MANGANESE

Manganese accelerates germination and maturity while increasing the availability of phosphorus (P) and calcium (Ca).

Photosynthesis

Manganese plays a vital role in photosynthesis by aiding in chlorophyll synthesis.

More Mn

Soybeans and wheat in particular require more Mn than many crops.

Deficiency Symptoms

Manganese is very immobile in plants, so deficiency symptoms appear first on younger leaves, with yellowing between the veins. Sometimes a series of brownish-black specks appear.

Imbalanced Nutrients

Although Mn deficiencies are often associated with high soil pH, they may result from an imbalance with other nutrients such as calcium (Ca), magnesium (Mg), and Iron (Fe).

Soils with Mn Deficiencies

Manganese deficiencies are most common in high organic matter soils and in those soils with naturally low Mn content and neutral to alkaline pH.

Manganese deficiency symptoms

Symptoms of deficiency can vary across crop species, but similarities exist for how nutrient insufficiency impacts plant tissue color and appearance. Nutrient deficiencies are commonly associated with the physical location on the plant (i.e., whether the symptoms are primarily observed on older versus newly formed plant tissue), but these symptoms can spread as the severity of the deficiency progresses.