Potassium Deficiency - Barley

Symptom description

Leaves are blueish green with chlorotic tips and margins. Growth is reduced due to shortened internodes as deficiency becomes more severe.

Made worst by

Acidic soils (low pH). Sandy or light soils (leaching). Drought conditions. High rainfall (leaching). or heavy irrigation. Heavy clay (illite) soils. Soils with low K reserves. Magnesium rich soils.

Important for

Lusher, greener growth. Improved plant development. Increased yield and grain quality.

Cause description

Potassium deficiency Mild damage from herbicides may give similar symptoms.

Yara recommends

YaraVita FOLIAR POTASH

Cereals: 5 l/ha from early tillering to 2nd node detectable (Zadoks G.S. 21 to 32). Repeat at 10 to 14 day intervals between these growth stages as necessary. From 2nd node detectable onwards apply 5 l/ha, if necessary, up to the end of inflorescence (Zadoks G.S. 32 to 59). Water rate: 50 to 200 l/ha.

Other recommended products (4)

YaraMila ACTYVA S

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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.

YaraVita CROPLIFT PRO

Cereals: 2.5 kg/ha. Repeat at 10 to 14 day intervals as necessary. Avoid applications during flowering. Water rate: 200 l/ha.