Diseases of alfalfa result from the interactions between susceptible
alfalfa cultivars, pathogens, a conducive environment, and occasionally
from improper crop management practices. Alfalfa diseases can reduce
yields, reduce forage quality, thin or destroy stands, decrease
stand persistence, and increase susceptibility to winter kill and
other diseases and environmental stresses. The first step in managing
alfalfa diseases is prevention through proper site selection and
field management practices. The second critical step for many important
diseases is selection of disease resistant alfalfa cultivars adapted
for the area they will be planted. This site summarize symptoms,
occurrence, and management options for important alfalfa diseases
in the Midwestern U.S.
This site is under construction and materials will continue to be
added, so please check back periodically for new information.