A 9-year monitoring study of diseases on potato seed tubers imported to Israel

Leah Tsror, A. Nachmias, Orly Erlich, M. Aharon, M. C.M. Pérombelon

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Potato seed tubers are imported annually to Israel from northern Europe. Although the seed is registered as certified, a survey carried out over a 9-year period indicated that most lots were affected by latent or active bacterial and fungal infections. Latent infection by Erwinia carotovora subsp. atroseptica, the causal agent of blackleg, at a level of 103 cells/g peel, was present in 30% of the lots in most years. Black scurf caused by Rhizoctonia solani was present in 20–70% of the imported lots, with a moderate to high level of infection in all years except 1985. In contrast, although many lots were affected by powdery scab, common scab, and Fusarium dry rot in most years, disease incidence within lots was generally low. The gangrene pathogen (Phoma exigua) was rarely detected. The survey findings are of marked importance, due to the extensive use of soil fumigation in Israeli agriculture.

Original languageEnglish
Pages (from-to)321-328
Number of pages8
JournalPhytoparasitica
Volume21
Issue number4
DOIs
StatePublished - 1 Jan 1993
Externally publishedYes

Keywords

  • Erwinia carotovora
  • Fusarium dry rot
  • Phoma exigua
  • Rhizoctonia solani
  • Spongospora subterranea
  • Streptomyces scabies
  • black leg
  • black scurf
  • common scab
  • gangrene
  • powdery scab

ASJC Scopus subject areas

  • Plant Science
  • Insect Science

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