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  • March 1st 2013 Issue
  • Story by Richard Lehnert

    • Bacterial canker

    Freezes last spring set stage for epidemic of the disease in cherry orchards.

    A classic bacterial canker symptom showing cankers and gummosis of woody tissue.PHOTO COURTESY OF MICHIGAN STATE UNIVERSITY The weather turned hot and dry—­conditions conducive to healing the cuts without making the canker situation worse. Then, the recommended approach was to make two fall sprays of copper, with two more copper sprays recommended before bud break this spring. 12 STEPS TO MANAGE BACTERIAL CANKER In Oregon, bacterial canker is the leading killer of young sweet cherry trees. It is particularly destructive in higher rainfall areas. Spring frosts and cold winters promote bacterial canker, as do any kind of wounds. A publication […]

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    Pest Management, Cherries, Diseases, Richard Lehnert
    Picture of Richard Lehnert
    Richard Lehnert
    After growing up on a Michigan dairy farm, Richard Lehnert began writing about farming in 1962, while still a junior studying journalism at Michigan State University. He worked at newspapers for a year before joining the staff of Michigan Farmer, where he spent 26 years, the last 15 as chief editor. He was a member of the staff of Good Fruit Grower from 2010 until 2015. Read his stories: Story Index
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