The Russell Ranch archives contains samples of each crop and soil from every system from 1993 to present. The crop samples are dried, ground and packaged in vials. Crop samples include: tomato fruit, tomato vine, wheat grain, corn grain, and cover crop samples. The soils are dried, ground to 2 mm and stored in vials. Limited amounts of archive samples are available upon request. Please read the research guidelines and contact Israel Herrera with a description of your organization, research project, and amount of sample needed.