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Red leaf disorders of pear in California and their relation to pear decline

Red leaf disorders of pear in California and their relation to pear decline

From abstr. in Phytopathology. 53: 884

Two red leaf disorders of pear observed in California were not due to nutritional or water imbalance, nor to girdling of the trunk or limbs by mechanical means or by disease cankers. In one type leaves were red to orange-red, and a microscopic examination of graft-union phloem samples showed 7 positive and 13 probable pear decline diagnoses.

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Accession: 014163711

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