Quality and Nutrient Content of Grapes as Influenced by Foliar Spray of Different Sources of Zinc

摘要

Field experiments were conducted in grape orchard (cv Dilkush) of three year old during 2015-16 and 2016-17 to assess the effect of different sources of zinc on quality and nutrients content of grape by using randomised block design with twenty treatments and three replications. The experimental results of the study indicated that among various sources of zinc, zinc metalosate at 0.150 per cent zinc level recorded significantly higher total soluble solids (17.49o Brix), total sugars (18.64%), nitrogen (1.74%), potassium (1.89%), sulphur (0.52%), zinc (47.00 mg kg-1) and reduced titratable acidity (0.19%) in the fruit compared to control (T₃) and other treatments but it was at par with the treatment T₁₈ which received zinc @ 0.150 per cent through Zn-EDTA. There was a non-significant difference was observed among the treatments with respect to calcium, magnesium, copper, iron, manganese and boron content of fruit.