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Southern Illinois University
Weed Science
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Waterhemp Management in Soybean
and
Glyphosate-Resistant Marestail Management for Soybean
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Challenges associated with managing
waterhemp in soybean continue to escalate
in Illinois. In broad terms, glyphosate
(Roundup type products) has been very
effective but some growers have experienced
either inconsistent control of waterhemp or
fields in which glyphosate had very little
activity at all on the waterhemp present. This
summary outlines a few key guidelines for
achieving improved control of waterhemp in
soybean. |
The presence of glyphosate-resistant
marestail has been documented in Illinois for
several years and it can likely be found in any
field in the southern half of the state. The
shift to a glyphosate-resistant marestail
population in a field can happen within a
single year as seed production and spread is
very prolific. |
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Bryan Young, Professor
Dept. of Plant, Soil and Agricultural Systems
Southern Illinois University MC-4415
1205 Lincoln Drive
Carbondale, IL 62901
Phone: (618) 453-7679
FAX: (618) 453-7457
E-mail: bgyoung@siu.edu
Internet: www.siu.edu/~weeds
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