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Cassava
Magnesium and sulphur
| Required for: |
Yield, root & tuber growth, starch production
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| High deficiency risk: |
Mg: |
Acid soils, high Al concentration in soil solution
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S: |
Highly weathered soils with a low OM content and large amounts of Fe oxides |
| Deficiency symptoms: |
Mg: |
Interveinal chlorosis of the leaf blade
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S: |
Chlorosis of the whole shoot, showing reduced and stunted growth
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| Optimal leaf concentrations |
Mg: |
0.25-0.50% |
| (adequate supply) |
S: |
0.30-0.40% |
| Recommendations: |
For yields > 40 t/ha, 140–250 kg Kieserite/ha should be applied based on removals. Soils with a poor Mg status or extremely acid soils should receive 1.5 - 2.0 times that amount. |
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Healthy crop of cassava
Pictures showing deficiency symptoms are not available at the moment.
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