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Pineapple
Magnesium and sulphur
| Required for: |
Yield, fruit size, sugar content and taste
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| High deficiency risk: |
Calcareous or alkaline soils, heavy, compacted soils or very light soils prone to leaching
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| Deficiency symptoms: |
Interveinal yellowing of leaves in the proximity of the fruits
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| Optimal leaf concentrations: |
Mg: |
0.41-0.57% (youngest mature leaf)
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S: |
0.07-0.10% (youngest mature leaf)
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| Recommendations: |
For yields of 55 – 65 t/ha of the planted crop, 400 – 550 kg Kieserite/ha are recommended, whereas for yields of 45 t/ha of the ratoon crop, 80 – 400 kg Kieserite/ha are required. Kieserite is either broadcast pre-planting or banded along the planting row to increase efficiency. If indicated by plant analysis, supplemental Mg can be applied to the foliage using 5% solutions of Epsom Salt.
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Mg deficiency of a pineapple leaf blade exposed to sun light.
A well developed pineapple after being supplied with adequate amounts of Mg and S.
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