Vermiwash improves of vegetative growth, nutrients status, yield and quality of Red Roomy grapes

AbdulBasser, A. R.; Abd EL-all, E. E. H.

doi:10.21608/svuijas.2025.361625.1441

Vermiwash improves of vegetative growth, nutrients status, yield and quality of Red Roomy grapes

Document Type : Original Article

Authors

¹ Pomology, Horticulture Department, Faculty of Agriculture, Sohag University, Sohag , Egypt

² Horticulture Department, Faculty of Agriculture, Sohag University, Sohag, Egypt

10.21608/svuijas.2025.361625.1441

Abstract

The Red Roomy grapevine (Vitis vinifera L.) is susceptible to low quality clusters and berries such as shot berries, which negatively affect its marketability. Bio-stimulants, including vermiwash, have been investigated as potential remedies for these issues. This study aimed to evaluate the effects of vermiwash on Red Roomy grapevines grown in Minia Governorate, Egypt, during the 2023 and 2024 growing seasons. Vermiwash was applied at concentrations of 5%, 7.5%, and 10%, either twice or three times during the growing period. The results demonstrated that increasing the application frequency from twice to three times and the concentration from 5% to 10% led to notable improvements in vine growth, leaf nutrient content, yield quantity, and berries quality. However, the additional benefits observed with higher concentrations and application frequencies were generally modest. Based on the findings, applying vermiwash at a concentration of 7.5% three times during the growing season is recommended as the optimal approach for enhancing the yield and quality of Red Roomy grape berries in Minia Governorate, Egypt.

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