Check the listing for details. Zinc Sulfate Granular Fertilizer - 5 Lbs.. Condition: New. Listed at 27.77 USD. Granular Zinc Sulfate can be used on trees, shrubs, berry bushes, and fruit trees to correct zinc deficiency, which can cause the following problems:Deformity of fruit and rosette on pecans"White bud" on corn"Little leaf" of peaches and grapes"Die back" on citrusApplication rate: For corn, peaches, and grapes: 1/2 lb./1000 sq. ft.For ornamentals, and other fruits and vegetables: 1/4 lb./1000 sq. ft.For citrus: 1/4 cup per small tree, 1/2 cup per medium tree, and 1 cup per mature citrus treeFor pecans:Trees up to 7 inches in diameter: use 1 3/4 lbs./inch of diameterTrees over 7 inches in diameter: 3 1/2 lbs./inch of diameter Contains: 31% Soluble Zinc (Zn) On Nov-15-16 at 10:03:18 PST, seller added the following information: Add a map to your own listings. FREE Trial !