Damage thresholds and population dynamics of Meloidogyne chitwoodi on carrot (Daucus carota) at different seed densities

W.K. Heve, T.H. Been, C.H. Schomaker, M.G. Teklu

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

Yield loss of carrot (Daucus carota) cv. Nerac caused by Meloidogyne chitwoodi and population dynamics of this nematode were studied using a range of 13 nematode densities at three seed densities (2, 4, 18 seeds pot-1) in a climate-controlled glasshouse. Yield and quality data were fitted to Seinhorst’s yield models. Final population densities were fitted to the population dynamic models for sedentary and free-living nematodes. The tolerance limits for yield loss were 0.34, 0.62 and 0.50, while that of quality were 0.012, 0.142 and 0.813 second-stage juveniles (J2) (g dry soil)-1 at increasing seed densities, respectively. The minimum yield (m), increased with seed density: 0.25, 0.30 and 0.50; the minimum quality yield was 0.10, 0.08 and 0.15 J2 (g dry soil)-1 at increasing seed densities, respectively. Both maximum multiplication rates and maximum population densities increased with increasing seed density but were generally low. Carrot cv. Nerac can be considered a bad host for M. chitwoodi.
Original languageEnglish
Pages (from-to)501-514
JournalNematology
Volume17
Issue number5
DOIs
Publication statusPublished - 2015

Fingerprint

Meloidogyne chitwoodi
economic threshold
Daucus carota
carrots
population dynamics
seed
damage
seeds
nematode
population density
Nematoda
free-living nematodes
data quality
dynamic models
soil
tolerance
greenhouses
climate

Keywords

  • plant-parasitic nematodes
  • root-knot nematode
  • partial resistance
  • potato
  • cultivars
  • increase
  • hapla

Cite this

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title = "Damage thresholds and population dynamics of Meloidogyne chitwoodi on carrot (Daucus carota) at different seed densities",
abstract = "Yield loss of carrot (Daucus carota) cv. Nerac caused by Meloidogyne chitwoodi and population dynamics of this nematode were studied using a range of 13 nematode densities at three seed densities (2, 4, 18 seeds pot-1) in a climate-controlled glasshouse. Yield and quality data were fitted to Seinhorst’s yield models. Final population densities were fitted to the population dynamic models for sedentary and free-living nematodes. The tolerance limits for yield loss were 0.34, 0.62 and 0.50, while that of quality were 0.012, 0.142 and 0.813 second-stage juveniles (J2) (g dry soil)-1 at increasing seed densities, respectively. The minimum yield (m), increased with seed density: 0.25, 0.30 and 0.50; the minimum quality yield was 0.10, 0.08 and 0.15 J2 (g dry soil)-1 at increasing seed densities, respectively. Both maximum multiplication rates and maximum population densities increased with increasing seed density but were generally low. Carrot cv. Nerac can be considered a bad host for M. chitwoodi.",
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Damage thresholds and population dynamics of Meloidogyne chitwoodi on carrot (Daucus carota) at different seed densities. / Heve, W.K.; Been, T.H.; Schomaker, C.H.; Teklu, M.G.

In: Nematology, Vol. 17, No. 5, 2015, p. 501-514.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Damage thresholds and population dynamics of Meloidogyne chitwoodi on carrot (Daucus carota) at different seed densities

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AU - Been, T.H.

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KW - partial resistance

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