The present invention is directed to biologic-chemical fungicide
compositions (BCFs) that include one or more chemical fungicides, and
microorganisms including gram-positive and/or gram-negative bacteria and
yeast. Any chemical fungicide or combination of fungicides can be used.
The BCFs typically also include an optional nutrient component in an
amount sufficient to support the growth and replication of the
microorganisms. If the BCF is applied to soil rich in nutrients, or if
the crops would support the growth of the microorganisms in the BCFs,
then the nutrients can be left out. Compositions having a biologic
component of microorganisms in addition to one or more chemical
fungicides are significantly more effective than chemical fungicides
applied without microorganisms. The invention is also directed to
chemical-free biologic fungicides that contain microorganisms with
suppressive activity against pathogenic fungi, and nutrients.