Journal of Agricultural Science (1998) 130, 45-51

M.S. Phillips, D.L. Trudgill, C.A. Hackett, M. Hancock, J.M. Holliday and A.M. Spaull (1998)
A basis for predictive modelling of the relationship of potato yields to population density of the potato cyst nematode, Globodera pallida
Journal of Agricultural Science 130 (1), 45-51
Abstract: The relationship between initial population density of Globodera pallida and yield was examined for five genotypes of potato at four different experimental sites; two in Scotland and two in England. The experiments at each site were conducted in two stages. The experimental area was first manipulated using resistant and susceptible potato cultivars to give plots with different nematode population densities to act as the initial populations (P_i) for the second stage. The main experiment was conducted using a range of host genotypes that differed in their tolerance and susceptibility. The utility of an inverse linear model relating yield to initial population density was confirmed as were differences in cultivar tolerance. Site differences in yield loss were also observed. It was found that the model could be modified to include the partitioning of genotype and site effects. The implications of this in terms of developing further models to predict yield loss and nematode population dynamics are discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
damage/losses/economics
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Globodera pallida	Potato (Solanum tuberosum)	United Kingdom