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Apple scab spores detected in eastern U.S. orchards

Zoom in font  Zoom out font Published: 2016-03-18  Views: 13
Core Tip: Kari Peter, a Penn State Biglerville tree fruit pathologist, has released a recent report announcing that the first apple scab spores of the season have been detected in both Pennsylvania and New York orchards.
Kari Peter, a Penn State Biglerville tree fruit pathologist, has released a recent report announcing that the first apple scab spores of the season have been detected in both Pennsylvania and New York orchards.

Cornell University plant pathologist Dave Rosenberger reported spores being found in abandoned orchards near Red Hook, New York, on March 7. Two days later, Peter reported finding spores on trees at the Biglerville Fruit Research and Extension Center.

She said infection wouldn’t start until there is green tissue and an infection period. Still, it’s time for preventive measures.

“Since trees are pushing due to the warm weather the last several days,” she said, “now is a good time to apply dormant copper sprays to manage diseases.”

Get out the spray rigs to apply dormant copper sprays on apples and pears for fire blight and scab and on peaches for bacterial spot and peach leaf curl.

“Aim for two pounds per acre of metallic copper, so pay attention to the percent metallic copper equivalent listed on the label of the copper you use,” Peter said.
 
 
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