Abstract
In Section 1 the approach of improving crop yields by the development of agriculture and addition of various mineral or organic substances in the last 200–300 years is investigated. In Section 2 the principle of randomized experiments is treated. Section 3 describes the variety trials of field crops. The elimination of effects in two dimensions is shown in Section 4 on Row–Column designs. Fertilizer trials are treated in Section 5 (qualitative factors) and in Section 6 (quantitative factors). Field trials with spatial analysis are discussed in Section 7. In Section 8 remarks on analysis and optimal experimental design are made.
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The author thanks Dr. Bert H. Janssen of the Wageningen University, the Netherlands, and Dr. Emlyn R. Williams of the Australian National University for their helpful comments of the first draft. The two reviewers of JABES are deeply thanked for the many helpful advices for the revised draft.
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Verdooren, L.R. History of the Statistical Design of Agricultural Experiments. JABES 25, 457–486 (2020). https://doi.org/10.1007/s13253-020-00394-3
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DOI: https://doi.org/10.1007/s13253-020-00394-3