Bio-assay Data
New data out of Florida demonstrate that a highly imidacloprid resistant population of
Q-biotype whitefies exhibits very little cross resistance to dinotefuran , the active
ingredient in Safari. However, these two compounds have the same mode of action
(Group 4A), and without sound resistance management, whitefly resistance to dinotefuran
could increase. Therefore, Safari should only be rotated with products having a
different mode of action. Read more now…
Updated: Sept. 12, 2007
Pest Management Program
To help minimize the threat of resistance, the Q-biotype Whitefly Task Force
developed a comprehensive pest management program that will let growers manage
their whiteflies and produce a saleable crop, while practicing sound resistance
management at the same time. Read more now…
Updated: Sept. 12, 2007
Q-biotype Whitefly Task Force Alert
As we enter the fall poinsettia season, growers have reported an increased
incidence of whiteflies on some shipments of rooted cuttings, and there have
been a few detections of Q biotype whiteflies. In addition, unusually high whitefly
populations have developed on cotton in some parts of the southeastern U. S. and
have moved into some greenhouses and nurseries. Therefore, as growers enter the
fall poinsettia season the Q-biotype Whitefly Task Force has prepared a letter
to alert growers to this developing situation, and suggests several steps that
growers should take. Read more now…
Updated: Sept. 12, 2007
Industry Reaction to 2007 Q-biotype Season
In support of the Q Biotype Task Force Effort, Griffin Greenhouse and Nursery Supplies
has developed an alert letter for their customers. This alert suggests that growers
take a watchful approach , get their whiteflies biotyped, and practice sound resistance
management to fight whiteflies this season. Read more now…
Updated: Sept. 12, 2007
The Industry Responds to Whitefly Resistance
What are the best steps to sound resistance management processes? Check out a new article from Greenhouse Grower magazine devoted to insect resistance – most notably the Q-biotype whitefly – and expert advice to help manage the potential problem.
Read more now…
Rick Yates, technical support manager at Griffin Greenhouse and Nursery Supplies, encourages growers not to overreact, but to "stay informed." Read more now…
Are you ready for Poinsettia Season and resistance?
- Check out university trials featuring best practices for Q-biotype management within poinsettias.
- Read how other industry leaders like NE Greenhouse Growers and Ecke Ranch both encourage proper scouting techniques and sound treatment practices to manage resistance concerns in poinsettias.
Optimizing the use of neonicotinoids against the sweet potato whitefly, Bemisia tibaci Gennadius, Q-Biotype in ornamental production
Click here for more information
Q 2006: Grower Perception Study
Top industry leaders - OFA, SAF, ANLA, FNGLA, IR-4 and Valent Professional Products - joined together to better understand the challenge of Q-biotype whiteflies in today's operations. Learn about trends and perceptions of Q-biotype from growers like you. And Dr. Lance Osborne of the University of Florida provides recommendations on what growers should be doing to prepare their operations from Q-biotype.
Q-biotype Infestation
NEW! Biotype results of whiteflies collected in Florida
(Note: excluding samples submitted by growers)
Read the PDF now…
This table summarizes biotype results from whitefly samples submitted to Dr. Cindy McKenzie (USDA-ARS, US Horticulture Research Laboratory, Fort Pierce, Florida). All whitefly samples were collected in Florida. Samples were submitted by Florida state plant inspectors, university and USDA researchers, and private consultants. This table DOES NOT include results from whitefly samples that were voluntarily submitted by growers. With the exception of the state of origin, information about whitefly samples voluntarily submitted by growers remains confidential. This table will be updated regularly as additional results become available.
Florida counties with confirmed reports of Q-biotype:
A new map is available highlighting counties in Florida where Q-biotype has been confirmed.
View the confirmed Florida counties now.
Last updated: 8/28/06
States with confirmed reports of Q-biotype:
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1 Alabama
2 Arizona
3 California
4 Connecticut
5 Florida
6 Georgia
7 Illinois
8 Indiana
9 Kentucky
10 Louisiana
11 Maine
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12 Maryland
13 Massachusetts
14 Michigan
15 New Hampshire
16 New Jersey
17 New York
18 North Carolina
19 Oregon
20 Pennsylvania
21 South Carolina
22 Vermont
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As of: 7/24/06
Source: University of Florida, Mid-Florida Research & Education Center
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