Potassium deficiency - Strawberry

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Nutrients

Strawberry - Discolouration

Symptoms
As a first symptom margins of mature leaves turn brown and dry. The browning progresses inwardly between the veins.

Reasons
Potassium deficiency Potassium deficient leaves contain less than 0.5 % K. Magnesium deficiency and salt burn can produce similar symptoms.

Strawberry - Discolouration

Symptoms
As a first symptom margins of mature leaves turn brown and dry. The browning progresses inwardly between the veins. Almost at the same time the leaf base including the midrib and petiole darkens.

Reasons
Potassium deficiency Potassium deficient leaves contain less than 0.5 % K. Magnesium deficiency and salt burn can produce similar symptoms.

Strawberry - Chlorosis

Symptoms
As a first symptom margins of mature leaves turn brown and dry. Light and dark brown sunken spots spread over the leaf blade. Interveinal chlorosis occurs.

Reasons
Potassium Deficiency. Potassium deficient leaves contain less than 0.5 % K. Magnesium deficiency and salt burn can produce similar symptoms.

Strawberry - Chlorosis

Symptoms
As a first symptom margins of mature leaves turn brown and dry. Light and dark brown sunken spots spread over the leaf blade. Interveinal chlorosis occurs.

Reasons
Potassium Deficiency. Potassium deficient leaves contain less than 0.5 % K. Magnesium deficiency and salt burn can produce similar symptoms.

Strawberry - Discolouration

Symptoms
With severe K deficiency the petiole and the leaf tissue at the leaf base become necrotic. The area adjacent to the midrib shows irregular chlorosis.

Reasons
Severe potassium deficiency Potassium deficient leaves contain less than 0.5 % K. Magnesium deficiency and salt burn can produce similar symptoms.

Strawberry - Necrosis

Symptoms
As a first symptom margins of mature leaves turn brown and dry. Light and dark brown sunken spots spread over the leaf blade.

Reasons
Potassium Deficiency Potassium deficient leaves contain less than 0.5 % K. Magnesium deficiency and salt burn can produce similar symptoms.

Potassium deficiency made worse 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

Potassium is important for

Improved crop development
Increased yield
Improved fruit quality

Yara recommended fertilizers for Potassium

YaraVita FOLIAR POTASH

Strawberry (field grown): 5 l/ha at green bud. Water rate: 200-500 l/ha.

YaraTera KRISTA K PLUS

Strawberries (fertigated): Crop specific recipes for 2 tank (A & B tank) systems can be produced using the Yara Fertigation Plan, for more details contact your local Yara area manager.

Other recommended products

YaraTera KRISTA MKP

Strawberries (fertigated): Crop specific recipes for 2 tank (A & B tank) systems can be produced using the Yara Fertigation Plan, for more details contact your local Yara area manager.

YaraTera KRISTA SOP

Strawberries (fertigated): Crop specific recipes for 2 tank (A & B tank) systems can be produced using the Yara Fertigation Plan, for more details contact your local Yara area manager.

YaraTera KRISTALON BLUE LB

Strawberries (fertigated): Crop specific recipes for 2 tank (A & B tank) systems can be produced using the Yara Fertigation Plan, for more details contact your local Yara area manager.

YaraTera KRISTALON GREEN LB

Strawberry (fertigated): Crop specific recipes for 2 tank (A & B tank) systems can be produced for protected crops using the Yara Fertigation Plan, for more details contact your local Yara area manager.

YaraTera KRISTALON RED

Strawberries (fertigated): Crop specific recipes for 2 tank (A & B tank) systems can be produced using the Yara Fertigation Plan, for more details contact your local Yara area manager.