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Cotton
Magnesium and sulphur
| Required for: |
Lint yield, fibre strength
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| High deficiency risk: |
Mg: |
Waterlogged soils, sandy soils, acid soils
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S: |
Highly weathered soils, low in organic matter content
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| Deficiency symptoms: |
Mg: |
Purplish red leaves with green veins seen first on lower leaves, dead leaves are shed prematurely
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S: |
At first the newly grown leaves turn pale green mainly on the upper part of the plant
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| Optimal leaf concentrations |
Mg: |
0.40-0.50% |
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S: |
0.20-0.30% |
| Recommendations: |
140 – 170 kg Kieserite/ha are recommended to cover the Mg and S demand for high yielding cotton. Acid soils high in Al or alkaline soils, high in CaCO3 may require larger amounts. |
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Cotton leaves exposed to sunlight exhibit clear Mg deficiency symptoms.
Cotton harvest
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