Cauliflower - Discolouration
Symptoms
Older leaves are pale bluish green with purple discoloration. Especially the underside of leaves turns red.
Causes
Phosphorus deficiency on leaves
Nitrogen deficiency leads to red discoloration too, but in this case leaves are light green.
Cauliflower - Discolouration
Symptoms
Older leaves are pale bluish green with purple discoloration. Especially the underside of leaves turns red.
Causes
Phosphorus deficiency on leaves
Nitrogen deficiency leads to red discoloration too, but in this case leaves are light green.
Phosphorus deficiency made worse by
- Acidic or very alkaline (calcareaus) soils
- Low organic matter
- Cold or wet conditions
- Crops with a poorly developed root system
- Soils with low P reserves
- Soils with a high phosphate capacity
- Iron rich soils
Phosphorus is important for
- Early growth, especially for root development
- Increases vigor in shorter season crops especially in adverse conditions
- Improves marketable yield
Yara recommended fertilisers for Phosphorus deficiency
YaraVita MAGPHOS K
Cauliflower: 4 l/ha applied soon after transplanting. Water rate: 200 l/ha. Alternatively: 2 to 3 applications of 5 to 10 l/ha from stem extension/head development at 7 to 14 day intervals. Water rate: 200 l/ha.
Read more about YaraVita MAGPHOS K
