The 1997-1999 research investigated the health status of stem base of winter rye cultivated after spring cereals in pure stand, their mixtures and mixtures with yellow lupin. The lowest infection with Fusarium spp. was recorded after oats, the highest – after barley. The lowest infection with Pseudocercosporella herpotrichoides and Rhizoctonia spp. was observed after oats and oats with lupin, while the highest after triticale and oats with triticale. The pathogens occurring on stem base were represented mostly by Fusarium spp., especially F. avenaceum. The rye grain yield as affected by the forecrop did not differ significantly.

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