Characteristics of farm level yield and revenue loss that is systemic with yield and revenue loss at the county, state, and U.S. level are examined using farm yields from the Illinois and Kansas farm business management associations. The data begins with 1972. Share of yield and revenue loss...

In this paper we argue that the loss of bio-diversity hould be of concern for farmers, though it seems to be of little or no concern to them at the moment. As diversity is a component of nature that controls the growth of pests, a loss of bio-diversity means increased exposure to pests, danger...