Adjusting for fertility and competition in variety trials

M. Durban; Iain David Currie; R. A. Kempton

doi:10.1017/S0021859601008541

Adjusting for fertility and competition in variety trials

M. Durban, Iain David Currie, R. A. Kempton

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

A joint model for plot yield in response to fertility trends and interplot competition is described. The model combines the mixed model representation of a cubic smoothing spline to model fertility and a regression model with auto-regressive terms to model competition. Estimation is based on a generalization of residual maximum likelihood. The methods were applied to a series of 70 sugar beet trials conducted by the Plant Breeding Institute, Cambridge, UK, and the results summarized.

Original language	English
Pages (from-to)	129-140
Number of pages	12
Journal	Journal of Agricultural Science
Volume	136
Issue number	2
DOIs	https://doi.org/10.1017/S0021859601008541
Publication status	Published - 2001

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abstract = "A joint model for plot yield in response to fertility trends and interplot competition is described. The model combines the mixed model representation of a cubic smoothing spline to model fertility and a regression model with auto-regressive terms to model competition. Estimation is based on a generalization of residual maximum likelihood. The methods were applied to a series of 70 sugar beet trials conducted by the Plant Breeding Institute, Cambridge, UK, and the results summarized.",

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Adjusting for fertility and competition in variety trials

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