Strawberry - Necrosis
Symptoms
As a first symptom margins of mature leaves turn brown and dry. The browning progresses inwardly between the veins.
Causes
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. The browning progresses inwardly between the veins. Almost at the same time the leaf base including the midrib and petiole darkens.
Causes
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.
Causes
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.
Causes
Potassium Deficiency.
Potassium deficient leaves contain less than 0.5% K. Magnesium deficiency and salt burn can produce similar symptoms.
Strawberry - Necrosis
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.
Causes
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.
Causes
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 fertilisers for Potassium deficiency
YaraVita FOLIAR POTASH
Strawberry (field grown): 5 l/ha at green bud. Water rate: 200-500 l/ha.
Read more about YaraVita FOLIAR POTASHYaraTera 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.
Read more about YaraTera KRISTA K PLUS
