Nutrients

N Nitrogen
P Phosphorus
K Potassium
Mg Magnesium
Ca Calcium
S Sulphur
B Boron
Cu Copper
Fe Iron
Mn Manganese
Mo Molybdenum
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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

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

Other recommended products

YaraMila COMPLEX
YaraMila COMPLEX
Cauliflower: 875 to 1250 kg/ha as a base dressing
YaraVita CROPLIFT PRO
YaraVita CROPLIFT PRO
Cauliflower: 2.5 to 5 kg/ha. Repeat at 10 to 14 day intervals as necessary. Water rate: 200 l/ha.
YaraVita SENIPHOS
YaraVita SENIPHOS
Cauliflower: 2 to 3 applications of 10 l/ha from stem extension/head development at 7 to 14 day intervals. Water rate: 200 l/ha