Does plant variety intellectual property protection improve farm productivity? evidence from cotton varieties

The plant variety protection (PVP) system has been criticized by some authors as being nothing more than a marketing tool and not having much effect on productivity. We investigate this issue for the case of cotton in the United States, first by examining trends in cotton varieties planted and then...

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Bibliographic Details
Main Authors: Naseem, Anwar, Oehmke, James F., Schimmelpfenning, David E.
Format: Journal Article
Language:Inglés
Published: 2005
Subjects:
Online Access:https://hdl.handle.net/10568/172387

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