Imazapic and diuron availability and toxicity in different soils

Abstract

• Herbicide residue levels can be measured in soil, but to interpret what soil analysis results mean for the subsequent crop, information about crop toxicity thresholds, and soil-specific herbicide availability is needed.
• An approach has been developed to derive toxicity thresholds and predict herbicide availability in different soils to provide a prediction of safety for cropping.
• Soil analysis for herbicide residues is not a replacement for using herbicides according to label requirements.
• Additional ground truthing of this proof-of-concept research across a wider range of soil types and environments will strengthen the predictions.