As a land-grant university, Mississippi State maintains a close working relationship with the USDA.

• Agricultural Research Service
  • Biological Control and Mass Rearing Research Unit
  • Crop Sciences Research Laboratory
    • Corn Host Plant Resistance Research Unit
    • Genetics and Precision Agriculture Research Unit
    • Waste Management and Forage Research Unit
  • Poultry Research Unit
  • Stoneville: Jamie Whitten Delta States Research Center
    • Application and Production Technology Research Unit
    • Catfish Genetics Research Unit
    • Cotton Ginning Research Unit
    • Cotton Physiology and Genetics Research Unit
    • Southern Insect Management Research Unit
    • Weed Science Research Unit
    • Soybean Production Research Unit
  • Stoneville:
    • Southern Regional Aquaculture Center
    • USDA: World Ag Outlook Board - Joint Ag Weather Facility
• Animal and Plant Health Inspection Service
  • Wildlife Services
  • Wildlife Services Research
• Economic Research Service
• Farm Service Agency
• Food and Nutrition Service
• Food Safety and Inspection Service
• Forest Services
  • Forest Inventory and Analysis
  • Center for Bottomland Hardwood Research
  • Wood Product Insect Research
• Mississippi Agricultural Statistics Service
• Mississippi Farm Service Agency
• Mississippi Natural Resources Conservation Services
• Mississippi Rural Development
• National Agricultural Statistics Service
• Natural Resources Conservation Services
• Rural Development