September 20, 2011
Measuring Up Kontos
Managing common insect pests successfully usually involves an integration of control tactics aimed at minimizing pest immigration and reproduction in the target crop. Successful pest management also involves maximizing the impact of mortality factors that regulate pest density. When conditions are favorable for insect colonization and development and mortality by weather and natural enemies is low, applications of insecticides may be necessary to minimize crop damage. Whiteflies, mealybugs and leafminers are among the most challenging pests to control. Problems with these pests often start when propagules–usually the less conspicuous and most easily transported life stage of the species–are introduced into the crop. Whitefly, mealybug and leafminer eggs and early instars are very difficult to detect by routine inspection due to their small size and secluded behavior. Once established, populations of these insects can quickly reach unacceptable levels triggering insecticide applications. Fortunately, several new insecticides such as spirotetramat (Kontos) are now […]
September 20, 2011
4 Pest Control Products
If the rumors are true, there are still insect and mite problems on greenhouse crops. The problems are being caused by the usual suspects–the pest group names have not changed much over the decades (although individual species within groups have varied). There’s just been a periodic reshuffling of the rankings in a kind of whack-a-mole scenario. The current top pest group listing includes aphids, mealybugs, thrips, fungus gnats, whiteflies and spider mites. Also fighting for top rankings are leafminers, caterpillars, shore flies and other mites (i.e. broad mites). As with any ranking of best or worst, you might have another list of top pests depending on what crops are being grown. The reasons why there are a fairly constant group of insects and mites to deal with are already well known (rapid pest reproduction cycle, wide host plant range, growing crops in protected environments, continuous production, etc.). These reasons are […]
August 24, 2011
The Rise Of Biopesticides
Biopesticides are a suddenly hot topic at every level of the value chain. Why? Find out in this insightful new 24-page special report from Meister Media. Click here to download the Rise of Biopesticides report or read it online, and to browse our special biopesticide trials database featuring nearly 100 trials from leading research institutions.
August 15, 2011
What Are Beneficial Nematodes?
Not sure whether or not beneficial nematodes can play a role in your greenhouse facility? Julie Graesch, the nematode field development specialist at Becker Underwood, sheds light on the beneficials and the role they play in a special YouTube video.
April 15, 2011
Instant Evolution in Whiteflies: Just Add Bacteria
In a case of rapid evolution, bacteria have been found to give whiteflies–crop-damaging insects of global importance–an edge over their uninfected peers, new research from the University of Arizona suggests. In just six years, bacteria in the genus rickettsia spread through a population of the sweet potato whitefly (Bemisia tabaci), an invasive pest of global importance. Infected insects lay more eggs, develop faster and are more likely to survive to adulthood compared to their uninfected peers. The discoveries were made by a University of Arizona-led team of scientists and are published in the April 8 issue of the journal Science. “It’s instant evolution,” says Molly Hunter, a professor of entomology in Arizona’s College of Agriculture and Life Sciences and the study’s principal investigator. “Our lab studies suggest that these bacteria can transform an insect population over a very short time. “It is not uncommon to find a microbe providing some […]