INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE
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Radiate Fingergrass (Chloris radiata) is a monocot weed in the Poaceae family. In Colombia this weed first evolved resistance to Group 9 (Legacy G) herbicides in 2019 and infests Rice. Group 9 (Legacy G) herbicides are known as Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
(Inhibition of EPSP synthase). Research has shown that these particular biotypes are resistant to glyphosate and they may be cross-resistant to other Group 9 (Legacy G) herbicides. The 'Group' letters/numbers that you see throughout this web site refer to the classification of herbicides by their site of action. To see a full list of herbicides and HRAC herbicide classifications click here.
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| Common Name | Radiate Fingergrass | | Species | Chloris radiata | | Group | Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
HRAC Group 9 (Legacy G)
| | Herbicides | glyphosate | | Location | Colombia, Tolima | | Year | 2019 | | Situation(s) | Rice | | Contributors - (Alphabetically) | Rafael De Prado, Veronica Hoyos, and Guido Plaza | |
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| | Greenhouse trials comparing a known susceptible Radiate Fingergrass biotype with this Radiate Fingergrass biotype have been used to confirm resistance. For further information on the tests conducted please contact the local weed scientists that provided this information. |
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| | Genetic studies on HRAC Group 9 resistant Radiate Fingergrass have not been reported to the site. There may be a note below or an article discussing the genetics of this biotype in the Fact Sheets and Other Literature |
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| | The mechanism of resistance for this biotype is either unknown or has not been entered in the database. If you know anything about the mechanism of resistance for this biotype then please update the database. |
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| | There is no record of differences in fitness or competitiveness of these resistant biotypes when compared to that of normal susceptible biotypes. If you have any information pertaining to the fitness of Group 9 (Legacy G) resistant Radiate Fingergrass from Colombia please update the database. |
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| Universidad De Cordoba
Qvimica Agricola Y Edafologa
E T S Ingenieros Agronomos
PO Box 119
Cordoba, E-14080, Andalusia
Spain
Email Rafael De Prado |
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| Universidad del Magdalena
Engineering School
Calle 32 22-08
Santa Marta, 470004, Magdalena
Colombia
Email Veronica Hoyos |
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| Associate Professor
Universidad Nacional de Colombia
Agronomy Department
Carrera 30 45-03 Edificio 500 Of 236
Bogotá, 111321, Cundinamarca
Colombia
Email Guido Plaza
Web : Web Site Link |
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| Drag a column header and drop it here to group by that column |
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1
| Colombia | Colombia | | 2019 |
Rice
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glyphosate
| 10 |
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
( HRAC Group 9 (Legacy G)
| 340 | Chloris radiata | Radiate Fingergrass | 18165 |
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2
| Colombia | Colombia | | 2019 |
Rice
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glyphosate, and imazamox
| 10 |
Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase
( HRAC Group 2 (Legacy B)
Inhibition of Enolpyruvyl Shikimate Phosphate Synthase
( HRAC Group 9 (Legacy G)
| 340 | Chloris radiata | Radiate Fingergrass | 19224 |
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Heap, I. The International Herbicide-Resistant Weed Database. Online.
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Available at
www.weedscience.org
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