Phosphorus Deficiency vs. Potassium Deficiency vs. Healthy Plant - Oats

Symptom description

Plants with P deficiency are smaller than normal and show purple tints on their dark green leaves, especially on the middle of the leaf blade. K deficient leaves are even more stunted and their tips are scorched.

Made worst 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.

Important for

Better crop establishment. Improved early root development. Improved yield. Even crop maturation.

Cause description

P and K deficiency vs. optimum supply Spring cereals may show reddening/purpling of older leaves in cold weather. Root and stem damage or poor soil consolidation can cause similar symptoms, too.

Yara recommends

YaraVita MAGPHOS K

Cereals: 5 l/ha at tillering. Repeat at 10-14 day intervals if necessary. Also apply from ear emergence until the end of flowering (Zadok's G.S. 51 to 69). Water rate: 200 l/ha.

YaraVita MAIZE BOOST

Cereals: 5 l/ha at tillering. Repeat at 10 to 14 day intervals if necessary. Water rate: 200 l/ha.

Other recommended products (2)

YaraMila ACTYVA S

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YaraVita SENIPHOS

Cereals: 5 l/ha at tillering. Repeat at 10-14 day intervals if necessary. Water rate: 200 l/ha.