Interaction between saflufenacil and ammonium glufosinate to control ryegrass.

Annual ryegrass (Lolium multiflorum Lam.) is one of the main weeds in subtropical cropping systems of Europe, Oceania and South America. Therefore, the hypothesis of this work is that the interaction between ammonium glufosinate and saflufenacil can be synergistic for ryegrass control.

The safener isoxadifen-ethyl confers fenoxaprop-p-ethyl resistance on a biotype of Echinochloa crus-galli.

Background: Some herbicides are commercially formulated with safeners to increase crop selectivity. Fenoxaprop-p-ethyl is formulated with the safener isoxadifen-ethyl for Echinochloa crus-galli control in rice. Safeners act on crops by increasing herbicide metabolism, but this effect may also occur in weeds.