The effect of block size on the errors of modern cereal experiments
- 1 April 1963
- journal article
- research article
- Published by Cambridge University Press (CUP) in The Journal of Agricultural Science
- Vol. 60 (2), 275-278
- https://doi.org/10.1017/s0021859600011564
Abstract
The errors of 454 cereal experiments organized by the National Institute for Agricultural Botany between 1956 and 1960 are examined in relation to block size. All the experiments used long, narrow plots and were harvested by combine. The most important conclusion is that the gain in efficiency by using small blocks in cereal experiments is as great now as it was before combine-harvesting and long, narrow plots were introduced. An empirical rule is that the variance per plot is roughly proportional to n½, where n is the number of plots per block.This publication has 2 references indexed in Scilit:
- An empirical law describing heterogeneity in the yields of agricultural cropsThe Journal of Agricultural Science, 1938
- Complex ExperimentsJournal of the Royal Statistical Society Series B: Statistical Methodology, 1935