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Survey of Soybean Weeds in Mississippi

Published online by Cambridge University Press:  20 January 2017

Alfred Rankins Jr. ,
John D. Byrd Jr. ,
Donald B. Mask ,
Jimmy W. Barnett  and
Patrick D. Gerard
Alfred Rankins Jr.*
Affiliation:
Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762
John D. Byrd Jr.
Affiliation:
Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762
Donald B. Mask
Affiliation:
Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762
Jimmy W. Barnett
Affiliation:
Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762
Patrick D. Gerard
Affiliation:
Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS 39762
*
Corresponding author's E-mail: arankins@pss.msstate.edu
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Abstract

A survey was conducted in 2000 across 38 counties in Mississippi on 192 randomly selected soybean fields to assess the most common occurring weeds. Statewide, prickly sida, which was present in 40% of the fields sampled, was the most common. Pitted and entireleaf morningglory were present in 34 and 29% of the soybean fields, respectively. Broadleaf signalgrass and barnyardgrass were the most common annual grasses, and yellow nutsedge was the most common sedge observed. Trumpetcreeper and redvine were the most common perennial vines. In the Mississippi Delta region of Mississippi, prickly sida was present in 45% of the fields sampled. The trend of occurrence of other species in the Delta mirrored statewide results. In eastern Mississippi, prickly sida and broadleaf signalgrass were found in 43% of soybean fields. Sicklepod, common cocklebur, and balloonvine were more prevalent in eastern Mississippi, when compared with the Mississippi Delta. Since 1982, there has been a sevenfold decline in the occurrence of common cocklebur and a fourfold decline in the occurrence of johnsongrass in Mississippi soybean. Also, the occurrences of redroot pigweed, common ragweed, and fall panicum have declined. Conversely, the occurrences of yellow nutsedge and broadleaf signalgrass have increased. The occurrences of barnyardgrass, prickly sida, redvine and trumpetcreeper have been relatively static over the past two decades.

Keywords

Balloonvine, Cardiospermum halicacabum L. # CRIHAcommon cocklebur, Xanthium strumarium L. # XANSTcommon ragweed, Ambrosia artemisiifolia L. # AMBELfall panicum, Panicum dichotomiflorum Michx. # PANDIjohnsongrass, Sorghum halepense (L.) Pers. # SORHApitted morningglory, Ipomoea lacunosa L. # IPOLAprickly sida, Sida spinosa L. # SIDSPredroot pigweed, Amaranthus retroflexus L. # AMAREredvine, Brunnichia ovata (Walt.) Shinners # BVRCIyellow nutsedge, Cyperus esculentus L. # CYPESsoybean, Glycine max (L.) MerrAnnual grassescommon weedsMississippi Deltanutsedgeperennial vineweed surveyALS, acetolactate synthaseEM, eastern MississippiMASS, Mississippi Agricultural Statistics ServiceMD, Mississippi Delta
Type
Education/Extension
Information
Weed Technology , Volume 19 , Issue 2 , June 2005 , pp. 492 - 498
Copyright
Copyright © Weed Science Society of America 

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