Symptoms
Older Leaves show a yellow to brown, well defined border zone.
With ongoing deficiency necrosis progresses from the margins to the middle.
Causes
Potassium deficiency
Brassicas have a relatively high K-requirement lasting through head formation and enlargement. Good K supply results in a more consistent, marketable crop with better inner and outer quality.
Symptoms
Older Leaves show a yellow to brown necrotic, well defined border zone.
With ongoing deficiency necrosis progresses from the margins to the middle.
Causes
Potassium deficiency
Brassicas have a relatively high K-requirement lasting through head formation and enlargement. Good K supply results in a more consistent, marketable crop with better inner and outer quality.
Symptoms
Older Leaves show a yellow to brown necrotic, well defined border zone.
With ongoing deficiency necrosis progresses from the margins to the middle.
Causes
Potassium deficiency (right)
Brassicas have a relatively high K-requirement lasting through head formation and enlargement. Good K supply results in a more consistent, marketable crop with better inner and outer quality.
Symptoms
Older Leaves show a yellow to brown necrotic, well defined border zone.
With ongoing deficiency necrosis progresses from the margins to the middle.
Causes
Potassium deficiency
Brassicas have a relatively high K-requirement lasting through head formation and enlargement. Good K supply results in a more consistent, marketable crop with better inner and outer quality.
Symptoms
Older Leaves show a yellow to brown necrotic, well defined border zone. With ongoing deficiency chlorosis and subsequent necrosis progress from the margins to the middle.
Growth is severely stunted.
Causes
Potassium deficiency (right)
Brassicas have a relatively high K-requirement lasting through head formation and enlargement. Good K supply results in a more consistent, marketable crop with better inner and outer quality.
Symptoms
Older Leaves show a yellow to brown necrotic, well defined border zone. With ongoing deficiency chlorosis and subsequent necrosis progress from the margins to the middle.
Growth is severely stunted.
Causes
Potassium deficiency
Brassicas have a relatively high K-requirement lasting through head formation and enlargement. Good K supply results in a more consistent, marketable crop with better inner and outer quality.
Symptoms
Older Leaves show a yellow to brown necrotic, well defined border zone. With ongoing deficiency chlorosis and subsequent necrosis progress from the margins to the middle.
Growth is severely stunted.
Causes
Potassium deficiency
Brassicas have a relatively high K-requirement lasting through head formation and enlargement. Good K supply results in a more consistent, marketable crop with better inner and outer quality.
Broccoli: 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.
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