March 1st 2013 Issue

One last Guthion spray

Growers should target it toward cherry fruit fly and apple maggot.

Fruit growers in Michigan can use existing stocks of the insecticide azinphos-methyl (Guthion) one more time before it is phased out at the end of September this year. When should they use it? Michigan State University tree fruit entomologist Dr. Larry Gut suggests they target flies—the apple maggot in the case of apple growers, the cherry fruit fly if they grow tart cherries. For several years, Gut has been working with growers helping them shift to newer “reduced risk” insecticides as the U.S. Environmental Protection Agency put Guthion on a phaseout program that gradually reduced the number of applications they […]

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March 1, 2013

Pest Management, Legal & Regulatory, Cherries, Insects and mites, Pesticides, 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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