In pastures with legumes and grasses, legumes can be expected to suffer more than grasses from low K levels. Potassium deficiency may also allow greater incidence of some diseases. Similar to K for most Alabama soils. May exhibit purple color similar to P. Deficiencies occur most readily on sandy, low CEC soils. Similar to Mg.
Deficiencies occur on sandy soils most often.
Sulfur accumulates in clay subsoil, therefore deficiencies are more common in the early part of the season. Sulfur deficiency may include yellowing of younger leaves. There is greater need for S fertilizer today because of increased use of P fertilizers that do not contain S and because there is less S air pollution. Recommendations for B are very crop specific. What is needed by one crop may be toxic to another.