The Yields of Wheat on the Broadbalk Fields at Rothamsted
In 1919, Sir Ronald A. Fisher went to Rothamsted Experimental Station. He was hired to bring “modern statistical methods” to the task of analyzing a large amount of data collected on agricultural field trials over many years. Data had been collected on the Broadbalk field since 1844. The first experimental crop had been sown in the autumn of 1843 and harvested in 1844. Each year since, wheat has been sown and harvested on all or part of the field. The data for the yields of grain and straw for the “classical” period 1852–1925 are given in Table 5.1. From 1843–1851, many plot-treatments were varied from year to year; after 1925, parts of all plots were fallowed each year. The ten-year yields were given by Garner and Dyke (1969). The annual yields given in Table 5.1 were kindly supplied by G.V. Dyke and the late J.H.A. Dunwoody. Fisher (1921) discussed and analyzed the yield of grain for these data and Fisher (1924) discussed the influence of the rainfall. Figure 5.1 shows a recent plan of the Broadbalk field. Exhibit 5.1 gives the organic manures and inorganic fertilizers that were applied in various combinations to the plots.
KeywordsFormalin Phosphorus Magnesium Dust Silicate
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- Fisher, R.A. (1924). The influence of rainfall on the yield of wheat at Rothamsted. Phil. Trans. Roy. Soc., London B 213, 89–142.Google Scholar
- Garner, H.V. and Dyke, G.V. (1969). The Broadbalk yields. In Rothamsted Experimental Station, Report for 1968, Part 2. Harpenden, U.K.: Lawes Agricultural Trust, pp. 26–49.Google Scholar
- Grey, E. (1922). Rothamsted Experimental Station; Reminiscences, Tales and Anecdotes of the Laboratories, Staff and Experimental Fields, 1872–1922. London: Dangerfield.Google Scholar
- Johnston, A.E. and Garner, H.V. (1969). Historical introduction. In Rothamsted Experimental Station, Report for 1968, Part 1. Harpenden, U. K.: Lawes Agricultural Trust, pp. 12–25.Google Scholar
- Moffatt, J.R. (1939). Agricultural methods adopted in the Rothamsted classical and modern field experiments. Emp. J. Exp. Agric.7, 251–260.Google Scholar