| dc.description.abstract | Pollinators thrive and provide key extensive ecosystem services when provided with sufficient habitat. Tallgrass prairies can provide sufficient habitat as they are often dominated by flowering plants throughout the year that provide resources to the development of pollinators. Wild parsnip (Pastinaca sativa L.) is an invasive monocarpic species that is common throughout the midwestern United States. P. sativa invades and displaces native forbs within tallgrass prairies which reduces biodiversity of plants and pollinators. While control of P. sativa can be easily accomplished with a range of approaches, the presence of native forbs limits methods that can control P. sativa to individual plant treatments as this limits injury to desirable forbs. Florpyrauxifen-benzyl is a new herbicide that many native forbs may be tolerant to, allowing it to be broadcasted, but its effectiveness on P. sativa is not known. Another approach that could limit native forb injury but control P. sativa could be to apply glyphosate to resprouting plants after a spring burn prior to native forb emergence. Studies evaluated the effectiveness of broadcast spraying florpyrauxifen-benzyl and spot treating glyphosate after spring burn as management technique in controlling P. sativa in infested tallgrass prairies. Studies also evaluated if techniques could improve native forb populations. Three experiments were conducted over three years to evaluate if 0.9-29.4 g ai ha-1 of florpyrauxifen-benzyl broadcast controls P. sativa when applied in spring. One separate experiment was done to assess the benefit in an invaded tallgrass prairie, application of florpyrauxifen-benzyl (14.7 g ai ha-1) alone and or florpyrauxifen-benzyl (11 g ai ha-1) mixed with imazapic (35 g ae ha-1) were compared to a non-treated control. One experiment was conducted in order to evaluate the effectiveness of applying 2% glyphosate after a spring burn. Results found both approaches were successful in reducing P. sativa populations, with florpyrauxifen-benzyl removing more (90-100% reduction) than burn + glyphosate (45-52% density reduction) 2 months after treatment. While, total native forb cover decreased as a result of both approaches, the impact was not severe one year after application (< 25% cover reduction). Given that native forb response was species specific, future research should evaluate the range of tolerances that different species have to inform management approaches of P. sativa in tallgrass prairies | en_US |
