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- Title
Slippage in the Conservation Reserve Program or Spurious Correlation? A Rejoinder.
- Authors
Roberts, Michael J.; Bucholz, Shawn
- Abstract
The Conservation Reserve Program (CRP) pays farmers about $2 billion per year to retire cropland under ten- to fifteen-year contracts. Recent research by Wu (2000) found that slippage—an unintended stimulus of new plantings—offsets some of CRP's environmental benefits. In a comment on Wu, we argued CRP enrollments were endogenous and confounded by omitted variables. In his reply, Wu (2005) used results from a Hausman test to argue that CRP enrollments are exogenous. In this rejoinder, we explain why the candidate instrument (erodibility) is likely confounded by omitted variables, so Wu's use of the Hausman test is uninformative.
- Subjects
AGRICULTURAL policy; ACREAGE allotments; AGRICULTURAL administration; CROPLAND conversion program; AGRICULTURAL sociology; FARMERS
- Publication
American Journal of Agricultural Economics, 2006, Vol 88, Issue 2, p512
- ISSN
0002-9092
- Publication type
Article
- DOI
10.1111/j.1467-8276.2006.00875.x