Field performance of Solanum sisymbriifolium, a trap crop for potato cyst nematodes. II. Root characteristics

B.G.H. Timmermans, J. Vos, T.J. Stomph, J.G.W. van Nieuwburg, P.E.L. van der Putten

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)

Abstract

Hatching of potato cyst nematodes is induced by root exudates of Solanaceae, such as Solanum sisymbriifolium, and is therefore related to root length distribution of this crop. A mathematical model was derived to relate the hatching potential to root length density (RLD). A series of field experiments was carried out to study actual root length distribution of S.¿sisymbriifolium in relation to shoot properties and to provide input into the model. Using a modified Poisson distribution formula for the three-dimensional distribution of roots in a volume of soil, the relation between the zone of influence of hatching agents and the RLD could be derived. On this basis, the minimal RLD was estimated, which is needed to expose 75%, 90% or 95% of cysts to root exudates, as a function of the length of the zone of influence of hatching agents on cysts. The logarithm of the total root length showed a linear relation with the logarithms of above-ground biomass and with leaf area index. Root diameter distribution was the same for all crops examined and independent of soil depth. Fine roots (
Original languageEnglish
Pages (from-to)99-106
JournalAnnals of Applied Biology
Volume150
Issue number1
DOIs
Publication statusPublished - 2007

Keywords

  • nitrogen catch crops
  • globodera-pallida
  • soil
  • growth
  • rostochiensis
  • diffusate
  • water
  • host
  • date

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