Sammanfattning

The effect of fungivorous nematodes, Aphelenchus avenae and Aphelenchoides spp., against corky root disease of tomato caused by Pyrenochaeta lycopersici was investigated. Three different greenhouse trials were conducted using soil naturally infested with P. lycopersici, alone or mixed with four different types of compost consisting of green manure, garden waste and horse manure (20% compost by volume). The fungivorous nematodes were propagated in cultures of the fungus Pochonia bulbillosa and inoculated (3 or 23 nematodes ml(-1) substrate) into the soil and soil-compost mixtures one day after transplanting of tomato seedlings. Greenhouse experiments were terminated after ten weeks and disease was measured from infected roots after harvesting. Aphelenchus avenae significantly reduced the disease severity when added to infested soil without compost in all experiments. Aphelenchoides spp. did not suppress the disease either in the presence or absence of compost. Among the composts tested, only a garden waste compost was found to be suppressive to the disease. Neither A. avenae nor Aphelenchoides spp. improved the suppressive effect of the compost.

Nyckelord

Aphelenchus avenae; Aphelenchoides spp.; biological control; compost; Pyrenochaeta lycopersici; tomato

Publicerad i

Acta Agriculturae Scandinavica, Section B - Soil and Plant Science
2008, Volym: 58, nummer: 2, sidor: 145-153
Utgivare: TAYLOR & FRANCIS AS

SLU författare

• Mahbuba Kaniz, Hasna

  • Institutionen för växtproduktionsekologi, Sveriges lantbruksuniversitet
    

• Lagerlöf, Jan

  • Institutionen för ekologi, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Trädgårdsvetenskap/hortikultur
Miljö- och naturvårdsvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1080/09064710701412767

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/17946