@article{isgrigg_yelverton_brownie_warren_2002, title={Dinitroaniline resistant annual bluegrass in North Carolina}, volume={50}, ISSN={["1550-2759"]}, DOI={10.1614/0043-1745(2002)050[0086:DRABIN]2.0.CO;2}, abstractNote={Abstract Annual bluegrass control was reduced following 7 yr of continuous fall application of dinitroaniline (DNA) herbicides. Annual bluegrass control was < 40% on two fairways in year eight following prodiamine applied at 1.1 kg ai ha−1. In dose–response studies conducted in growth chambers, this annual bluegrass population exhibited 105-fold resistance in shoot growth to prodiamine compared with a known susceptible population. A 6.4-fold resistance to prodiamine was found when comparing annual bluegrass root growth to the known susceptible biotype. Spring-applied oxadiazon did not affect shoot or root growth between annual bluegrass biotypes. Equivalent levels of control were attained with pronamide. The presence of DNA-resistant annual bluegrass, in addition to previously confirmed triazine-resistant biotypes on North Carolina golf courses, indicates a need for resistance management strategies to be integrated into golf turf management practices. Nomenclature: Oxadiazon; prodiamine; pronamide; annual bluegrass, Poa annua L. POANN.}, number={1}, journal={WEED SCIENCE}, author={Isgrigg, J and Yelverton, FH and Brownie, C and Warren, LS}, year={2002}, pages={86–90} }