File:Exhibit concerning fertilizer values - DPLA - 7e8c0794f575fff32104bf3fe6dfaa30.jpg
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editExhibit concerning fertilizer values ( ) | |||||||||||||||||||||
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Title |
Exhibit concerning fertilizer values |
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Description |
U.S. Department of Agriculture exhibition display concerning fertilizer values as determined by per cent of plant food. The display includes several photographs of a range of agricultural crops, including wheat, cotton, corn, potatoes, and sugar beets, as well as a diagram highlighting fertilizer components like nitrogen, phosphoric acid, and potash. The display likely drew on the the work of the U.S.D.A.'s Fixed Nitrogen Research Laboratory located in Washington, D.C. The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American University in 1919 under the directorship of Arthur B. Lamb. Initially part of the War Department, the F.N.R.L. was the successor to several wartime initiatives to develop a secure domestic supply of nitrate compounds necessary for the manufacture of explosives during World War I. With a staff of about 110 individuals, including 35 to 50 chemists, the F.N.R.L. focused on the manufacture, production, and development of products of atmospheric nitrogen, including munitions and fertilizers. |
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Date | Circa 1926 | ||||||||||||||||||||
Collection |
institution QS:P195,Q5090408 |
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Permission (Reusing this file) |
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Standardized rights statement InfoField |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:17, 4 October 2022 | 3,502 × 2,734 (852 KB) | DPLA bot (talk | contribs) | Uploading DPLA ID 7e8c0794f575fff32104bf3fe6dfaa30 |
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Orientation | Normal |
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Horizontal resolution | 400 dpi |
Vertical resolution | 400 dpi |