Among the sometimes-overlooked nutrients in the house apple orchard, calcium is vital in preventing disorders like bitter pit and cork area. Additionally, adequate calcium in the soil surrounding apple trees assists the harvested fruit shop for longer intervals. Feed the soil around apple trees as well as project a foliar spraying application, which is a more immediate way of getting the nutrient to calcium-stressed trees.
Examine the soil pH and calcium levels. Apples prefer slightly acidic soil, with a 6.2 to 6.5 pH level.
Rake any debris or debris from the bottom beneath the tree’s vertical branches, extending about five feet in all directions beyond this drip line.
Sprinkle 10 pounds of gypsum to add calcium to the soil. Concentrate on the soil containing the tree’s feeder roots, from the drip line to many feet beyond the outer branches. For younger and dwarf apple trees, consult package directions, as you will likely have to use less gypsum each tree.
Add additional layers of other amendments, if they are part of the annual feeding program. Nitrogen sources like blood meal and phosphorus amendments such as bone meal are common elements of a springtime apple tree feeding schedule.
Work the gypsum along with other amendments to the soil with a spade or hoe. Aim to get a thickness of 1 to 2 inches; that thickness will not hurt the branches, but will help accelerate the leeching of calcium from the gypsum to the soil.
Water that the drip line area greatly, beginning the calcium-leeching procedure.
Rake mulch back to place, topping old stuff with new mulch, if needed,
Repeat the feeding procedure every year in early spring.