Mealy Bug Problems

J.E. Shields
Wed, 07 Dec 2011 09:20:26 PST
Hi all,

I assume imidacloprid is the active agent in the Bayer pesticide mentioned.

I have found that imidacloprid alone does not do the job against mealy bugs 
anymore.  I suspect that mealy bugs are becoming resistant to this 
chemical, and probably soon if not already to related 
chemicals.  Imidacloprid is in the neonicotinoid family (not sure of the 
correct spelling).

I have been using a mixture of bifenthrin and imidacloprid sprays in 
attempting to clean up my larger greenhouse.  I'm not sure these are 
official label uses for these two pesticides, so don't take this as a 

In any case, if mealy bugs are beginning to develop resistance to some 
pesticides, we need to find new ones (i.e. from new chemical families) to 
use against these ubiquitous pests, and I think we will need to always use 
combinations of two different types of pesticides.

Just my opinoins.....

Jim Shields

At 12:08 PM 12/7/2011 -0500, you wrote:
>Hi guys,
>     Well, it's that time of year where the mealies seem to get a bit out of
>control!  I can't seem to keep them at bay, does anyone have any advice?
>I've been using Bayer 3-1 spray with a systemic but it doesn't seem to be
>doing the trick?
>Josh, Indiana

Jim Shields             USDA Zone 5
P.O. Box 92              WWW:
Westfield, Indiana 46074, USA
Lat. 40° 02.8' N, Long. 086° 06.6' W

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