Organic Production
- University of Nebraska Center for Applied Rural Innovation's Agricultural Diversity Page
- Organic Materials Review Institute
- USDA/National Organic Program (NOP) Standards
- Nebraska Sustainable Agriculture Association
- National Sustainable Agriculture Information Service Appropriate Technology Transfer for Rural Areas (ATTRA)
- ATTRA Overview of Cover Crops and Green Manures
- ATTRA Transitioning to Organic Production
- Organic Crop Improvement Association (OCIA) Research and Education
- SARE Resource Materials on Sustainable Agriculture
Biological Control
- Association of Natural Biocontrol Producers
- Suppliers of Beneficial Organisms in North America - California Department of Pesticide Regulation
- Biological Control News
- Biological Control Information Center
- Biological Control: A Guide to Natural Enemies in North America
- Biological Control of Insect and Mite Pests
- Nematodes as Biological Control Agents of Insects
