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John Fulton

John Fulton
Former County Extension Director

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In The Backyard

Horticulture columns and tips done on a timely basis
fire blight on apple

Fire Blight

Posted by John Fulton -

Apple and pear trees continue to have their problems. There is a large amount of tip dieback in some varieties, and this is probably fire blight. Look for a shepherd's crook at the tip of the affected areas as a clue it is fire blight. Fire blight is a bacterial disease, therefore there is little chance for you to treat it. The common treatment in commercial operations is streptomycin, but it has to be applied before symptoms appear. If you are lucky, you may be able to find these products in the better stocked outlets. Bordeaux mixture can also help prevent, and that means prevent and not cure, the disease in some years. The disease is also hitting the ornamental pears rather hard in some years.

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