- Apples
- Banana
- Barley
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- Broccoli
- Cabbage
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- Maize
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- Table Grape
- Tomato
- Wheat
- Wine Grape
Cabbage - Deformation
Symptoms
The most obvious symptom of calcium deficiency is "tip-burn", which means necrotic lesions on leaf tips and margins. The symptoms start on younger leaves.
With ongoing Ca deficiency necrosis progresses from tips and margins inwards.
If calcium deficiency occurs during early stage of development, growth is severely stunted and no heads are formed.
Reasons
Calcium deficiency on cabbage
Many soils contain enough calcium, but restricted Ca uptake leads to calcium deficiency. High content of ammonium, potassium or magnesium in the soil and water stress (deficiency or excess) induce calcium deficiency.
Calcium deficiency made worse by
- Acidic soils
- Sandy or light soils (leaching)
- Acid peat soils
- Soils rich in sodium
- Soils rich in aluminium
- Drought conditions
- Fruit high in nitrogen or potassium
- Large fruit
Calcium is important for
- Good root development
- Key role for crop quality
- Tolerance to biotic and abiotic stress
- Improved storage quality and shelf life