The Influence of Cultivars, Location and Climate on Deoxynivalenol Contamination in Norwegian Oats 1985–1990

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Abstract
Samples of five oat cultivars, grown on seven experimental stations, located in different parts of Norway during 1985–1990 were analysed for deoxynivalenol (DON). Considerable geographical differences in the DON concentration were observed. The mean DON concentration was found to be highest in 1988 and 1989. These years were both characterized by early summer drought, but while the amount of precipitation in July was about normal in 1989, heavy, rainfall was observed at that time in 1988. The lowest DON concentration was found in 1987 and 1990, two years with very different weather. Only small differences were found between the cultivars. No relationship was found between the moisture content in the grain at harvest and the DON content.