摘要：

Regression models for potato yield (Y) and yield relative to controls (RY) in relation to soil population densities of Verticillium dahliae and Pratylenchus penetrans at planting were developed based on 8 yr of data from Ohio microplot studies. The effect of environmental variables on variability in Y and RY left unexplained by models (i.e., residuals) was then investigated. Residuals for contr...

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