Oilseed Rape - Hollowness
Symptoms
Shortened internodes of the shoot lead to a stunted appearance. Splits and hollow lesions occur in stems and truncs.
Reasons
Boron deficiency
Oilseed Rape - Deformation
Symptoms
Symptoms of boron deficiency start on the younger part of the plant. The leaves are small, deformed, crinkled and brittle. They show necrotic patches at leaf margin and lamina. Shortened internodes of the shoot lead to a stunted appearance. Splits and hollow lesions occur in stems and truncs.
Reasons
Boron deficiency
Deformation of young leaf margins is similar to Ca deficiency.
Oilseed Rape - Deformation
Symptoms
Symptoms of boron deficiency start on the younger part of the plant. The upper and middle leaves are small and stunted, deformed, crinkled and brittle. They may show necrotic patches at leaf margin and lamina.
Reasons
Boron deficiency
Deformation of young leaf margins is similar to Ca deficiency.
Oilseed Rape - Hollowness
Symptoms
Hollow brown lesions occur in the stem base.
Reasons
Boron deficiency
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
- Better crop establishment and reduced plant losses over winter
- Increases nutrient levels in the crop for better spring regrowth
- Improved flowering and more even maturity
- Boosts grain yield and oil content of seed
Yara recommended fertilizers for Boron
YaraVita BORTRAC 150
Oilseed Rape: For a single application. 3 l/ha at onset of stem extension. For moderate deficiency, 3 l/ha at 4 to 6 leaf stage and 3 l/ha at onset of stem extension. An extra application can be made between 10 and 14 days later or up to the start of flowering. Water rate: 50 to 200 l/ha.
Read more about YaraVita BORTRAC 150
