Success StoryAlfalfa weevil insecticide resistance identified



Alfalfa weevil insecticide resistance identified

Author: Ricardo Bessin

Planning Unit: Entomology

Major Program: Integrated Pest Management

Outcome: Initial Outcome

In early summer of 2021, a producer in central Kentucky (largest produce in the state) reported insecticide failure with control of alfalfa weevil. Smalls were collect, reared in the laboratory and bioassyed for effectiveness to available insecticides for that pest. Bioassys indicated that the alfalfa weevils on that farm were highly resistent to pyrethroid insecticides and other effective alternative insecticides were recommended.  This is the first evidence of eastern opulations of alfalfa weevil with resistance to pyrethroids.






Stories by Ricardo Bessin


Private Applicator Training and Certification Program

about 4 months ago by Ricardo Bessin

The university of Kentucky manages and administers the Private Pesticide Applicator training and cer... Read More


Stories by Entomology


Providing Science base Information to Banana Growers of the Dominican Republic on an New Invasive Pest in the Caribbean Region

Providing Science base Information to Banana Growers of the Dominican Republic on an New Invasive Pest in the Caribbean Region

about 3 months ago by Raul Villanueva

The Dominican Republic was the first producer of organic bananas during past years but in 2023 it wa... Read More


Potential issues with grub control on mountain tops

about 3 months ago by Jonathan Larson

Stone Crest Golf Course in Prestonsburg, KY contacted Kenneth Clayton (Extension associate in Plant ... Read More