Biology and Fertility of Soils

, Volume 24, Issue 1, pp 13–17 | Cite as

Relationships between soil penetration resistance and soif nematode burden in barley on Prince Edward Island

  • L. M. Edwards
  • J. Kimpinski
Original Paper
Received:

Abstract

Fifty sloping fields of barley with different short-term cropping histories across Prince Edward Island were examined for variations in root-zone depth and the severity of soil parasitic nematodes as part of a wider study of relationships between cropping sequence, topographic position, soil physical conditions and crop performance. Root lesion nematode (Pratylenchus penetrans) density in the roots was significantly greater (13%) at foot slopes than at top slopes, and stunt nematode (Tylenchorhynchus spp.) was significantly greater (8%) at top slopes where the soil was drier. The density of stunt nematodes and root lesion nematodes in the soil was significantly greater (>15%) under miscellaneous cereals-barley sequences than under potato-barley or hay-barley, attributable to level of carryover. Root lesion nematode density in the roots was significantly greater (12%) under hay-barley than either of the other two sequences. This nematode also showed a strong tendency to increase in number with increasing root-zone depth, and may be explained on the basis that increased root-zone depth provides increased host root mass (substrate). Stunt nematodes, on the other hand, increased with decreasing root-zone depth and may be explained by the known propensity of these organisms for drier, shallower soil conditions.

Key words

Barley Cropping histories Parasitic nematodes Pratylenchus penetrans Root lesion nematode density Stunt nematode Tylenchorhynchus spp 
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Copyright information

© Springer-Verlag 1997

Authors and Affiliations

  • L. M. Edwards
    • 1
  • J. Kimpinski
    • 1
  1. 1.Charlottetown Research CentreAgriculture and Agri-Food CanadaPrince Edward IslandCanada

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