On the Variation of Yield Variance With Plot Size

The problem examined is that of evaluating the spatial covariance function of yield density, from a knowledge of the way yield variance varies with plot size and shape. Results are obtained in § 3 for several kinds of plot. Results are also obtained (§ 4) on the dependence of the yield variance on plot geometry for very small and very large plots. Special attention is paid to the case for which the covariance follows a power law at large distances.