Agricola - Citations to agricultural literature via the National Agricultural Library.
U.S. Department of Agriculture (USDA) - All resources here are to expand economic opportunity through innovation, helping rural America to thrive; to promote agricultural production sustainability that better nourishes Americans while also helping feed others throughout the world; and to preserve and conserve our Nation's natural resources through restored forests, improved watersheds, and healthy private working lands.
Agricultural Statistics/National Agricultural Statistics Service - Data and statistics by quick stats, state, and subject, also county-level information.
Ag Data Commons - Provides access to a wide variety of open data relevant to agricultural research and related domains such as agronomy, genomics, hydrology, soils, agro-ecosystems, sustainability science, and economic statistics. Data included in the Ag Data Commons is funded in whole or in part by USDA.
Census of Agriculture - Census of Agriculture is the leading source of facts and figures about American agriculture. Conducted every five years, the Census provides a detailed picture of U.S. farms and ranches and the people who operate them.
Economic Research Service - Provides economic research and information to inform public and private decision-making on economic and policy issues related to agriculture, food, natural resources, and rural America.