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Johann Friedrich Georg Hartmann Mayer (September 21, 1719 – March 17, 1798 [1]) was a German Reformed pastor and agricultural reformer, [2] who is considered one of the most important writers on agriculture of his time.
Johann Friedrich Mayer (1719–1798) was the first to present to the world a series of experiments upon it the relation of gypsum to agriculture, and many chemists have followed him in the 19th century.
Johann Friedrich Mayer was the first scientist to publish experiments on the use of gypsum as a fertilizer, but the mechanism that made it function as a fertilizer was contested by his contemporaries. [4] Agricultural science developed when analytical chemistry began to address organic compounds.
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In the mid-18th century, the German clergyman and agriculturalist Johann Friderich Mayer investigated and publicized gypsum's use as a fertilizer. [11] Gypsum may act as a source of sulfur for plant growth, and in the early 19th century, it was regarded as an almost miraculous fertilizer.
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