For More Information on the Soybean
aphid:
Univesity
of Nebraska Extension
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Common Characteristics:
As with all aphid this insect is small, and like
many other aphids its green, a distinguishing characteristic is that its
cornicles are black also if the aphid is feeding on soybean in any numbers
it most likely is a soybean aphid.
Environmental Impact:
Damage occurs from feeding by the aphid on the
plant sap and from the viruses it can spread, also the by product of all
the feeding (honey dew) falls off of the aphids cornicles onto plant material,
dries and creates sooty mold further reducing yield.
Management:
Control at this point mainly consist of
keeping tract of numbers of aphids, and the treating with insecticides,
although it is warned that if the soybean is flowering that care must be
taken because honey bees may be killed off.
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