Biotype Investigation   Greenhouse Product News December 2005   By Jim Bethke, Frank Byrne and Richard Redak
A biotype, B biotype, Q biotype: Researchers have been studying the differences between these for years, but just how different are they when it comes to control? This research has the answers.

The Mealybug Scourge   Greenhouse Product News May 2005   By Jim Bethke, Oliver Siapno
Early detection of mealybugs is very important, and monitoring requires regular inspection of host plants for waxy white deposits and the presence of ants and or sooty mold.
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Take Another Look   Greenhouse Product News January 2005   By Jim Bethke
Eventually, the camp was buzzing with the prospect of a challenge between the young woodsman and the old veteran of the camp.
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Progress Toward New Products Slows   Greenhouse Product News November 2004   By Jim Bethke
Unfortunately, “not much” was the typical response from my contacts in the chemical industry this year when I asked if there was anything new.
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The Latest Miticides   Greenhouse Product News June 2004   By Jim Bethke, Oliver Siapno and Richard Redak
Recent trials measure efficacy for some of the latest miticides.
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Insecticides and Miticides: What’s new? What’s old?   Greenhouse Product News November 2003   Jim Bethke
With the merging of so many companies and the continued growth of government regulations, there appear to be fewer competing laboratories in the search for new insecticides. Generics, forged from patent expiration, will become the next wave of registered pesticides. This means nothing really new. However, an unanswered question remains. Will pests that are difficult to control already, become more difficult to control due to enhanced pesticide tolerance?
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The Clone Wars: Aphids!   Greenhouse Product News March 2003   Jim Bethke and Richard A. Redak
According to the literature about aphids, every plant on the planet can be fed upon by one or more aphid species. However, when one considers that there are more than 4,000 species of aphids described worldwide, there are relatively few that are ornamental pests.
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Update on Insecticides and Miticides for the Ornamental Market   Greenhouse Product News November 2002   Jim Bethke
In Ann Chase's description of a list of fungicides she provided last year in her column, she said, "The majority of the products included are currently labeled somewhere in the United States, though you should check the label to see if they are registered for use in your area." I completely agree, and that's the approach I will take in this discussion.
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Leafminer Tenacity   Greenhouse Product News September 2002   James A. Bethke and Dr. Richard A. Redak
As growers progress into fall production, more and more reports are arising about a pest many thought was long since vanquished: the leafminer. Recently, Dr. Ron Oetting investigated an infestation of L. huidobrensis in chrysanthemums in Georgia. This species is a serious pest in South America, and it would behoove the industry to catch and eliminate these infestations as they occur.

Whiteflies Are Not Flies   Greenhouse Product News August 2002   James A. Bethke, Heather S. Costa and Richard A. Redak
There are over 1,200 species of whiteflies identified worldwide; however, only a few of them are classified as pest species. Newly introduced species of whitefly can quickly become pests and may adapt to new host plants and environmental conditions. For example, one year after the silverleaf whitefly reached greenhouses in California, it replaced the greenhouse whitefly as the dominant species on poinsettias.
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A New Mode of Resistance Management   Greenhouse Product News March 2002   Jim Bethke
What is the best approach to manage pests without enhancing pesticide resistance? Minimizing chemical control by incorporating other pest management tactics is a more sensible solution. Managing pests should begin with the basics of integrated control.
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