Symptoms
Magnesium deficiency symptoms start on older leaves of the plants. Marginal yellowing is followed by the occurence of necrotic spots within the chlorotic areas.
The petioles can show a bluish-purple mottling ('Blue disease").
Reasons
Magnesium deficiency.
Potassium deficiency also shows chlorosis on the leaves, becoming necrotic later, but the necrosis starts from the leaf tips and does not form spots within the intercostal area of the leaves.
Manganese deficiency shows similar symptoms to Mg deficiency, but the symptoms start on younger leaves and there is no band around the midrib that remains green.
Banana - Chlorosis
Symptoms
Magnesium deficiency symptoms start on older leaves of the plants. Marginal yellowing is followed by the occurence of necrotic spots within the chlorotic areas.
The petioles can show a bluish-purple mottling ('Blue disease").
Reasons
Magnesium deficiency.
Potassium deficiency also shows chlorosis on the leaves, becoming necrotic later, but the necrosis starts from the leaf tips and does not form spots within the intercostal area of the leaves.
Manganese deficiency shows similar symptoms to Mg deficiency, but the symptoms start on younger leaves and there is no band around the midrib that remains green.
Banana - Chlorosis
Symptoms
Magnesium deficiency symptoms start on older leaves of the plants. Marginal yellowing is followed by the occurence of necrotic spots within the chlorotic areas.
The petioles can show a bluish-purple mottling ('Blue disease").
Reasons
Magnesium deficiency.
Potassium deficiency also shows chlorosis on the leaves, becoming necrotic later, but the necrosis starts from the leaf tips and does not form spots within the intercostal area of the leaves.
Manganese deficiency shows similar symptoms to Mg deficiency, but the symptoms start on younger leaves and there is no band around the midrib that remains green.
Banana - Chlorosis
Symptoms
Magnesium deficiency symptoms start on older leaves of the plants. Marginal yellowing is followed by the occurence of necrotic spots within the chlorotic areas.
The petioles can show a bluish-purple mottling ('Blue disease").
Reasons
Magnesium deficiency.
Potassium deficiency also shows chlorosis on the leaves, becoming necrotic later, but the necrosis starts from the leaf tips and does not form spots within the intercostal area of the leaves.
Manganese deficiency shows similar symptoms to Mg deficiency, but the symptoms start on younger leaves and there is no band around the midrib that remains green.
Banana - Chlorosis
Symptoms
Magnesium deficiency symptoms start on older leaves of the plants. Marginal yellowing is followed by the occurence of necrotic spots within the chlorotic areas.
The petioles can show a bluish-purple mottling ('Blue disease").
Reasons
Magnesium deficiency.
Potassium deficiency also shows chlorosis on the leaves, becoming necrotic later, but the necrosis starts from the leaf tips and does not form spots within the intercostal area of the leaves.
Manganese deficiency shows similar symptoms to Mg deficiency, but the symptoms start on younger leaves and there is no band around the midrib that remains green.
Magnesium deficiency made worse by
Sandy soils
Acidic soils
Potassium rich soils
Soils receiving high potash applications
Cold wet periods
Magnesium is important for
Chlorophyll production and metabolic activator for carbohydrates, fats and proteins