Manganese (Mn)
A micronutrient that plays a role in photosynthesis, nitrogen metabolism, and root function. Manganese deficiency looks similar to iron deficiency — interveinal chlorosis — but is most common in high-pH soils and sandy soils. Bermuda and St. Augustine are particularly susceptible.
Manganese works alongside iron in photosynthesis and is required by numerous plant enzymes. Like iron, it becomes less available to plants as soil pH rises above 6.5.
Deficiency signs: Striped or mottled yellowing (interveinal chlorosis) in new growth. Often confused with iron deficiency. A soil or tissue test can differentiate the two.
Application: Manganese sulfate applied as a foliar spray or soil drench. Chelated manganese products work well in high-pH soils.
More on Micronutrients
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