Phosphorus deficiency-Cauliflower | Yara New Zealand

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Nutrients

Cauliflower - Discolouration

Symptoms
Older leaves are pale bluish green with purple discoloration. Especially the underside of leaves turns red.

Reasons
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.

Reasons
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 fertilizers for Phosphorus

YaraVita MAGPHOS K

YaraVita MAGPHOS K

Cauliflower: 4 l/ha applied at the 4 to 6 leaf stage soon after transplanting. Water rate: 30 to 200 l/ha. Also, when grown as a seed crop: 5 l/ha applied during the seed maturation phase. Water rate: 50 to 200 l/ha.

Read more about YaraVita MAGPHOS K

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: 75 to 200 l/ha.

Read more about YaraVita SENIPHOS

YaraMila COMPLEX

YaraMila COMPLEX

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Read more about YaraMila COMPLEX

Other recommended products

YaraVita CROPLIFT

Cauliflower: 5 kg/ha at the 4 to 6 leaf stage. Repeat as necessary at 7 to 10 day intervals. Water rate: 200 l/ha.

YaraVita CROPLIFT-K

Cauliflower: 5 kg/ha at the 4 to 6 leaf stage and as necessary at 7 to 10 day intervals. Water rate: 250 to 750 l/ha.

YaraMila 8-11-20

YaraTera KRISTA MKP