Kiwifruit Nutrition Diagnosis

18. Molybdenum deficiency

The native reserves of molybdenum in many New Zealand soils are very low13. Although extensive plantings of kiwifruit
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Deficiency and toxicity symptoms of key elements are clearly illustrated and discussed in this publication. Comparisons
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Disorders producing symptoms mainly on the older leaves - Zinc deficiency For many plant species, zinc is usually
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Factors for converting MAF Quicktest results to other units13. (1) Soil: extractant ratio 4.4:20 (v/v) for Ca, K, Mg, 1:
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Accurate diagnosis is essential if nutrient disorders are to be dealt with effectively. While this booklet is concerned
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Disorders producing symptoms mainly on the older leaves - Salinity Salinity is caused by high concentrations of salts
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Early symptoms of magnesium deficiency include a pale yellow-green interveinal chlorosis of the older leaves on the
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Soils containing large amounts of lime, usually calcium and magnesium carbonates. Green pigments located in the
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Kiwifruit: A botanical review. Horticultural Reviews, 6, 1-64. . Copper deficiency in world crops. Outlook on
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The appearance of small irregular patches of yellow tissue near the centre of the younger leaves is the first sign of
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Kiwifruit are relatively tolerant of excess phosphorus in the soil. To date phosphorus toxicity has not been observed
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Sulphur deficiency causes some visible symptoms which resemble those of nitrogen deficiency. These include a severe
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Excess nitrogen readily reduces the growth of kiwifruit (Photo 10a). Symptoms appear first on the older leaves as an
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Disorders producing symptoms mainly on the older leaves - Boron toxicity Early symptoms of boron toxicity include a
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Nutritional effects on fruit yield and Quantitive nutrient requirements of kiwifruit. Extensive surveys of the major
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