 | Ohio Agricultural Experiment Station - 1928 - 886 Seiten
...of Farm Crops of the Ohio State University since 1927 in the agronomic aspects of the investigation; the Bureau of Chemistry and Soils of the United States Department of Agriculture since 1927 in the study of the correlation of soil types with corn borer abundance; and the Howard... | |
 | 1906 - 360 Seiten
...was needed for its proper classification. At our request Dr. Charles Thom, Principal Mycologist in the Bureau of Chemistry and Soils of the United States Department of Agriculture at Washington, kindly consented to study the fungus in his own laboratory, and to examine our photographs... | |
 | United States. Bureau of Fisheries - 1931 - 1330 Seiten
...necessary to supplement fish meal with these minerals. The bureau has also undertaken, in cooperation with the Bureau of Chemistry and Soils of the United States Department of Agriculture in the laboratories of the protein and nutrition division of that bureau, a cooperative research program... | |
 | United States. Bureau of Fisheries - 1923 - 866 Seiten
...exposition officially scheduled for June 21, 1930. TECHNOLOGICAL NOTES VITAMINS A AND D IN FISH OILS The Bureau of Chemistry and Soils of the United States Department of Agriculture and the Bureau of Fisheries of the United States Department of Commerce have been cooperating in a... | |
 | Puerto Rico. Agricultural Experiment Station, Mayaguez - 1918 - 814 Seiten
...United States Department of Agriculture in 1938 with funds provided bv the Government of Puerto Rico. The Bureau of Chemistry and Soils of the United States Department of Agriculture cooperate'd in the project by sending staff members to Puerto Rico on three occasions to work at the... | |
 | University of Puerto Rico (Río Piedras Campus). Agricultural Experiment Station - 1924 - 1274 Seiten
...performed for the Soil Survey of the Island. The work this season was continued with the cooperation of the Bureau of Chemistry and Soils of the United States Department of Agriculture and certain progressive sugar companies. The work of the Fajardo area surveyed with the active cooperation... | |
 | Federal Experiment Station in Puerto Rico - 1926 - 470 Seiten
...United States Department of Agriculture in 1938 with funds provided by the Government of Puerto Rico. The Bureau of Chemistry and Soils of the United States Department of Agriculture cooperated in the project by sending staff members to Puerto Rico on three occasions to work at the... | |
 | John Michels - 1927 - 682 Seiten
...director of the experiment station of the University of West Virginia, has been appointed chief of the new Bureau of Chemistry and Soils of the United States Department of Agriculture by Secretary WM Jardine. Dr. Knight is a man of broad training in chemistry, soils and agronomy, and... | |
 | Virginia. Commission on Condition of Farmers of Virginia - 1930 - 144 Seiten
...in making new outlay for farm structures. (b) Soil Erosion—It is estimated by soil scientists of the Bureau of Chemistry and Soils of the United States Department of Agriculture that erosion of the soil by rain water carries away 20 times as much plant food material every year... | |
 | 1932 - 272 Seiten
...The soils are identified and mapped in accordance with the standard system of classification used by the Bureau of Chemistry and Soils of the United States Department of Agriculture. Tnis Federal bureau contributes mappers and its usual inspection service. The soil section of the agricultural... | |
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This unit was established in 1931 by the Bureau of Chemistry and Soils of the United States Department of Agriculture for research in health hazards of food constituents and contaminants, spray residues, and insecticides. 
