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Oilseed rape
Magnesium and sulphur
| Required for: |
Yield, oil formation, oil quality
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| High deficiency risk: |
Mg: |
Heavily limed soils, soils that receive large amounts of NH4+, K+, sandy soils, excessive rain
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S: |
Sandy soils with low organic matter content and in areas with small atmospheric sulphur depositions
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| Deficiency symptoms: |
Mg: |
Interveinal chlorosis turning from pale green to yellow
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S: |
Poor flowering, whitish blossom colour, spoon-like malformation of leaf blade, poor pod set.
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| Optimal leaf concentrations |
Mg: |
0.21-0.62% |
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S: |
6.0-7.0 mg/kg SO4-S |
| Recommendations: |
Dressings of 150-200 kg Kieserite/ha are recommended as maintenance dressing. To cover the high S requirement of OSR, this treatment is combined with a 5% Epsom Salt foliar spray between shooting and flowering stage. |
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back... |
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Mg deficiency symptoms occur as interveinal chlorosis.
S deficiency leads to smaller pods with a reduced number of seeds per pod.
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