Francis John Richards (1901 to 1965) was an English plant physiologist who specialized in quantitative studies on the mineral nutrition requirements of crops, and who first described the general form of the generalised logistic function in 1959. Born in Burton-on-Trent, he studied botany and biochemistry at Birmingham University, graduating in 1924 and completing an MSc on fungal respiration. In 1926 he joined the Imperial College Institute of Plant Physiology at the Rothamsted Experimental Station, where he worked with F. G. Gregory to define how nitrogen, potassium and phosphorus affect cereal growth, using barley as a model. He was notable for applying R. A. Fisher's new statistical methods to such work and for introducing diagrams for the results of factorial experiments. His experiments showed that nitrogen deficiency limited respiration rate and that phosphorus deficiency impaired protein synthesis, and he showed that rubidium could partly replace some functions of potassium.
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Francis John Richards (1 October 1901 – 2 January 1965) was an English plant physiologist who specialized in quantitative studies on the mineral nutrition requirements of crops
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Francis John Richards (1 October 1901-2 January 1965) was an English plant physiologist who specialized in quantitative studies on the mineral nutrition requirements of crops
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Francis John Richards (1 October 1901-2 January 1965) was an English plant physiologist who specialized in quantitative studies on the mineral nutrition requirements of crops
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Francis John Richards (1 October 1901-2 January 1965) was an English plant physiologist who specialized in quantitative studies on the mineral nutrition requirements of crops
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Francis John Richards (1 October 1901-2 January 1965) was an English plant physiologist who specialized in quantitative studies on the mineral nutrition requirements of crops
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Francis John Richards (1 October 1901-2 January 1965) was an English plant physiologist who specialized in quantitative studies on the mineral nutrition requirements of crops
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Francis John Richards (1 October 1901-2 January 1965) was an English plant physiologist who specialized in quantitative studies on the mineral nutrition requirements of crops
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