Cabbage - Deformation
Symptoms
Older Leaves show a light brown and withered necrotic border zone.
With ongoing deficiency necrosis progresses from the edge to the middle.
Leaf margins are cupped upwards.
Causes
Potassium deficiency
Cabbage - Deformation
Symptoms
Older Leaves show a light brown and withered necrotic border zone.
With ongoing deficiency necrosis progresses from the edge to the middle.
Leaf margins are cupped upwards.
Causes
Potassium deficiency
Cabbage - Deformation
Symptoms
Older Leaves show a brown and withered necrotic border zone.
With ongoing deficiency necrosis progresses from the edge to the middle.
Leaf margins are cupped upwards.
Causes
Potassium deficiency (right)
Cabbage - Deformation
Symptoms
Older Leaves show brown, withered and brittle necrotic border zones.
With ongoing deficiency necrosis progresses from the edge to the middle.
Leaf margins are cupped upwards.
Causes
Potassium deficiency
Cabbage - Deformation
Symptoms
Older leaves show brown, withered and brittle necrotic border zones.
With ongoing deficiency necrosis progresses from the edge to the middle.
Leaf margins are cupped upwards.
Causes
Potassium deficiency
Cabbage - Deformation
Symptoms
Older leaves show yellow to brown, withered and brittle necrotic border zones. With ongoing deficiency necrosis progresses from the edge to the middle.
Leaf margins are cupped upwards.
Causes
Potassium deficiency
Cabbage - Deformation
Symptoms
Older Leaves show a brown and withered necrotic border zone. With ongoing deficiency necrosis progresses from the edge to the middle. Leaf margins are cupped upwards.
Plant growth is severely affected.
Causes
Potassium deficiency (right)
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
- Resistance to cold injury and drought
- High yields through increased biomass and head weight
- Consistent, early and evenly matured marketable crop
Yara recommended fertilisers for Potassium deficiency
YaraVita FOLIAR POTASH
Cabbage: 5 l/ha at the 4 to 6 leaf stage. Repeat as required for moderate to severe deficiency at 7 to 14 day intervals. Water rate: 200 l/ha.
Read more about YaraVita FOLIAR POTASH
