Pacific Northwest Direct Seed Association
- Information regarding direct deeding farming methods. This site supports both growers and the extended industry. The environmental impact of these methods are also discussed.
- http://www.directseed.org

Rolf Derpsch
- Information about reduced tillage and no tillage practices, links to publications.
- http://www.rolf-derpsch.com/

Alberta Reduced Tillage Linkages
- Sustainable cropping and direct seeding information featuring a larger agronomy library.
- http://www.reducedtillage.ca/

Steep III (Solutions To Environmental and Economic Problems)
- Information on conservation tillage practices in the Pacific Northwest.
- http://pnwsteep.wsu.edu/

Reducing Nitrate in Water Resources with Modern Farming Systems
- Account of research showing lower rates of nitrate leaching from soil with reduced tilling practices.
- http://www.idea.iastate.edu/idea/marketplace/pdf/fs_waving.pdf

No--Till.com
- Brief information and a collection of links about the practice.
- http://www.no--till.com/

No-Tillage Farming for Sustainable Land Management
- Detailed FAO account of how soil erosion and other problems have been alleviated in Brazil.
- http://www.fao.org/tc/tci/Occpap12.pdf

No-Till Farmer Newsletter Online
- Providing the world's no-tillage farmers with ideas, inventions, techniques and industry news.
- http://www.lesspub.com/ntf