SPECIES OF PRATYLENCHUS ASSOCIATED WITH SOLANUM-TUBEROSUM CV SUPERIOR IN OHIO

  • 1 January 1980
    • journal article
    • research article
    • Vol. 12  (3) , 189-192
Abstract
Ohio fields (73) comprising approximately 440 ha of ''Superior'' potatoes were surveyed in 1977 for plant-parasitic nematodes. Of 8 genera of plant-parasitic nematodes, Pratylenchus was found most frequently, occurring in 65% of the soil samples and 84% of the root samples. Populations of Pratylenchus were consistently higher than populations of the other nematode genera. The 6 spp. of Pratylenchus extracted from potato roots, in descending order of frequency, were P. crenatus, P. penetrans, P. scribneri, P. alleni, P. thornei and P. neglectus. Prevalence of these Pratylenchus spp. in Ohio potato fields suggests that they could be involved with vascular wilt fungi in premature death of ''Superior'' potato vines known in Ohio as early dying.

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