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Banana
Magnesium and sulphur
| Required for: |
Development of stem and leaves, synthesis and accumulation of carbohydrates, bunch formation, yield
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| High deficiency risk: |
Mg: |
Sandy soils, soils that receive large amounts of NH4+, K+, Ca2+ or on acid soils, where Al toxicity is a problem
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S: |
On highly weathered soils, with low OM contents and no FYM application.
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| Deficiency symptoms: |
Mg: |
Yellow stripes on the banana leafblade, green colour persists near midrib
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S: |
Stunted growth, yellowing of the leaf areas between the veins
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| Optimal leaf concentrations: |
Mg: |
0.30-0.46%
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S: |
0.23-0.27%
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| Recommendations: |
225 – 450 kg Kieserite/ha split into 2-3 dressings. For high production an ideal cation balance in the soil of K : Mg of 1 : 2 on weathered mineral soils and 1 : 1 on volcanic soils should be achieved.
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Mg deficiency symptoms occur as yellow stripes on the banana leafblade.
S deficiency is manifested by stunted growth and yellow colour of the plant.
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