A risk calculator for glyphosate resistance in Lolium rigidum (Gaud.).

The article reports on the survey of 400 growers of maize, soybeans and cotton conducted in the United States to determine perceptions, experiences and management practices with glyphosate-resistant weeds. It discusses that 24% of northern growers and 39% of southern growers thought they had glyphosphate weed resistance on their farm. It infers that glyphosphate weed resistance is one of the primary problem for glyphosphate-resistant (GR) soybean and cotton planters. An overview on the glyphosphate-resistant weeds is presented.