However, insect pests such as the potato leafhopper can cause significant injury to the alfalfa plant at very low population levels. Vigilance is needed to accurately determine when treatment is needed. Table 5 provides a quick reference to chemical insecticides recommended for insect pests on alfalfa. Also listed in this section are specific recommendations regarding formulations and chemicals, with brief notes regarding biology, assessment, and control of specific pests. Quick Reference to Insecticides Recommended for Insect Pests Affecting Alfalfa.
Ranges indicate dosage-dependent preharvest limitation.
Use is restricted to certified applicators. The information provided herein is supplied with the understanding that no discrimination is intended and no endorsement by Ohio State University Extension is implied. The authors have assembled the most reliable information at the time of publication. Due to changing laws and regulations, Ohio State University Extension assumes no liability for the recommendations.