Cereal Chem 72:470-474  |  VIEW ARTICLE

Distribution and Occurrence of Mycotoxins in 1993 Kansas Wheat.

D. M. Trigo-Stockli, S. P. Curran, and J. R. Pedersen. Copyright 1995 by the American Association of Cereal Chemists, Inc. 

Wheat samples from various locations in Kansas were tested for mold invasion by plating on agar medium and then analyzing for the presence of deoxynivalenol, zearalenone, and aflatoxin B1 using thin-layer chromatography. In eastern Kansas, 29 of 30 samples (96%) were invaded with Fusarium graminearum and the mean percentage of invaded kernels was 33% in northeast, 16% in east central, and 15% in southeast districts. The highest level of invasion observed was 75% on a sample from northeast Kansas. Deoxynivalenol was detected in 23 of 116 samples analyzed (20%) and was correlated highly (r = 0.839, P less than 0.001) with the level of invasion by F. graminearum. Zearalenone was detected only in one sample from northeast Kansas. Cool, wet weather during 1993 was an important factor affecting invasion and toxin formation by F. graminearum. The level of mycotoxin in 1993 Kansas wheat was relatively low.