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: 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