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The impact of seed industry concentration on innovation: a study of US biotech market leaders
被引：0
|作者：
Schimmelpfennig, DE
Pray, CE
Brennan, MF
机构：
[1] Econ Res Serv, USDA, Resource Econ Div, Washington, DC 20036 USA
[2] Rutgers State Univ, Dept Agr Food & Resource Econ, Piscataway, NJ USA
[3] Rutgers State Univ, Cook Coll, Res Off, Piscataway, NJ USA
关键词：
industrial organisation;
biotechnology R&D;
D O I：
10.1016/j.agecon.2002.11.001
中图分类号：
F3 [农业经济];
学科分类号：
0202 ;
020205 ;
1203 ;
摘要：
Agricultural research drives increases in agricultural productivity, and the number of private agricultural input firms has been declining. The empirical relationship between the number of firms doing applied biotechnology crop research and the amount of research output they produce is investigated in a research profit function model. Increases in seed industry concentration have reduced biotech research intensity in the United States in the 1990s. Concentration and research are simultaneously determined and are influenced by the appropriability of research results and the state of technological opportunity. (C) 2003 Elsevier B.V. All rights reserved.
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页码：157 / 167
页数：11
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