Explaining the Decline in UK Agricultural Productivity Growth
研究了1953-2000年英国农业全要素生产率增长，发现1984年后增速从1.68%骤降至0.26%，落后于欧盟领先国家，主要原因是研发削减、专利减少、农场规模增长放缓和公共推广消亡。
This paper reports the results of a study of total factor productivity (TFP) growth in UK agriculture, from 1953‐2000. It shows that prior to 1984 TFP grew at 1.68% per annum and after that date at only 0.26%. International comparisons show that the UK has fallen far behind the leading EU countries. Yield growth declined even more and only labour productivity continues to grow rapidly. In part, the result is due to better data that incorporates more quality adjustment, but the real decline can be explained mainly by cuts in R&D, less patents, less growth in farm size and the demise of public extension. There are other negative factors, which have not been quantified, including asset fixity, convergence and ozone pollution, and a background argument that recent growth rates cannot be sustained.