6533b82efe1ef96bd1292edc
RESEARCH PRODUCT
Conséquences de l’utilisation de variétés de tournesol tolérantes aux herbicides sur la flore des agrosystèmes
Guillaume FriedValérie Le CorreTiana RakotosonJulie BuchmannÉMeline FeltenBruno Chauvelsubject
[SDV] Life Sciences [q-bio]field bordermutagénèseherbicide resistancebordure de champsrésistance aux herbicidesbordure de champs Ambrosia artemisiifoliaAmbrosia artemisiifolia effet non cible mutagénèse résistance aux herbicides bordure de champs Ambrosia artemisiifolia non-target effect mutagenesis herbicide resistance field bordereffet non ciblemutagenesisnon-target effectAmbrosia artemisiifoliadescription
The farming practices associated with the use of sunflower herbicide-tolerant varieties (HTVs) have raised concerns among public authorities, who have recommended monitoring the potential effects of HTVs on biodiversity. In this context, at the scale of three French departments, the vegetation of 239 sunflower fields and their margins was studied between 2017 and 2019. This lower weed diversity can be attributed to shorter crop rotations and higher herbicide use. Admittedly, the higher densities of A. artemisiifolia observed in plots with HTVs are the cause of the use of these varieties rather than the consequence of these practices. However, these practices do not seem to solve the problem of high ragweed infestations and thus, they increase the risk of selection of resistance of ragweed to imazamox and tribenuron. Resistant ragweeds were indeed detected on a VrTH plot
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2022-01-01 |