Manganese is an essential micronutrient required by plants and lawns for various physiological processes. Manganese deficiency can occur when there is insufficient manganese available in the soil or when the soil pH is too high or too low. The symptoms of manganese deficiency can vary depending on the severity and duration of the deficiency.

In plants, manganese deficiency can lead to chlorosis (yellowing) of leaves, stunted growth, and reduced plant vigor. The chlorosis typically appears first on the younger leaves and progresses to the older leaves. In severe cases, the leaves may develop necrotic spots or margins, and the plant may eventually die. Manganese deficiency can also lead to decreased photosynthetic efficiency, leading to reduced plant growth and productivity.

In lawns, manganese deficiency can lead to yellowing or browning of grass blades, stunted growth, and reduced turf quality. The grass may appear sparse and weak, and the lawn may become susceptible to weed invasion and disease. Manganese deficiency can also affect the root development of grass, leading to decreased water and nutrient uptake.