Effect of Foliar Application of Some Natural Compounds on Growth and Fruiting of Ruby Seedless Grapevines

This study was conducted to study the effects of various natural plant extracts, including 5% moringa, 2% fulvic acid, 2% chitosan, 5% turmeric extract, 5% aloe vera, and 2% seaweed extract, on several growth aspects, yield, and some physical and chemical characteristics of ruby seedless grapes at Assiut University. The study was conducted throughout two seasons, 2018 and 2019, grown in the experimental orchard of the Faculty of Agriculture. In this regard, turmeric extract, seaweed extract, and aloe vera were the best treatments, with several growth parameters being higher. For yield, the best treatments in this regard were chitosan, seaweed extract and fulvic acid. The results so far suggest that three applications of either 2% chitosan, 5% aloe vera, or 2% seaweed extract would be desirable.