Netherlands Journal of Plant Pathology

, Volume 99, Issue 2, pp 61–75 | Cite as

Bioassay to assess root rot in pea and effect of root rot on yield

  • P. J. Oyarzun


Infection of pea roots by soil-borne pathogens causes foot and root rot. In 1985 research was started to develop a method to predict the root rot likely to occur in prospective pea fields. In a bioassay the pea cultivar Finale was sown in a composite soil sample from each field in pots under standardized conditions in the greenhouse. The plants were removed at the green bud stage and the severity of root rot recorded. Between 1985 and 1988 approximately 200 field pea crops were monitored for root rot development. Forty-eight fields were bioassayed in 1986, 51 in 1987 and 30 in 1988. Each year, root rot readings in the bioassay and disease severity readings at field sampled plants at flowering and green pod were linearly correlated (P<0.001). As the degree of root rot in the field crop increased, there was a proportional lower yield. In heavily infested fields, up to a 50% yield reduction occurred.

The bioassay in pots proved to be a reliable method for predicting root rot severity in sampled pea fields.

Additional keywords

Pisum sativum disease prediction soil-borne pathogens 


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Copyright information

© Koninklijke Nederlandse Planteziektenkundige Vereniging 1993

Authors and Affiliations

  • P. J. Oyarzun
    • 1
  1. 1.DLO Research Institute for Plant Protection (IPO-DLO)Wageningenthe Netherlands

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