Cabbage - Deformation
Symptoms
Boron deficiency symptoms start on the younger leaves. They remain small, are curled down and become deformed. The leaves show chlorotic mottling on the edges and between the veins. Necrosis may appear on leaf margins and intercostal fields.
In case of ongoing deficiency only light heads are built and plant growth is severely stunted.
Causes
Boron deficiency on white cabbage
Boron is readily leached in sandy soils, particularly those in the tropics with low soil pH, CEC or low organic matter contents.
Brassicas need B in relatively large amounts.
Cabbage - Deformation
Symptoms
In case of ongoing B deficiency only light heads are built and plants show a rather loose habitus. Leaf color is brighter than usual.
Causes
Boron deficiency on white cabbage (right)
Boron is readily leached in sandy soils, particularly those in the tropics with low soil pH, CEC or low organic matter contents.
Brassicas need B in relatively large amounts.
Cabbage - Deformation
Symptoms
In case of ongoing B deficiency only light heads are built and plants show a rather loose habitus. Leaf color is brighter than usual.
Causes
Boron deficiency on white cabbage
Boron is readily leached in sandy soils, particularly those in the tropics with low soil pH, CEC or low organic matter contents.
Brassicas need B in relatively large amounts.
Cabbage - Chlorosis
Symptoms
In case of ongoing B deficiency only light heads are built and plants show a rather loose habitus. Leaf color is brighter than usual.
Causes
Boron deficiency on white cabbage
Boron is readily leached in sandy soils, particularly those in the tropics with low soil pH, CEC or low organic matter contents.
Brassicas need B in relatively large amounts.
Cabbage - Chlorosis
Symptoms
In case of ongoing B deficiency only light heads are built and plants show a rather loose habitus. Leaf color is brighter than usual.
Causes
Boron deficiency on white cabbage
Boron is readily leached in sandy soils, particularly those in the tropics with low soil pH, CEC or low organic matter contents.
Brassicas need B in relatively large amounts.
Boron deficiency made worse by
- Sandy soils
- Alkaline soils
- Soils low in organic matter
- High levels of nitrogen
- High levels of calcium
- Cold wet weather
- Periods of drought
Boron is important for
- Stabilization of plant tissues and improved plant and crop strength, working together with Ca
- Reducing effects of nutritional disorders such as tip burn and hollow heart
- Probably minimizing club root
- Increased crop quality and yield
Yara recommended fertilisers for Boron deficiency
YaraVita BORTRAC 150
Cabbage: 3 l/ha at 4-6 leaf stage with repeat applications at the above rate at 10-14 day intervals for moderate to severe deficiency. Water rate: 200 l/ha.
Read more about YaraVita BORTRAC 150
