Cereal cyst nematode
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Cereal cyst nematode (CNN) [1] (syn. Cereal root eelworm and Oat cyst nematode) is a plant disease caused by Heterodera avenae, Heterodera bifenestra, Heterodera hordecalis, Heterodera latipons, and Heterodera gotland in the following hosts: Avena sativa, Hordeum vulgare, Secale cereale, Triticum aestivum, and X Triticosecale. [2]