29 Jun Two Hidden Sources of Productivity Growth in American Agriculture, 1860-1930
"Two Hidden Sources of Productivity Growth in American Agriculture, 1860-1930" (with William N. Parker) Agricultural History 56, October 1982, pp. 648-62
Initial paragraph
Sustained productivity growth in modern agriculture depends largely upon two complex social processes of learning. In genetic and biochem- ical technology, scientists must learn how to adjust plant varieties and animal breeds to the various and changing conditions of the natural environment....