A number of weed specialists are growing concerned about a developing trend of herbicide resistant weeds that under normal circumstances were well controlled by the herbicides being applied to them. Paul Baumann of Texas AgriLife Extension says the repetitive use of these herbicides in a given crop has lead to development of resistant biotypes.
"Therefore if they are in a population of the same type of species or the same species that is being controlled and that susceptible population is being removed this allows the resistant ones to flourish," Baumann said.
Although weed resistance is not new the concern has grown with the wide use of glyphosate, which Baumann says producers have over-relied upon for years. He and other researchers are working on alternative weed management programs.