Sclerotinia crown and stem rot, also called white mold, can be one of the most destructive diseases of alfalfa. The pathogen that causes this disease, Sclerotinia trifoliorum, infects the alfalfa ...

Phytophthora is known as “the plant destroyer.” Skip to content. NOWCAST WDSU News at 6pm. ... The crown rot pathogen thrives in poorly drained, heavily compacted soils.