The Synergistic Effect of Spraying Some Plant Extracts with Some Macro and Micro Nutrients of Thompson Seedless Grapevines

Abstract

During 2012 and 2013 seasons, Thompson seedless grapevines were treated three times with turmeric, garlic and onion extracts each at 0.05 to 0.1% as well as Zn, Fe and Mn in chelated form at 0.05 % and Cu in sulphate form at 0.025 % and NPKMg each at 0.1% either applied singly or in all possible combinations. the study focused on the effect of these treatments on growth, vine nutritional status, yield and fruit quality. The results revealed that using turmeric extract was preferable than using the other two plant extracts (garlic and onion) in improving the leaf area, nutrients status, yield and fruit quality. In addition, spraying the four macronutrients surpassed the use of the four micronutrients in this respect. For promoting yield of Thompson seedless grapevines quantitively and qualititively ,it is advised to spray the vines with turmeric extract at 0.05% besides all nutrients namely, NPKMg each at 0.1% , Mn, Zn, Fe at 0.05 % and Cu at 0.025% , three times.