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Tea
Magnesium and sulphur
| Required for: |
Yield, quality (amino acids, polyphenols,
flavour components)
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| High deficiency risk: |
Mg: |
Strongly weathered, topsoil eroded areas as well as compacted, waterlogged soils
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S: |
Subsoil with low organic matter content.
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| Deficiency symptoms: |
Mg: |
Yellowing between veins of leaves exposed to the sunlight.
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S: |
Whole plantation or patches appear pale green. Single leaves remain small and curl up in severe cases.
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| Optimal leaf concentrations: |
Mg: |
0.07-0.23%
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S: |
300-500 mg/kg SO4
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| Recommendations: |
130-170 kg Kieserite/ha should be broadcast or banded along the planting rows. Application should be prior to the monsoon season. |
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Typical interveinal chlorosis indicating severe magnesium deficiency.
S deficiency in tea known as "tea yellows". Leaves are reduced in size.
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