Reducing the application rate of herbicides has proven to increase selection pressure on a
range of weeds. Delta Agribusiness senior agronomist, Tim Condon, said any saving in
chemical costs is significantly outweighed by the risk of the low dose causing faster
herbicide resistance evolution.
“Scientific studies have demonstrated that resistance can rapidly evolve in weeds
subjected to low doses of herbicide,” he said. “Some weeds can develop resistance within
a few generations.”