Caution should be exercised in experimentation with Fusarium species only a very few Fusarium species are considered insect pathogens sensu stricto. Other Fusarium species are not insect pathogeruc or only weakly so. and they include plant pathogens, food contaminants. and mycotoxin producers These are faclors that limit the use of Fusarium species in biological control Extensive research on mass producton and field application of Fusarium species is discouraged, especially because virulenL and obligalc iungi such as Beauveria and llerarhizium species that are safe to humans are available