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  • Schmitt, A.JKI, Inst Biol Control, Darmstadt, Germany (author)

Evaluation of non-chemical seed treatment methods for the control of Phoma valerianellae on lamb’s lettuce seeds

  • Article/chapterEnglish2009

Publisher, publication year, extent ...

  • 2009
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:hig-14079
  • https://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-14079URI
  • https://gup.ub.gu.se/publication/104519URI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • The aim of the present study was to identify seed treatment methods for eradicating Phoma valerianellae from lamb’s lettuce seeds in organic vegetable production. Using seeds naturally infested with the pathogen, the effect of three physical methods (hot water, aerated steam, electron treatment) and different agents of natural origin (micro-organisms, plant derived products, resistance inducers) was tested on moist filter paper, in seed trays under controlled conditions and in the field. in an initial screening, none of the tested putative resistance inducers prevented infection by P. valerianellae, while two out of seven formulated micro-organism preparations and six out of 16 experimental microbial strains were effective. When selected agents and the three physical seed treatment methods were compared in blotter and seed tray tests, the physical methods were generally the most effective treatments, while the micro-organism treatments were clearly less efficacious. However, in field experiments with the same seed lots and the same treatments, a statistically significant increase in plant stand was not obtained with any of the treatments. Combinations of the three physical treatment methods with selected non-chemical agents did not perform better than the physical treatments alone. The most effective alternative seed treatments identified in the present study, aerated steam, hot water, electron treatment and thyme oil (0.1%), can be recommended for eradication of P. valerianellae from lamb’s lettuce seeds in organic farming. Because their efficacy was generally as high as that of the chemical fungicide Aatiram (active ingredient thiram), they are also potentially suited for use in conventional vegetable production.

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Added entries (persons, corporate bodies, meetings, titles ...)

  • Koch, E.JKI, Inst Biol Control, Darmstadt, Germany (author)
  • Stephan, D.JKI, Inst Biol Control, Darmstadt, Germany (author)
  • Kromphardt, C.JKI, Inst Strategies & Technol Assessment Plant Protec, Kleinmachnow, Germany (author)
  • Jahn, M.JKI, Inst Strategies & Technol Assessment Plant Protec, Kleinmachnow, Germany (author)
  • Krauthausen, H. -JDLR Rheinpfalz, Agr Serv Ctr, Neustadt, Germany (author)
  • Forsberg, G.Seedgard AB, Uppsala, Sweden (author)
  • Werner, S.Hild Samen GmbH, Marbach, Germany (author)
  • Amein, Tahsein,1957Gothenburg University,Göteborgs universitet,Institutionen för cell- och molekylärbiologi,Department of Cell and Molecular Biology,Dept Mol & Cellular Biol, Gothenburg, Sweden(Swepub:gu)xameta (author)
  • Wright, Sandra A. I.Gothenburg University,Göteborgs universitet,Institutionen för växt- och miljövetenskaper,Department of Plant and Environmental Sciences,Dept Plant & Environm Sci, Gothenburg, Sweden, and Univ Molise, Dipartimento Sci Anim Vegetali & Ambiente, Campobasso, Italy(Swepub:gu)xwrisa (author)
  • Tinivella, F.Univ Turin, Ctr Competence Innovat Agroenvironm Sector AGROIN, Grugliasco, Italy (author)
  • van der Wolf, J.Plant Res Int, Wageningen, Netherlands (author)
  • Groot, S. P. C.Plant Res Int, Wageningen, Netherlands (author)
  • JKI, Inst Biol Control, Darmstadt, GermanyJKI, Inst Strategies & Technol Assessment Plant Protec, Kleinmachnow, Germany (creator_code:org_t)

Related titles

  • In:Journal of Plant Diseases and Protection116:5, s. 200-2071861-3829

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