Verticillium wilt in nursery trees: damage thresholds, spatial and temporal aspects

J.C. Goud, A.J. Termorshuizen, A.H.C. van Bruggen

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)

Abstract

Verticillium wilt can cause high losses in tree nurseries. To be able to predict disease and unravel disease dynamics over time and space, the relationship between verticillium wilt and soil inoculum densities of Verticillium dahliae and the nematode Pratylenchus fallax was studied in two 4-year field experiments with Acer platanoides and Catalpa bignonioides in the Netherlands. Best-fit regression equations showed that pre-planting inoculum densities of V. dahliae can be used to predict verticillium wilt over a period of at least 4 years. Pratylenchus fallax contributed significantly to disease severity in A. platanoides in some years. Disease can already occur at the detection limit of the pathogens. The 5% infection thresholds for V. dahliae were at 1 (A. platanoides) vs. 3 (C. bignonioides) colony-forming units (CFU) g-1 soil. Analysis of spatial relationships indicated that diseased plants had a higher influence on neighbouring plants at low V. dahliae inoculum densities (
Original languageEnglish
Pages (from-to)451-465
JournalEuropean Journal of Plant Pathology
Volume131
Issue number3
DOIs
Publication statusPublished - 2011

Keywords

  • soil inoculum density
  • pratylenchus-penetrans
  • woody ornamentals
  • strawberry wilt
  • potato fields
  • dahliae
  • olive
  • microsclerotia
  • colonization
  • cauliflower

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