Natural acidity improves soil water penetration. Dissolves salts to be leached below root zone. You use less so is costs less. Iron deficiency can be common in alkaline soils, resulting in chlorosis, the yellowing of leaves. Zinc - an essential component of plant enzymes, plays an important role in healthy plant growth.
Zinc deficiencies are common in Western states and result most often in decreased stem length.
Manganese - as with zinc, manganese is involved in the plant's growth process and together with iron, assists in chlorophyll production. It is important to add iron with manganese since a high manganese concentration can induce iron deficiency. Molybdenum - required by plants for the efficient utilization of nitrogen. A deficiency can result in a lack of vigor. Calcium - is a structural nutrient and an essential part of all cell walls and membranes.