<?xml version='1.0' encoding='UTF-8'?><xml><records><record><source-app name="HighWire" version="7.x">Drupal-HighWire</source-app><ref-type name="Journal Article">17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Wiese, Jessica L</style></author><author><style face="normal" font="default" size="100%">Keren, Elai N</style></author><author><style face="normal" font="default" size="100%">Menalled, Fabian D</style></author></authors><secondary-authors></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Tolerance of native wildflower species to postemergence herbicides</style></title><secondary-title><style face="normal" font="default" size="100%">Native Plants Journal</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2011-03-20 00:00:00</style></date></pub-dates></dates><pages><style  face="normal" font="default" size="100%">31-36</style></pages><doi><style  face="normal" font="default" size="100%">10.3368/npj.12.1.31</style></doi><volume><style face="normal" font="default" size="100%">12</style></volume><issue><style face="normal" font="default" size="100%">1</style></issue><abstract><style  face="normal" font="default" size="100%">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. &amp; 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.</style></abstract></record></records></xml>