. The studied characteristics were not affected by increasing the extracts concentration from 10 g/l to 15 g/l. It could be recommended to use of natural plant extracts, 10 g/l fenugreek and 10 g/l licorice root extracts, can be used to improve the yield and berries color under desert conditions which delay ripening and reduce fruit coloration, especially in the colored varieties. These extracts, when applied in agricultural practices, are environmentally safe and we obtain some of them contain healthy fruits rather than industrial growth regulators.

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