Boundary line models for soil nutrient concentrations and wheat yield in national-scale datasets.

ABSTRACT: In boundary line analysis a biological response (e.g., crop yield) is assumed to be a function of a variable (e.g., soil nutrient concentration), which limits the response in only some subset of observations because other limiting factors also apply. The response function is therefore expressed by an upper boundary of the plot of the response against the variable. This model has been used in various branches of soil science. In this paper we apply it to the analysis of some large datasets, originating from commercial farms in England and Wales, on the recorded yield of wheat and measured concentrations of soil nutrients in within-field soil management zones. We considered boundary line models for the effects of potassium (K), phosphorus (P) and magnesium (Mg) on yield, comparing the model

SUBMITTER: Lark RM 

PROVIDER: S-EPMC7318209 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature