Study of atmospheric fungi in a big cereal silo over a period of one year.

A quantitative and qualitative study of the atmospheric fungi in a big silo was carried out over a period of one year (April 1973--April 1974). About 6 to 12 Petri dishes with Czapek medium were exposed for 5 minutes every month at different floors of the silo. The study showed:--a very high number of fungi colonies, reaching as many as 903 in March 1974 (a total of 60 min exposure); the dominant fungus was penicillium which was, however, overpassed in certain months by aspergillus (flavus and fumigatus) which in May 1973 reached about twice the incidence of penicillium.