The characteristics of foliar nutrition Advantage of foliar nutrition a 4. Nutrients sprays are particularly used for fruit trees, especially in grass-grown orchards 1 5. Physiological disorders, such as bitter pit in apples, which results from Ca deficiency, can be alleviated to some extent by spraying the fruit with a solution of ca salt◼ 4.Nutrients sprays are particularly used for fruit trees, especially in grass-grown orchards. ◼ 5.Physiological disorders, such as “bitter pit” in apples, which results from Ca deficiency, can be alleviated to some extent by spraying the fruit with a solution of Ca salt. The characteristics of foliar nutrition Advantage of foliar nutrition