Nematology (2015) 17, 193-202

Peter Mwaura, Björn Niere and Stefan Vidal (2015)
Effect of initial population densities of Ditylenchus destructor and D. dipsaci on potato tuber damage and nematode reproduction
Nematology 17 (2), 193-202
Abstract: Glasshouse experiments were conducted to evaluate the effect of initial population densities (Pi) of Ditylenchus destructor and D. dipsaci on potato tuber damage and nematode reproduction. Ditylenchus destructor did not influence tuber numbers but influenced tuber weight at high Pi levels. Ditylenchus dipsaci influenced tuber numbers and weights at a Pi level of 14.29 (g growing medium)^-1. Tolerance limit estimates according to the Seinhorst model were very low indicating both nematode species have a major impact on potato tuber weight. External and internal tuber rot caused by both species increased with Pi levels. Ditylenchus destructor caused more tuber rot than D. dipsaci at all Pi levels. Reproduction rates of D. destructor were higher at all Pi levels studied compared to D. dipsaci. The equilibrium density of 1.3 and 0.6 for D. destructor and D. dipsaci, respectively, was observed at Pi level of 14.29 (g growing medium)^-1.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Stefan Vidal

Research topic(s) for pests/diseases/weeds:
damage/losses/economics
population dynamics/ epidemiology

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Ditylenchus destructor	Potato (Solanum tuberosum)
	Ditylenchus dipsaci	Potato (Solanum tuberosum)