| Summary: | The influence of four pre-crop plant species on the occurrence of arbuscular mycorrhizal fungal (AMF, Glomales, Zygomycetes) spores, mycorrhizae and Phialophora graminicola (Deacon) Walker associated with roots of field-culuvated XTriticosecale Wittmack cv. Malno was investigated. The pre-crop plant species were Hordeum vutgare L., Lupinus luteus L., Pisum sativum L., and Vicia faba v. major Harz. Most spores and species of AMF were found when XTriticosecale was cultivated following P. sativum. Prior cropping with L. luteus caused the occurrence of the lowest number of spores among XTriticosecale roots. Mycorrhizal colonization of XTriticosecale was highest when planted after P. sativum and lowest when grown after L. luteus.
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