Protected Harvest
Science, Agriculture, Sustainable Agriculture - Protected Harvest. Independently certifies and labels farmers' use of stringent environmental and sustainable growing standards.
https://www.protectedharvest.org/
The National Campaign for Sustainable Agriculture
Science, Agriculture, Sustainable Agriculture - The National Campaign for Sustainable Agriculture. Dedicated to educating the US public on the importance of a sustainable food and agriculture system that is economically viable, environmentally sound, socially just, and humane.
https://sustainableagriculture.net/
Game & Wildlife Conservation Trust Allerton Project
Science, Agriculture, Sustainable Agriculture - Allerton Research Educational Trust. Offers a practical demonstration of the integration of game and wildlife conservation with profitable farming.
https://www.allertontrust.org.uk/
Long-Term Research on Agricultural Systems
Science, Agriculture, Sustainable Agriculture - Long-Term Research on Agricultural Systems. Based at UC Davis, LTRAS is a long-term comparison of 10 conventional, organic and alternative cropping systems, both irrigated and nonirrigated.
https://ltras.ucdavis.edu/
Sustain: the alliance for better food and farming
Sustain advocates food and agriculture policies and practices that enhance the health and welfare of people and animals, improve the working and living environment, promote equity and enrich society and culture.
https://www.sustainweb.org/
Minnesota Institute for Sustainable Agriculture
Science, Agriculture, Sustainable Agriculture - Minnesota Institute for Sustainable Agriculture. Partnership between the College of Agricultural, Food, and Environmental Sciences at the University of Minnesota and the Sustainers' Coalition.
https://www.misa.umn.edu/