Introduction /Petra Moser --The roots of agricultural innovation : patent evidence of knowledge spillovers /Matthew Clancy, Paul Hesiey, Yongjie Ji, GianCarlo Moschini --Comment /Alberto Galasso --Quantifying heterogeneous returns to genetic selection : evidence from Wisconsin dairies /Jared...

The expansion in farm size is an important contributor to agricultural productivity in developed countries, but the reallocation process is hindered in less developed economies. How do distortions to factor reallocation affect farm dynamics and agricultural productivity? We develop a model of...