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Johnsongrass |
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Johnsongrass (Sorghum halepense) is the most widespread resistant weed of Mississippi
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| Introduction |
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About this page |
| There are currently 15 different types (known as 'biotypes') of herbicide resistant weeds in Mississippi. The first herbicide resistant weed reported from Mississippi is Common cocklebur (Xanthium strumarium) with resistance to imazaquin, and imazethapyr, reported in 1989. Local weed scientists estimate that there are 530 sites and more than 39,100 acres infested with herbicide resistant weeds in Mississippi and they infest corn, cotton, cropland, rice, roadsides, soybean, and turf. The most widespread resistant weed of Mississippi is Johnsongrass (Sorghum halepense), which infests an estimated 1001-10000 acres and is found primarily in cotton, and cropland. Tall Waterhemp (Amaranthus tuberculatus (syn. rudis)), with resistance to glyphosate is the most recently discovered (2010) new type of resistant weed in Mississippi. |
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This is a resource page to assist you in
managing herbicide-resistant weeds in Mississippi . If you have any questions regarding herbicide-resistant
weeds in Mississippi please contact an
expert in your area. If you have encountered a computer related error on the site then contact
support@weedscience.org. If you are a weed scientist wanting to add or correct information on this page then please contact
research@weedscience.org
or add the
information directly.
Scroll down this page to view tables on
herbicide resistant weeds in Mississippi and its adjacent states as well as a list of articles about
herbicide resistant weeds in your region. Click on the links within
the table to view a case of resistance in more detail.
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HERBICIDE RESISTANT WEEDS IN MISSISSIPPI | | Weed | Situation | Herbicide Mode of Action | Year | Common cocklebur
(Xanthium strumarium) | soybean | B/2 - ALS inhibitors
(imazaquin, imazethapyr) | 1989 | Johnsongrass
(Sorghum halepense) | cotton, cropland | A/1 - ACCase inhibitors
(fenoxaprop-P-ethyl, fluazifop-P-butyl, quizalofop-P-ethyl) | 1991 | Johnsongrass
(Sorghum halepense) | cotton | K1/3 - Dinitroanilines and others
(pendimethalin) | 1992 | Horseweed
(Conyza canadensis) | soybean | D/22 - Bipyridiliums
(paraquat) | 1994 | Goosegrass
(Eleusine indica) | cotton | K1/3 - Dinitroanilines and others
(pendimethalin, trifluralin) | 1994 | Common cocklebur
(Xanthium strumarium) | cotton | Z/17 - Organoarsenicals
(DSMA, MSMA) | 1994 | Italian Ryegrass
(Lolium multiflorum) | roadsides | B/2 - ALS inhibitors
(sulfometuron-methyl) | 1995 | Annual Bluegrass
(Poa annua) | turf | C1/5 - Photosystem II inhibitors
(atrazine, simazine) | 1996 | Horseweed
(Conyza canadensis) | corn, cotton, rice, soybean | G/9 - Glycines
(glyphosate) | 2003 | Italian Ryegrass
(Lolium multiflorum) | cotton, soybean | G/9 - Glycines
(glyphosate) | 2005 | Horseweed
(Conyza canadensis) | soybean | D/22 - Bipyridiliums
(glyphosate, paraquat) | 2007 | Horseweed
(Conyza canadensis) | soybean | G/9 - Glycines
(glyphosate, paraquat) | 2007 | Palmer Amaranth
(Amaranthus palmeri) | cropland | B/2 - ALS inhibitors
(glyphosate, pyrithiobac-Na) | 2008 | Palmer Amaranth
(Amaranthus palmeri) | cropland | G/9 - Glycines
(glyphosate, pyrithiobac-Na) | 2008 | Tall Waterhemp
(Amaranthus tuberculatus (syn. rudis)) | soybean | G/9 - Glycines
(glyphosate) | 2010 |
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HERBICIDE RESISTANT WEEDS IN ADJACENT STATES | | | | | | |
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HERBICIDE RESISTANT WEED CONTACTS IN MISSISSIPPI
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Your local state
university extension agent or local department of agriculture
representative may be able to provide you with more information on
herbicide-resistant weeds in your region. Much of the information
about herbicide-resistant weeds in Mississippi has been
provided by the following experts.
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STATE CONTACTS | | JASON BOND | Assistant Research Professor
Mississippi State University
Delta Research and Extension Center
P. O. Box 197
Stoneville, 38776, Mississippi
United States of America
Phone : (662) 686-3282
Email Jason Bond |
| | JOHN BYRD | Mississippi State University
312 Dorman Hall
P.O. Box 9555
Mississippi State, 39762, Mississippi
United States of America
Phone : (601) 325-2311
Fax : (601) 325-8742
Email John Byrd
Web : Web Site Link |
| | G. COATS | Mississippi State University
Dept. Plant and Soil Science
Box 955539762, Mississippi
United States of America
Email G. Coats |
| | FRANCK DAYAN | Plant Physiologist
USDA-ARS
Natural Products Utilization Research Unit
P.O. Box 8048
University, 38667, Mississippi
United States of America
Phone : (662) 915-1039
Fax : (662) 915-1035
Email Franck Dayan |
| | THOMAS EUBANK | Assistant Extension/Research Professor
Mississippi State University
Weed Science
P.O. Box 197
Stoneville, 38766, Mississippi
United States of America
Phone : 662-686-3232
Email Thomas Eubank |
| | ROY GORDON | Rhone Poulenc Ag Company
Rt 1 Box 75
Kennedy Flat Rd
Leland, 38756, Mississippi
United States of America
Phone : (601) 686-9323
Fax : (601) 686-9328 |
| | TREY KOGER | Weed Ecologist
USDA-ARS
Southern Weed Science Research Unit
141 Experiment Station Road
PO Box 350
Stoneville, 38776, Mississippi
United States of America
Phone : 662 686-5290
Fax : 662 686-5422
Email Trey Koger |
| | VIJAY NANDULA | Assistant Research Professor
Mississippi State University
Delta Research and Extension Center
82 Stoneville Road
PO Box 197
Stoneville, 38776, Mississippi
United States of America
Phone : 6626863271
Fax : 6626867336
Email Vijay Nandula
Web : Web Site Link |
| | VIJAY NANDULA | Assistant Research Professor
Mississippi State University
Delta Research and Extension Center
82 Stoneville Road
PO Box 197
Stoneville, 38776, Mississippi
United States of America
Phone : 6626863271
Fax : 6626867336
Email Vijay Nandula |
| | CHARLES SNIPES | Mississippi State University
Delta Research and Extension Center
PO Box 197
Stoneville, 38776, Mississippi
United States of America
Phone : (601) 686-9311
Fax : (601) 686-3334
Email Charles Snipes |
| | JAMES TAYLOR | Mississippi State University
Dept. Plant and Soil Science
Box 955539762, Mississippi
United States of America
Phone : +1 (601) 325-7555
Email James Taylor |
| | KEVIN VAUGHN | USDA-ARS, Southern Weed Research
P.O. Box 350
Stoneville, 38776, Mississippi
United States of America
Phone : (601) 686-5211
Fax : (601) 686-5422
Email Kevin Vaughn |
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| Acknowledgements |
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Where to now? |
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The
North American Herbicide Resistance Action Committee and weed
scientists in Mississippi have been instrumental in providing you this information.
Particular thanks is given to Jason Bond, John Byrd, G. Coats, Franck Dayan, Thomas Eubank, Roy Gordon, Trey Koger, Vijay Nandula, Vijay Nandula, Charles Snipes, James Taylor, and Kevin Vaughn for providing detailed information.
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