The Intrinsic Rate of Growth of Soybean aphid,Aphis glycines Matsumura, Under Different Systems of Soybean Production
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Authors
Gibbons, Thomas
Issue Date
2004
Type
Presentation
Language
en_US
Keywords
Alternative Title
Abstract
The soybean aphid, Aphis glycines Matsumura is
an invasive species that first made its appearance
in the U.S. in the year 2000 infesting soybean,
Glycine max L. Since then the aphid has been
very successful in propagating and is now
abundant in soybean fields all over the Midwest.
The aphids show remarkable population growth,
due in part to parthogenetic reproduction, and
can go from a few aphids per plant to thousands
in a matter of weeks. Yield loss has been
recorded as high as 40% for heavily infested
fields. In this study an attempt was made to
estimate the intrinsic rate of growth, rm, for the
aphids for different agronomic treatments.
These treatments include conventional, notilling,
and zero-chemical input.
Description
1 broadside : ill.
Citation
Publisher
Kalamazoo College