Brachiaria plantaginea resistance to ACCase-inhibiting herbicides

Abstract

Weeds are the most important causes for soybean yield losses. Alexandergrass (Brachiaria plantaginea (Link) Hitchc.) is the main grass weed in the soybean crop in the southern region of Brazil. Chemical control has been intensively used to reduce the impact of this weed on soybean. However, the selection pressure imposed by agricultural weed control resulted in several biotypes of Alexandergrass resistant to ACCase-inhibiting herbicides. The proposal of a weed management system that prevents the development of resistence can be complex, but it has lower cost when compared to management systems after resistance has been established.