Cadmium was recognised as one of the major environmental and public health risk problem. The aim of this study was to assess the influence of cadmium on growth and morphology of phylloplane fungi. Discs of fungal cultures were placed on Cd amended PDA medium. Alternaria alternata, Septaria tritici, Epicoccum purpurascens, Fusarium avenaceum, Bipolaris sorokiniana were tested. Mycelial growth, morphology and sporulation were studied. All tested species differed in cadmium response. Retardation of radial growth of myceli um was observed. Changes of pigmentation, and inhibition or loss of sporulation was noted. The most sensitive to cadmium was S. tritici.

Three fungicides were tested in field experiments in Winna Góra (Wielkopolska District) in the years 1995, 1996 and 1998. Disease incidence was assessed visually before and after fungicide treatment. Isolations were performed to determine the fungus species what allowed finally evaluating the efficiency of applied fungicides. The best result were achieved with Sportak Alpha 380 EC and Folicur Plus 375 EC. Obtained results suggested that control of Fusarium foot rot could be achieved after routinely fungicide wheat treatment. The predominant species were Microdochium nivale and Fusarium culmorum.

Changes in production methods of Ericaceae ornamental plants could have caused them to become more vulnerable to weak pathogens. The aim of this study was to investigate the casual agent of Ericaceous plant damage. Plants and peat substrate were collected from two nurseries near Poznań. After isolation on agar medium and fulfilling Koch postulates it was found that the casual agent of Ericaceae ornamenta lp lant damage was Pestalotiopsis sydowiana (Bresadole) B.C. Sutton, a new species noted in Poland.

The influence of glucosinolates isolated from oilseed rape seeds on the growth of pathogenic fungi infecting oilseed rape was studied. The activity of those compounds against 3 fungal species was tested in vitro. It was stated that glucosinolates present in the medium did not totally inhibit the growth of the fungi, but considerably confined the area of colonies of 2 out of 3 fungal species studied.

The influence of oilseed rape glucosinolates on the grown in vitro pathogenic fungi was studied. Two pathogenic to oilseed rape fungi species: Fusarium roseum and Rhizoctonia so/ani were taken into consideration. It was observed that glucosinolates added to the medium limited the growth of both tested fungi to some extent, especially when higher concentrations of glucosinolates was supplied.