Manganese deficiency (plant)

Manganese deficiency on a rose

Manganese (Mn) deficiency is a plant disorder that is often confused with, and occurs with, iron deficiency. Most common in poorly drained soils, also where organic matter levels are high. Manganese may be unavailable to plants where pH is high.

Affected plants include onion, apple, peas, French beans, cherry and raspberry, and symptoms include yellowing of leaves with smallest leaf veins remaining green to produce a ‘chequered’ effect. The plant may seem to grow away from the problem so that younger leaves may appear to be unaffected. Brown spots may appear on leaf surfaces, and severely affected leaves turn brown and wither.

Prevention can be achieved by improving soil structure. Do not over-lime.

Plant nutrition / Fertilizer

Imbalances	Boron deficiency Calcium deficiency Iron deficiency Magnesium deficiency Manganese deficiency Nitrogen deficiency Phosphorus deficiency Potassium deficiency Zinc deficiency Micronutrient deficiency Chlorosis Fertilizer burn

Assimilation	Nitrogen assimilation Phosphorus assimilation Sulfur assimilation Microbial assistance Photorespiration

Methods	Fertigation Fertilizer tree Green manure Hoagland solution Hydroponic dosers Living mulch Nutrient budgeting Nutrient management Organic fertilizer Plant tissue test

Miscellaneous	Soil fertility Mineral matter in plants Nutrient pollution Soil pH Agrobiology

Related concepts	Algal nutrient solutions

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