- Agricultural Research Service (ARS)
 - In-house research arm of the U.S. Department of Agriculture. - Areawide Pest Management Research Unit
- Management of an insect pest throughout its geographic range requires traditional IPM techniques and new adult management technology.
- Bee Biology & Systematics Laboratory
- Provides research information pertaining to crop pollination using wild bees. Also contains a wild bee gallery.
- Beltsville Agricultural Research Center (3)
- Coastal Plains Soil, Water, and Plant Research Center
- Conservation of water and soil, animal waste management, coloured mulch, precision farming, site specific agriculture, publication lists.
- Conservation & Production Research Laboratory
- Conducting basic and applied research on animal nutrition, waste utilization, and diseases; irrigation; water use; dryland systems; and wind power for water pumping
- Eastern Regional Research Center
- A division of the Agricultural Research Service.
- Grain Marketing & Production Research Center (GMPRC)
- Research on grain quality, integrated pest management, grain storage and handling, pest-resistant germplasm, and wind erosion.
- Great Plains Systems Research
- Develops and implements simulations models and decision support systems to improve the understanding of how agricultural systems work.
- Horticultural Crops Research Laboratory
- Lane Research Center
- Comprised of the ARS South Central Agricultural Research Laboratory and the Oklahoma State University's Wes Watkins Agricultural Research and Extension Centre.
- National Animal Disease Center (NADC)
- Conducts research to solve animal health and food safety problems faced by livestock producers and the public.
- National Genetics Resources Program
- Germplasm Resources Information Network provides germplasm information about plants, animals, microbes and invertebrates.
- North Central Regional Plant Introduction Station
- North Central Soil Conservation Research Lab
- Photosynthesis Research Unit (PRU)
- Investigates critical steps in photosynthesis as well as in-plant nutrient distribution.
- Poultry Processing and Meat Quality Research Unit
- Develops knowledge of the factors affecting poultry meat quality and microbiological safety to develop technologies that assure the delivery of wholesome poultry products to consumers.
- Small Grains and Potato Germplasm Research Unit
- Soft Wheat Quality Research Unit
- Established to study and evaluate new lines of eastern soft wheat for milling and baking qualty.
- Southwest Watershed Research Center
- Conducts basic and applied research in global change, hydrology and water resources, erosion and sedimentation, water quality, and development of improved decision support systems.
- Subtropical Agricultural Research Laboratory - SARL
- Sugarbeet Research Unit
- Basic and applied research to meet the changing needs of the sugarbeet industry.
- Tree Fruit Research Laboratory
- USDA ARS Pacific West Area Office
- Offers office locations, news, information for employees and guests, and agency links.
- USDA-ARS Urbana, IL
- Plant physiology and genetics, crop protection, and photosynthesis.
- Western Regional Research Center
- Western Wheat Quality Lab
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