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Tobacco
Magnesium and sulphur
| Required for: |
Yield, good combustibility, high leaf quality index
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| High deficiency risk: |
Mg: |
Strongly weathered mineral soils or calcareous soils
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S: |
Eroded soils with low organic matter content, areas of reduced atmospheric S deposition
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| Deficiency symptoms: |
Mg: |
Chlorotic patches between veins of older, in severe cases also of younger leaves
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S: |
Yellowing and curling upward of younger leaves which remain smaller in size
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| Optimal leaf concentrations: |
Mg: |
0.20-0.65%
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S: |
0.15-0.65%
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| Recommendations: |
For flue-cured tobacco 85-113 kg Kieserite/ha are recommended.
Burley tobacco requires 104-138 kg Kieserite/ha and for dark tobacco 140-225 kg Kieserite/ha are recommended. Fertilizers are applied before transplanting or before ridging.
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Typical Mg deficiency symptoms: Chlorotic patches between veins spreading from the leaf tips.
S deficiency in tobacco is characterised by stunted growth, yellowing and curling of young leaves.
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