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For tree farms, less is more when it comes to pesticides
ELIZABETHTOWN, Ky., (Jul 30, 2009)

Some commercial tree farm managers who are used to applying large volumes of pesticides to control insects and diseases on their operations are trying a new management system using half the amount. 

Horticulturalists with the University of Kentucky College of Agriculture are part of an effort led by The Ohio State University (OSU) to teach nursery and farm managers how to cover more plants with less pesticide, thereby saving money and becoming more environmentally aware.

At a recent field day at the Green Ridge Tree Farm in Elizabethtown Amy Fulcher, UK nursery crops extension associate, gathered a group of Kentucky nursery owners and managers together to learn about the Half-Rate Pesticide approach. The Half-Rate Pesticide Program started at OSU about seven years ago, and OSU educators  have traveled around the country ever since showing people how less spraying  can work for them.

 Participants listened to Heping Zhu, an agricultural engineer from the U.S. Department of Agriculture, and Randy Zondag, OSU extension educator, talk about calibrating sprayers to more efficiently apply pesticides. Zondag said many times growers have never calibrated their sprayer, and that leads to uneven coverage of the tree or crop. It may, unfortunately, also lead growers to believe need to spray more.

"But the issue is not how much can...
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