Variety traits

Herbicide resistance in red fescue

Festuca rubra L.

Herbicide resistance in red fescue is understood as the selective tolerance of the crop to weed control agents. It is measured by GR50 parameters, visual damage assessment, and analysis of the absorption rate of active ingredients by plant tissues.

In the reference 8 varieties crop Red fescue, where this is mentioned in the description.

Evaluating the level of resistance in red fescue involves calculating the dose that reduces biomass growth by 50 percent, as well as visual monitoring of damage symptoms such as chlorosis and necrosis for two to three weeks after application. Damage indices of five percent or less are considered evidence of high tolerance in a specific cultivar.

The expression of this trait varies significantly depending on the subspecies, for instance, between Festuca rubra ssp. rubra and ssp. commutata. The narrow leaf blade of red fescue hinders the absorption of chemicals, which influences both the strategy for weed control and breeding efforts aimed at developing cultivars capable of tolerating specific active ingredients during crop establishment.

General information about the subject — on the page Herbicide tolerance.

Sources8

Varieties of Red fescue mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.