Davis, Calif.-based AgraQuest Inc. has introduced Serenade Soil, a soil-applied fungicide based on the active ingredient Bacillus subtilis strain QST 713.

It targets Rhizoctonia, Fusarium, pythium and Phytophthora in potatoes, tomatoes and cucurbits.


The product works by enveloping seeds with beneficial bacteria that outcompete pathogens, according to a news release. The bacterial colonies continue to expand as the seedling grows.