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Celebrating Over 90 Years of scientific excellence in agricultural sciences and human nutrition
1990-1999
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The first Plant Hardiness Zone Map for the U.S., accurate to the county level, is released.
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Studies find trans fatty acids in margarine can increase people's cholesterol levels. In addition, a study finds eggs to have 20% less cholesterol than previously thought.
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After years of research and misidentification, the cause of corn stunt disease, spiroplasma, is discovered to be the first known representative of an entirely new type of plant pathogen.
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Land is provided for the construction of the George Washington Carver Center which houses many USDA administrative offices.
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Technology to separate X and Y bearing sperm of animals is developed to allow sex selection of offspring.
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A gel formulation of formic acid is developed to control parasitic mites of honey bees.
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The Food Guide Pyramid is developed by USDA, using Beltsville research. The Nutrient Database is enhanced with information on more than 100 nutrients of 7,300 foods.
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More precise roles of nutrients are discovered such as selenium, which reduces the effects of malaria, and chromium picolinate and chromium nicotinate, which lower blood pressure in hypertensive rats.
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Ultra-low temperature storage, cryopreservation, of swine embryos is developed enabling unprecedented global transport of embryos.
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SoilGard, the first biocontrol agent for soil-borne diseases, and neem-based products for controlling both fungal diseases and insects pests are developed.
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