By Lizabeth Stahl, Extension Educator in Crops
Does glyphosate perform as well today as it did when you first used it? When producers were asked this question at University of Minnesota Private Pesticide Applicator Training sessions across southern Minnesota in 2014, 87% of the respondents said "No". This percentage is up significantly from 2009, when 55% of respondents answered "No" to this question. Increasing issues with resistance to glyphosate is likely, at least in part, behind reported reductions in weed control. To address issues of reduced weed control with glyphosate, diversification is key.