in order to identification of plant parasitic nematodes associated with plants in fruit orchards of west azerbaijan province, iran, a survey was conducted during 2011 and 2012. nematodes were extracted from soil and root samples by using centrifugal-flotation and whitehead's tray, transferred to glycerin and mounted in permanent slides. morphological and morphometrical characters of the specime...

Endoparasitic nematode populations are usually measured separately for soil and roots without a determination of the quantitative relation between soil and root population components. In this study, Pratylenchus penetrans populations in peppermint soil, roots, and rhizomes were expressed as the density within a standardized core consisting of 500 g dry soil plus the roots and rhizomes contained...

Eight commercial pea fields on Prince Edward Island were sampled in June and July over a 2-year period (1986-87) to determine soil population densities and the incidence of nematodes and fungi associated with root rot of peas. Root lesion nematodes (Pratylenchus spp.) were the dominant endoparasitic nematodes recovered from roots and soil. Low populations of the northern root-knot nematode (Mel...

During a survey of plant parasitic nematodes associated with Miscanthus × giganteus which was carried out in Ukraine 2016–2017, an occurrence Rotylenchus agnetis Szczygieł, 1968, pumilus Perry, 1959 and Paratylenchus nanus Cobb, 1923 found. To the best our knowledge this is first record parasite species can damage M. giganteus. The were described morphologically using molecular tools. Further p...

Plant-nematode populations associated with uncultivated vegetation, adjacent strawberry plants, and alternate crop sites were studied at three locations in Minnesota. At one site (Forest Lake), Paratylenchus projectus, Meloidogyne hapla, and Pratylenchus tenuis were frequently associated with the roots of native vegetation. These nematode species were also present in adjacent strawberry beds. A...

Pratylenchus vulnus suppressed the growth of sour orange seedlings in greenhouse experiments. Growth retardation (in height, in trunk diameter, and in dry top and root weights) was observed in inoculated plants growing in two soil types. Population density, 13 months after inoculation, averaged more than 1,000 specimens/gm of fresh root. Anatomical studies showed that P. vulnus prefers to attac...