Identification of two Eleusine indica (goosegrass) biotypes of cool-season turfgrass resistant to dithiopyr.

ABSTRACT:

Background

Turfgrass managers reported poor Eleusine indica control following applications of the mitosis-inhibiting herbicide dithiopyr in cool-season turfgrass. Field, glasshouse, and laboratory experiments were conducted to understand the response of these biotypes to dithiopyr and prodiamine.

Results

In field experiments at two locations with putative dithiopyr-resistant E. indica, preemergence applications of dithiopyr provided no E. indica control. Single applications of the protoporphyrinogen oxidase (PPO)-inhibitor, oxadiazon, provided > 85% control at these locations. When subjected to agar-based bioassays, root growth of putative resistant biotypes planted with 0.01 mmol L^-1 dithiopyr was slightly reduced (< 25%) whereas roots were completely inhibited i

SUBMITTER: Elmore MT 

PROVIDER: S-EPMC9293289 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature