Trees, Shrubs & Vines:
Spread 1 lb per 2″ of trunk diameter around the base outwards to the drip line, mix into soil surface and water in well. For grapes, apply ½-1 lb around each plant and thoroughly mix into soil. For new trees, prepare transplant hole and mix 4-8 oz with the backfill soil. Use the amended soil to fill in around the new tree and water in well.
Apply 75-150 lbs per acre initially, followed by annual maintenance applications of 50-100 lbs per acre or according to specific crop needs and soil quality.