Economic Consequences of Invasive Species Policies in the Presence of Commodity Programs: Theory and Application to Citrus Canker*

any of the effects of invasive species occur in commodity markets affectedby agricultural programs and policies, such as price and income supports,crop insurance, and trade barriers. In this paper, we focus on how policies toexclude, monitor and control, or eradicate invasive species interact with otherpolicies. We present some general arguments, drawing on parallels in theliterature on farm program impacts on the returns to agricultural research, andsome preliminary results from a case study of citrus canker.