Aphid Alert
Aphid Season Around The Corner? Soybean aphid infestations in recent
years indicate that growers across much of the bean belt should be
prepared for managing the menacing pests. A complete integrated pest
management program should be considered if infestations attack your
farm.
This aphid has been confirmed by USDA in Delaware, Georgia, Illinois,
Indiana, Iowa, Kansas, Kentucky, Michigan, Minnesota, Mississippi,
Missouri, Nebraska, New York, North Dakota, Ohio, Pennsylvania, South
Dakota, Tennessee, West Virginia and Wisconsin and in the Canadian
provinces of Quebec, Ontario and Manitoba.
This newsletter will hopefully help you better understand the threat
aphids present, how to spot them on time and how to control them
before the damage is done.
For more information on this story visit:
http://enews.penton.com/enews/cornandsoybeandigest/aphidalert/2009_04_06_aphid_alert/display
Will Soybean Aphids Continue Their Threat in 2009? By Kevin
Steffey, University of Illinois Extension Entomologist
Soybean aphids broke their every-other-year cycle of outbreaks in the
Midwest in 2008, after most widespread outbreaks have occurred in
odd-numbered years since the insect attacked U.S. fields in 2000.
Regional and localized outbreaks also occurred in even-number years.
In 2008, however, the outbreak was widespread and economically
significant, especially in the northern Midwest (northern Iowa,
Minnesota, Nebraska, North Dakota and South Dakota).
Although the outbreak was less severe in Illinois, populations of
soybean aphids reached economically threatening numbers in many
northern counties late in the season (late August and early
September), says the University of Illinois (IPM) program.
The situation in 2008 leaves many wondering what will happen in 2009.
We have often relied on the numbers of winged soybean aphids captured
in suction traps in the fall to make broad predictions about the
potential for outbreaks during the following year. Roughly speaking,
large numbers of aphids captured in the fall of one year have
suggested a good potential for an outbreak the following year.
Conversely, small numbers of aphids captured in the fall of one year
suggested little potential for a widespread outbreak the following
year. Captures of winged soybean aphids in a network of 42 suction
traps in the Midwest can be viewed at the North Central IPM Center
"Regional Soybean Aphid Suction Trap Network."
For more on this story, go to www.ipm.uiuc.edu/bulletin/print.php?id=1070.
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