Pick Your Community: | Hopkins | Muhlenberg | Daviess | Christian | Henderson | Lakes | McCracken | Webster
Davis Motor Sales banner ad

Insecticide Application Timing Vital to Native Bee Conservation

plos one 300FRANKFORT, Ky. (9/14/13) – Many homeowners may grimace at the sight of grubs, caterpillars or other pests lurking in their lawns, but understanding when and how to apply an insecticide to control these pests could have a big impact on native pollinator populations, according to a researcher from the University of Kentucky College of Agriculture, Food and Environment.
 
Jonathan Larson, a UK doctoral student, has found that when neonicotinoids, a type of systemic insecticide, are applied to flowering lawn weeds that are frequented by native bees, such as dandelions and white clovers, the chemicals can negatively impact local pollinator populations.
 
While honeybee population decline has received much attention, bumblebee numbers have also been on the decline. Much like honeybees, bumblebee population decline is related to diseases, pesticides and habitat loss or fragmentation.
 
“With honeybee populations struggling, we need to rely on native bees, such as bumblebees, to pick up the slack on plant pollination,” said Dan Potter, UK entomologist and Larson’s adviser. “Many native bees are much more efficient at pollinating certain types of crops, like tomatoes, urban flowering plants and vegetables grown in home gardens.”
 
Larson’s research, published in the journal PLOS ONE, showed that exposure to clothianidin, a neonicotinoid insecticide, negatively affected queen production. It also slowed foraging and caused higher mortality rates in worker bees within five days after exposure at plots on UK’s Spindletop Research Farm compared to control hives. When moved to an untreated field to forage for six weeks, the bees had a hard time gaining weight compared to the controls. Bumblebees exposed to chlorantraniliprole, from a relatively new class of lawn insecticides, developed and reproduced normally compared to the control hives.
 
“We’re trying to figure out ways that people can safely use insecticides and not affect native pollinators,” Larson said. “One way may be for homeowners and commercial lawn care professionals to use the newer class of insecticide instead of a neonicotinoid to control common lawn pests. Another way could be mowing treated areas.”
 
He found that when clover flowers treated with an insecticide are removed by mowing and new flowers grew to replace them, neither insecticide adversely affected bumblebee colonies.
 
“Direct contamination of the flowers is the problem, so homeowners need to remove the flower heads of weeds either before or after applying an insecticide to prevent exposure to native pollinators,” Larson said.
 
Larson is now studying the level of insecticides present in the nectar of subsequent generations of clover flowers after the field has been treated with an insecticide and the treated flowers have been removed.

The entire PLOS ONE article is available at http://bit.ly/15S6oja. Educational programs of the Kentucky Cooperative Extension Service serve all people regardless of race, color, age, sex, religion, disability, or national origin.
 
SurfKY News
Information provided by Janie Culton

© Copyright 2014 SurfKY News Group, Inc. All rights reserved. This material may not be published, broadcast, or rewritten without permission. SurfKY News encourages you to share this story by using one of the social media links below.

In Other News...

Teacher Appreciation at Land Between The Lakes

GOLDEN POND, Ky. (9/1/14) — Land Between The Lakes National Recreation Area offers teachers free general admission to… Read More

Hopkins County Family YMCA to Host 9/11 Heroes Meet and Greet

MADISONVILLE, Ky. (9/1/14) — In conjunction with the Madisonville 9/11 Heroes Run, the Hopkins County Family YMCA will… Read More

Most Read This Week (Site-Wide)

August 29, 2014 8185

Luke's Flea Market Vendors' Home Away…

in News by Charles W. Riley II, SurfKY News
August 28, 2014 7534

Police Pursuit Spans Parts of Northern…

in Top Stories by Alex Piper, MCSO
August 30, 2014 7494

One Hospitalized After Officer-Involved…

in Top Stories by Charles W. Riley II, SurfKY News
August 31, 2014 4587

Passenger in Officer-Involved Shooting…

in Top Stories by Rita Dukes Smith, SurfKY News Director
August 29, 2014 3913

Business Spotlight - Magical Memories…

in Top Stories by Charles W. Riley II, SurfKY News

Most Read Stories from Hopkins County

August 30, 2014 3183

Ponderosa Madisonville to Donate 10…

in Top Stories by Rita Dukes Smith, SurfKY News Director
August 30, 2014 1296

City of Madisonville Says 'Goodbye' to…

in Top Stories by Amber Averitt, SurfKY News
August 29, 2014 880

MCC Announces New Board Members

in Top Stories by Joyce Riggs
September 01, 2014 801

Hopkins County Misdemeanor Indictments

in Top Stories by Karen McKnight
August 29, 2014 575

Trover Health Endowment Reaches $100,000…

in Top Stories by Joyce Riggs

Most Read Stories from Owensboro

August 29, 2014 2542

Daviess County Sheriff’s Office Activity…

in News by Dennis Beard, SurfKY News
August 29, 2014 2459

Owensboro Police Department Activity…

in News by Dennis Beard, SurfKY News
August 28, 2014 2163

Downtown Trolley to Run on Labor Day

in News by Abby Shelton
August 30, 2014 1655

Owensboro Traffic Advisory

in News by Keith Todd
August 28, 2014 1441

Daviess County Sheriff’s Office Activity…

in News by Dennis Beard, SurfKY News

Most Read Stories from Muhlenberg County

August 28, 2014 7534

Police Pursuit Spans Parts of Northern…

in Top Stories by Alex Piper, MCSO
August 29, 2014 3913

Business Spotlight - Magical Memories…

in Top Stories by Charles W. Riley II, SurfKY News
August 28, 2014 3567

Another Greenville Home Invasion Being…

in Top Stories by Wes Miller, GPD
August 28, 2014 2330

Whitfield, Yonts Pay Tribute to Bob and…

in Top Stories by Paul McRee, SurfKY News
August 28, 2014 2240

Stanton Barrett's NASCAR Mustang Gets…

in Top Stories by Charles W. Riley II, SurfKY News

SurfKY News Group, Inc. Central Office & Printing Division
1125 Nebo Rd.  •  Madisonville, KY 42431  •  270.452.2249 (fax)
Main Number: 270.452.2727 (phone)  •  Printing Division Direct Line: 270.821.8600 (phone)

SurfKY Owensboro News Bureau
920 Frederica St. / Suite 210  •  Owensboro, KY 42301  •  270.683-8060 (phone)


Contact a member of our staff: www.surfky.com/contact
Copyright © 2014 SurfKY News Group, Inc.  •  Terms of Use  •  Site Map

social 03social 04social 22social 21social 06