In a host study of the ectoparasitic nematodeLongidorus cohni, involving six field crops, only oats were found to afford rapid nematode population build-up and to suffer severe damage. No increase in nematode population, plant damage or root symptoms was observed on wheat, barley, purple vetch, field pea or berseem clover.
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Cohn, E., Mordechai, M. Specificity oflongidorus cohni as a pathogen of oats. Phytoparasitica 2, 45–46 (1974). https://doi.org/10.1007/BF02981071