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- Title
Tolerance of native wildflower species to postemergence herbicides.
- Authors
Wiese, Jessica L.; Keren, Elai N.; Menalled, Fabian D.
- Abstract
Postemergence herbicides may facilitate weed control in native wildflower seed production fields. In a greenhouse study, we assessed the impact of 4 postemergence herbicides (linuron, halosulfuron, imazapic, and pendimethalin) on 4 wildflower species: white prairie clover (Dalea candida Michx. ex Willd. [Fabaceae]), blanketflower (Gaillardia aristata Pursh [Asteraceae]), silverleaf phacelia (Phacelia hastata Douglas ex Lehm. [Hydrophyllaceae], and prairie coneflower (Ratibida columnifera (Nutt.) Woot. & Standl. [Asteraceae]). Pendimethalin applied at 1 .9 kg ai/ha (1 .69 lb ai/ac) caused the least seedling injury across all species and therefore may help weed management in wildflower production systems. Although linuron applied at 0.56 kg ai/ha (0.5 lb ai/ac) appeared to be a promising alternative for weed control, oven-dry biomass for G. aristata was reduced by this herbicide. Imazapic and halosulfuron applied at 0.14 kg ai/ha (0.125 lb ai/ac) and 0.048 kg ai/ha (0.042 lb ai/ac), respectively, caused severe damage on wildflower seedlings.
- Subjects
WEED control; HERBICIDE research; PENDIMETHALIN; PLANT species; WILD flowers; SEEDLINGS
- Publication
Native Plants Journal (University of Wisconsin Press), 2011, Vol 12, Issue 1, p31
- ISSN
1522-8339
- Publication type
Article
- DOI
10.3368/npj.12.1.31