Bee lover - Mark Welker says pesticides are harming hives

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By day, he’s a chemistry professor at Wake Forest University. But when he comes home to Clemmons in the evenings he checks on his honeybee hives that he counts on to pollinate his berry bushes and fruit trees. — Photo by Chris Mackie

Reprinted from The Clemmons Courier with permission

When Mark Welker decided to become a beekeeper, he was looking for some help with all the fruit bushes and trees in his yard.

“I was putting them in to help us,” said Welker, who lives in Clemmons

near West Forsyth High School. “We’ll help them, and they’ll help us by

pollinating all the fruit trees and fruit plants we have. That was my

motivation to take a class to learn how to do it.”

And Welker said that has proven to be the case with his numerous

blueberry, raspberry and blackberry bushes along with a few peach and

cherry trees.

“They’re all over them when they bloom,” he said.

Welker decided last year that he wanted to learn the basics of being a

beekeeper. He said there were classes in Forsyth County, but he opted to

take a class through the Davidson County Cooperative Extension in

downtown Lexington because the Thursday night it was offered fit his

schedule better.

And he has really enjoyed the experience.

However, in his second year of keeping bees, he encountered a setback

this summer when he returned from a weekend trip to find piles of dead

bees in front of two of the four hives in his yard.

Based on his research, Welker, who is a chemistry professor at Wake

Forest, said that a kill of this magnitude is most consistent with

exposure to a pesticide.

“One common pesticide that gardeners use is Sevin dust, and it is

particularly harmful to bees,” he said of the insecticide, which does

not kill on contact. “Once the bees have it on them, they return to the

hive and spread it to other bees and the queen.”

That’s what Welker speculates happened with the two hives.

“One of them is completely gone now,” he said, adding there were literally thousands of dead bees.

Another theory, according to Welker, is that the kill could have been

the result of colony class disorder, which is when the bees from a

colony abruptly disappear.

“What happens there is all the workers go away, they don’t come back,”

he said. “It sure appears it was more pesticide exposure.”

Welker suggested that those using pesticides in the Clemmons area could

do the least harm to honeybees in the area by using liquid sprays

instead of dusting and also to spray at sundown instead of in the

morning.

He figures that each of his hives has anywhere from 20,000 to 60,000

bees. Welker said that he harvested honey in May and again in early

July.

“I’m not a big-time honey producer,” he said. “We got a gallon in May

and three or four gallons in July. Certainly, that’s enough for our

family for a year and our friends. We use it and give it away to people

we know.”

It’s a hobby that he expects to continue.

“That unless we come back from a weekend and find bees that died in three days,” Welker said.

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