Impact of foliar application of chelated nano copper on growth and yield production of Kamali grape cultivar

Abstract

This experiment was conducted during the 2024 season to study the effect of foliar application of chelated nano-copper, and their interaction with three number of spraying times on vegetative growth and yield of Kamali grape cultivar (Vitis vinifera L.). Chelated Nano-Copper was sprayed at four concentrations 0, 1, 1.5 and 2 g l^-1. Spraying three times per season, the first was before flowering, the second was after berry set, and the third sprayed were took place on version. The result showed the superiority of the spraying with 1.5 g l^-1 in traits of leaf area, number and weight clusters and the vine yield. In addition, spraying with 2 g l^-1 was significant increase in total chlorophyll content in the leaves, berries number and the weight of 100 berry. Furthermore, spraying three times achieved the best results for the leaf area, number and weight of berries, number and weight of cluster weight and grapevine yield. Interaction of foliar application of chelated nano-copper and number of spraying times treatments were achieved a significant increase in vegetative growth and the yield parameters compare to the control treatment especially spraying with 1.5 g l^-1 with three times sprayed gave the best results in this study.