Colza - Hollowness
Symptômes
Shortened internodes of the shoot lead to a stunted appearance. Splits and hollow lesions occur in stems and truncs.
Raisons
Boron deficiency
Colza - Deformation
Symptômes
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.
Raisons
Boron deficiency
Deformation of young leaf margins is similar to Ca deficiency.
Colza - Deformation
Symptômes
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.
Raisons
Boron deficiency
Deformation of young leaf margins is similar to Ca deficiency.
Colza - Hollowness
Symptômes
Hollow brown lesions occur in the stem base.
Raisons
Boron deficiency
Boron deficiency aggravé par
- Sandy soils
- Alkaline soils
- Soils low in organic matter
- High levels of nitrogen
- High levels of calcium
- Cold wet weather
- Periods of drought
Bore est important pour
- 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 a recommandé cet engrais pour Bore
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.
En savoir plus YaraVita BORTRAC 150
