"acremonium strictum" is generally known as a mycoparasite, as shown in its antagonistic relationship with "helminthosporium solani". "h. solani" is a potato ("solanum tuberosum") associated fungus, that has caused extreme and widespread losses in all market classes of potatoes since emerging in the united states. commonly referred to as silver scurf, "h. solani" causes blemishes that decreases the quality of the crop, making it unfit for marketing. in more severe cases, "h. solani" causes weight loss in potatoes and creates lesions in the periderm, creating entry points for other tuber pathogens. in pure cultures of "h. solani", isolates show white sectoring and rings, differential coloration and reduced sporulation in culture. upon infection of "a. strictum", cultures of "h. solani" were uniformly black, without white sectors or rings. "a. strictum" was able to significantly reduce sporulation of "h. solani" by 30%, spore germination by 20%, and mycelial growth 8% in culture. this evidence suggests that "a. strictum" may be used as a biological control agent against "h. solani", which would greatly increase potato crop yields.