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ISHS Acta Horticulturae 324: Symposium on Soil Sickness and Replant Diseases in Fruit Trees

PRELIMINARY STUDY ON THE OCCURRENCE OF REPLANT DISEASE IN APPLE ORCHARDS IN POLAND

Authors:   A. Szczygiel, A.L. Zepp
Abstract:
Soil samples from 121 orchards in 9 regions were examined for the occurrence of apple replant disease (ARD) using standard biotest. Samples were not-treated or treated in one of the following ways: steaming, formalin and air drying. Significant growth improvement of Antonovka seedlings by treating soil was observed in 51.2% of investigated orchards; in 44.6% of them by steaming, in 29.8% by formalin and in 25.8% by air drying. ARD was more prevalent in sandy than in heavy soils.
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