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A dieback of pears observed in France and resembling pear decline or moria


, : A dieback of pears observed in France and resembling pear decline or moria. Acta Horticulturae (44): 131-138

A disease characterized by 2 types of decline was observed in the Beurre Hardy budded on seedling pear. A slow decline of about 4/5 of the trees began with an early reddening of the undersides and then the upper sides of the leaves which were often small and deformed. In the following year 16% of the trees thus affected appeared to be cured but the remainder grew poorly and had reduced leaf area with many clustered leaves.


Accession: 000270620

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Related references

Shalla, T.A.; E.A., 1961: The probable coidentity of the moria disease of pear trees in Italy and pear decline in North America. Pear decline is currently the most destructive disease of pear trees in western North America. It is estimated that over 100,000 trees were killed by this disease in California alone during the 1960 growing season. Trees die by a gradual loss of v...

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