Samuel William JohnsonSamuel William Johnson (1830-1909) was a renowned American agricultural chemist and educator. He made significant contributions to the field of agricultural science, focusing on soil chemistry, plant nutrition, and crop production. Johnson's researchand writings have had a lasting impact on modern agricultural practices, emphasizing the importance of soil health and nutrient management for sustainable farming. (Biographie de l'auteur en anglais) Read More Read Less
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