Growth Stage of Alopecurus myosuroides Huds. Determines the Efficacy of Pinoxaden.

ABSTRACT: Alopecurus myosuroides Huds. is an important pinoxaden-resistant grass weed in many countries of Europe. Recently, the low efficacy of pinoxaden was reported in winter cereals in Croatia, but a preliminary dose-response trial showed no herbicide resistance for the investigated weed population. Therefore, a two-year experiment was conducted under greenhouse conditions to determine the efficacy of various pinoxaden doses (20, 40 and 80 g a.i. ha-1) on weed visual injuries and biomass reduction after herbicide application at different growth stages. As expected, the maximum weed biomass reduction (97.3%) was achieved by applying the highest dose (80 g a.i. ha-1) at the earliest growth stage (ZCK 12-14). A pinoxaden dose of 20 g a.i. ha-1 resulted in satisfactory weed biomass reduction (88.9%)

SUBMITTER: Pintar A 

PROVIDER: S-EPMC8068821 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature