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Phyto81n07 710 - APS Home...In the mid- 1970s, attempts to detect resistant strains in apple and pear. orchards in western New York state and in apple orchards in Michigan failed (2,22)

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Page 1: Phyto81n07 710 - APS Home...In the mid- 1970s, attempts to detect resistant strains in apple and pear. orchards in western New York state and in apple orchards in Michigan failed (2,22)
Page 2: Phyto81n07 710 - APS Home...In the mid- 1970s, attempts to detect resistant strains in apple and pear. orchards in western New York state and in apple orchards in Michigan failed (2,22)
Page 3: Phyto81n07 710 - APS Home...In the mid- 1970s, attempts to detect resistant strains in apple and pear. orchards in western New York state and in apple orchards in Michigan failed (2,22)
Page 4: Phyto81n07 710 - APS Home...In the mid- 1970s, attempts to detect resistant strains in apple and pear. orchards in western New York state and in apple orchards in Michigan failed (2,22)
Page 5: Phyto81n07 710 - APS Home...In the mid- 1970s, attempts to detect resistant strains in apple and pear. orchards in western New York state and in apple orchards in Michigan failed (2,22)