Abiotic stress reduces yield and quality. Biotic stress is always preceded by abiotic stress factors.
A healthy soil supports optimum soil biology and plant growth. Imbalances in soil chemistry, soil biology, or plant physiology lead to reduced soil health.
Too often, calcium is seen merely as a means to adjust soil pH, or as a soil amendment to aid in water movement in soils. While addressing these issues is important, it will not always translate into adequate plant calcium nutrition. Too often we correct soil PH only to find that tissue levels of calcium are inadequate, or that fruit storability is poor. Water and soil amending with calcium is different than supplying the plant with available calcium.