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  • Author or Editor: H. J. Brooks x
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Natural infections of fire blight following 2 years of epiphytotic conditions caused severe blight damage in the pear cultivar collection at Beltsville, Maryland. Of 522 cultivars rated with the USDA fire blight scoring system, 88% were highly susceptible, 2% were moderately susceptible, 4% were moderately resistant, 5% were highly resistant, and 2% had no blight symptoms. Names of pear cultivars in each resistance class are listed.

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