Some success is being had with a different varietal of alfalfa in managing leafhopper populations in southern California however there is a trade off.
Cooperative Extension Entomologist Dr. Vonny Barlow says one farmer in southern California has proven success against leafhoppers by growing hairy alfalfa. Researchers aren’t sure why the varietal works in deterring the insect, guessing it is a combination of factors. Barlow says there is a tradeoff with the different breed however. Barlow says for now it remains a tough decision for southern California growers.