[Surveys on the possible presence of aflatoxin and ochratoxin in corn harvested in France in 1973 and 1974].

0,1 and 1,9 p. 100 of French corn samples harvested in 1973 and 1974 contain respectively 4 to 42 ppb aflatoxin and 15 to 200 ppb ochratoxin A. Because the dilution of this product in the feed, such amounts could not be considered causing acute or chronic mycotoxicosis. In case of corn contamination by ochratoxin A, the analysis of technologic parameters conclude to question the drying corn with ears in cribs and the delayed drying after the reception of corn in storage corporation.