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The effect of summer pruning and calcium foliar spraying of "Jonagold" and "Sampion" apple trees on fruit storage quality.

Author(s) : OLSZEWSKI T., MIKA A.

Summary

Low calcium content of fruit is the major reason for poor storage quality of apples. Apples with low calcium contents are susceptible to storage disorders such as bitter pit, which can be controlled by increasing calcium contents of the fruit. This may be achieved by spraying with calcium compounds and summer pruning. The aim of the paper was to compare the effectiveness of these two treatments. Four-year-old "Jonagold" and "Sampion" apple trees grafted on M 26, were subjected to various treatments concerning either shoot pinching or spraying with calcium chloride. Apples from the trees subjected to two pinchings and 4 sprays had less bitter pit after 85 days of storage than apples from the other treatments and the control.

Details

  • Original title: The effect of summer pruning and calcium foliar spraying of "Jonagold" and "Sampion" apple trees on fruit storage quality.
  • Record ID : 2000-1952
  • Languages: English
  • Source: Proceedings of the International Symposium on effect of preharvest and postharvest factors on storage of fruit.
  • Publication date: 1999/03
  • Document available for consultation in the library of the IIR headquarters only.

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