Fight spotted wing fruit fly with field sanitation, pesticides - The Packer

Fight spotted wing fruit fly with field sanitation, pesticides

11/16/2010 02:00:00 AM

John Duval, a colleague at the Gulf Coast Research and Education Center, suggested applying the material to a Styrofoam coffee cup, then inverting it on a stick in the row middles.

A handful of organophosphates also are labeled in certain crops for fruit fly control.

But Price says they have drawbacks.

Malathion, which used to be the mainstay of the Medfly program, is labeled for fruit flies. But Price says, "I haven't advised that a farmer use it more than three times in the past decade."

Lannate is labeled for blueberries but not strawberries.

Diazinon is labeled for strawberries but not blueberries and has a five-day pre-harvest interval.

They also belong to the organophosphate chemical class, an old family of products that has garnered bad press.

Danitol and Brigade are pyrethroids that are broad-spectrum. As a result, Western flower thrips may flare, he says.

"They trip the switch for bringing in a Western flower thrips problem that may be as bad as spotted wing drosophila," Price says. "I think we should hold these things for later in the season when we are not worried about changing the ecology of the field." 

For more information on spotted wing drosophila, click here.

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