Cauliflower - Deformation
Symptoms
Necrotic leaf margins and "clawlike" deformations at the youngest leaves. The curd dies off.
Causes
Calcium deficiency
Cauliflower - Die off
Symptoms
Symptoms of calcium deficiency start on the margins of young leaves. There cell tissue disperses, as seen on the photo. This symptom is called '"glasiness".
Causes
Incipient calcium deficiency
Cauliflower - Deformation
Symptoms
Symptoms of calcium deficiency start on young leaves. They develop necrotic lesions on leaf tips and margins. With ongoing Ca deficiency necrotic areas progress from tips and margins inwards.
Affected leaves are deformed because only necrotic areas of leaves stop growing.
Causes
Calcium deficiency on cauliflower
Most soils contain enough calcium, but restricted Ca uptake leads to calcium deficiency. High content of ammonium, potassium, magnesium or sodium in the soil and water stress (deficiency or excess) induce calcium deficiency.
Cauliflower - Deformation
Symptoms
Symptoms of calcium deficiency start on young leaves. They develop necrotic lesions on leaf tips and margins. With ongoing Ca-deficiency necrotic areas progress from tips and margins inwards.
Affected leaves are deformed.
Segments of the curd may be brown and glassy ("glassiness of cauliflower").
Causes
Calcium deficiency on cauliflower.
Many soils contain enough calcium, but restricted Ca uptake leads to calcium deficiency.
Cauliflower - Deformation
Symptoms
Symptoms of calcium deficiency start on younger leaves.
They develop necrotic lesions on leaf tips and margins ( "tip-burn"). With ongoing Ca-deficiency necrotic areas and a chlorotic border progress from tips and margins inwards.
Affected leaves are deformed and abraded.
Causes
Calcium deficiency on cauliflower
Most soils contain enough calcium, but restricted Ca uptake leads to calcium deficiency. High content of ammonium, potassium, magnesium or sodium 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
Yara recommended fertilisers for Calcium deficiency
YaraLiva TROPICOTE
Cauliflower: Apply 400 to 600 kg/ha in the base dressing (club root) or broadcast
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Cauliflower: 2 to 3 applications of 5 l/ha from stem extension/head development to harvest. Allow 10 to 14 days between applications. Water rate: 200 l/ha.
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