Pick Your Community: | Hopkins | Muhlenberg | Daviess | Christian | Henderson | Lakes | McCracken | Webster

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 2015 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.

3/13 - 16
button coupons

Stock Report

1 DOW 17,678.70
+6.10 (0.03%)    
2 S&P 2,057.09
+5.27 (0.26%)    
3 NASDAQ 4,771.76
+13.88 (0.29%)    
3/13 - 16
3/13 - 16
button classifieds

In Other News...

School Board Votes 3-2 for Utility Tax

GREENVILLE, Ky. (1/26/15) — The Muhlenberg County School Board met in special session at 5 p.m. Monday, January, 26 to… Read More

MCCH Offers Free Screenings at the Love Your Heart Health Screening Event on Feb. 6

MURRAY, Ky. (1/25/15) — Murray-Calloway County Hospital encourages you to Love Your Heart in recognition of American… Read More
3/13 - 16

Most Read This Week

January 23, 2015 8482

Local Church's Faith Restored; 71 Souls Saved…

in Video by Gary Gates, SurfKY News
January 20, 2015 7269

Bridal, Prom, Pageant Expo Planned for February…

in Hopkins News by Dana Brown
January 22, 2015 7100

Nortonville Man Accused of Selling Drugs near…

in Local (Hopkins) Top News by Madisonville Police Department/Hopkins County Jail
January 21, 2015 5874

KYDOT Pre-Treating Roads Thursday in Antipation…

in Top News For All Sites by Keith Todd
January 23, 2015 5638

Parents Face Charges after Marijuana Joint Falls…

in Local (Hopkins) Top News by Madisonville Police Department/Hopkins County Jail
January 22, 2015 5423

MCEA Head: Further School Mergers Might Ease…

in Local (Muhlenberg) Top News by Paul McRee, SurfKY News
January 21, 2015 4843

Man Arrested after Allegedly Nodding off on Baby…

in Local (Hopkins) Top News by Madisonville Police Department/Hopkins County Jail
January 23, 2015 4451

Nortonville Woman Charged for Meth Possession

in Local (Hopkins) Top News by Hopkins County Sheriff's Office/Hopkins County Detention Center
January 25, 2015 4164

Dean’s List Announced

in Top News For All Sites Touching Hopkins by Joyce Riggs
January 22, 2015 3671

Local Family Business Changes Hands

in Local (Hopkins) Top News by Doreen Dennis, SurfKY News

Stories Trending Today

January 25, 2015 4164

Dean’s List Announced

in Top News For All Sites Touching Hopkins by Joyce Riggs
January 26, 2015 2606

Man Goes to Jail after Allegedly Attacking Family

in Local (Hopkins) Top News by Madisonville Police Department/Hopkins County Jail
January 25, 2015 2344

UPDATE: Two Die, Two Injured in Two-Vehicle…

in Local (Owensboro) Top News by Dispatcher Dustin Staves
January 25, 2015 2091

Juvenile Hit by Vehicle at McDonald's

in Local (Muhlenberg) Top News by GPD Officer Wes Miller
January 26, 2015 2085

KSP Arrests Two on Child Porn Charges; MPD…

in Top News For All Sites Touching Hopkins by Trooper Stu Recke
January 25, 2015 1673

Kynect Enrollment Climbs as Countdown to Feb. 15…

in General News For All Sites by Office of the Governor
January 25, 2015 1671

Market Commentary - Jan. 25, 2015

in Top News For All Sites by Randall L. Franklin
January 25, 2015 1538

March 20-22 Women's Retreat: 'Holiness in Family…

in Owensboro News by Jennifer Kaminski
January 25, 2015 1416

Legislator's Log - Week of Jan. 25, 2015

in General News For All Sites by Brent Yonts
January 25, 2015 1411

Dave Says - Jan. 25, 2015

in General News For All Sites by Dave Ramsey

SurfKY News Group, Inc.
Corporate Office & Studio
1125 Nebo Rd.  •  Madisonville, KY 42431
270.452.2727 (phone)
  •  270.452.2249 (fax)


Contact a member of our staff: www.surfky.com/contact
Copyright © 2015 SurfKY News Group, Inc.  •  Terms of Use  •  Site Map

social fbsocial twsocial yt
social gpsocial flr subscribevideoitunessocial rss