Response of Spraying Calcium Silicate, Nano- Calcium, and Seaweed Extract on The Productivity and Nutritional Status of Autumn Royal Seedless Grapevines Grown in Minia

Document Type : Original Article

Authors

1 Viticulture Dept. Hort. Res. Instit ARC. Giza, Egypt

2 Central Lab. of Organic agriculture ARC, Giza, Egypt

Abstract

During 2021 and 2022 seasons, we tested the effects of spraying calcium silicate (0.05-0.2%), Nano-calcium (Kalmagbor compound; 0.025-0.1%), and seaweed extract 0.05-0.2%) on the productivity and nutritional status of Autumn Royal seedless grapevines grown in Minia governorate. Our findings indicate that the application of calcium silicate, nano-calcium, and seaweed extracts significantly enhanced various aspects of grapevine growth and development compared to the control treatment. These improvements included increased vegetative growth, improved vine nutritional status, higher yield and cluster weight, and favorable changes in berry physical and chemical properties. Furthermore, the observed positive effects were generally proportional to the increasing concentrations of these treatments. The most pronounced benefits were observed when applying calcium silicate, nano-calcium, and seaweed extracts in ascending order of application. However, the results showed no significant differences between the medium and higher concentrations of these compounds.The treatment that included three sprays of seaweed extract at 0.2% was responsible for obtaining the highest yield and best berry quality of Autumn Royal seedless grapevines.

Keywords

Horticulture Research Journal
Volume 3, Issue 1
March 2025
Pages 102-111

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