Key parameters of alfalfa weevil larval mortality by Entornophthora phytonorni were compared weekly in three alfalfa fields. Rainfall appeared to be the overriding factor in seasonal larval infection rates.
Barney, Robert J. and Armbrust, Edward J.
"Key Parameter Comparisons of Fungal Induced Mortality in Alfalfa Weevil Larvae (Coleoptera: Curculionidae),"
The Great Lakes Entomologist, vol 14
Available at: https://scholar.valpo.edu/tgle/vol14/iss1/10