Healthy apple trees need calcium.
Growing apple trees requires vigilant attention to the growing conditions, including soil management. If apple trees do not receive enough calcium, you may notice low-quality fruit and problems such as "cork spot" appearing on the apples. Foliar applications of fertilizers containing calcium are generally the most effective means of improving calcium deficiencies in apple trees. In addition to this treatment, wait until the autumn and add gypsum to soil around an apple tree. Gypsum -- calcium sulfate -- is effective for improving calcium levels.
Instructions
1. Mix the calcium chloride spray by combining 2 tablespoons of calcium chloride with 1 gallon of water. Spray an apple tree generously approximately one month after the tree blossoms. Apply a minimum of three more applications every two weeks during the remainder of the growing season.
2. Scatter 10 pounds of granular gypsum evenly over the entire surface of the ground from about 2 inches away from the tree out to the drip line.
3. Water the entire area generously after applying the gypsum. Watering the soil will help the gypsum absorb down into the tree roots.
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