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Effect on crops - Kiwifruit
Magnesium and sulphur
| Required for: |
Yield (fruits per vine), aroma and taste
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| High deficiency risk: |
Mg: |
Sandy soils, calcareous or acid soils
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S: |
Low organic matter content of the soil
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| Deficiency symptoms: |
Mg: |
Pale yellow green interveinal chlorosis of older leaves on current season’s extension canes, large zone of green tissue is retained at the base of the leaf close to the point of attachment of the petiole
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S: |
Stunted growth, younger leaves turn pale green yellow at leaf margin than spread over most of the leaf
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| Optimal leaf concentrations: |
Mg: |
0.25-0.45%
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S: |
0.35-0.55%
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| Fertilizer recommendations: |
180-220 kg Kieserite/ha are recommended as maintenance dressing, split into two applications: Two third in the late winter and one third prior to flowering. Larger amounts are recommended on light soils prone to leaching.
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Typical interveinal chlorosis indicating Mg deficiency in kiwifruit.
Magnesium and sulphur are essential for the development of aroma and taste.
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