Public agricultural research in the United States is conducted by state agricultural experiment stations (SAES) and by the research agencies of the USDA. Both have research activities in every state. A vast amount of research and experiments has shown that the performance of plants and to a lesser extent animals, in which new technologies are frequently embodied, is altered by local geoclimatic conditions that differ within and between states. Basic research and livestock research to some extent lead to new knowledge or technologies that spill widely across state boundaries. Thus, public agricultural research produces knowledge that is both state specific and general.
Khanna, Jyoti; Huffman, Wallace E.; and Sandler, Todd, "The Demand for Agricultural Research by State Governments" (1990). Economic Staff Paper Series. 234.