Chronological history by decade from
History of Research at the U.S. Department of Agriculture and Agricultural Research Service
Blue=USDA research accomplishment
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Hybrid corn allowed increases in production, more efficient use of applied fertilizer, and large-scale, mechanized harvesting.
USDA scientists developed first hog cholera vaccines.
Of gainfully employed persons, 49 percent were engaged in agriculture.
Evaporated milk developed.
Tubercle bacillus isolated by German bacteriologist. USDA scientist one of the first to chemically analyze it.
Bureau of Animal Industry established.
Refrigerated boxcars made first long-haul shipments of produce and meat.
Vedalia beetles imported from Australia to control fluted scale on citrus, the first successful biological control program of a crop pest. (more)
Controlled cottony cushion scale on citrus in California using biological control. (more)
Send comments or questions about this historical timeline to Sean Adams.