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A Soil‐Quality Index and Its Relationship to Efficiency and Productivity Growth Measures: Two Decompositions
Author(s) -
Jaenicke Edward C.,
Lengnick Laura L.
Publication year - 1999
Publication title -
american journal of agricultural economics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.949
H-Index - 111
eISSN - 1467-8276
pISSN - 0002-9092
DOI - 10.2307/1244331
Subject(s) - data envelopment analysis , index (typography) , productivity , soil quality , quality (philosophy) , econometrics , agricultural engineering , agriculture , mathematics , linear regression , economics , statistics , environmental science , computer science , soil science , soil water , geography , engineering , philosophy , archaeology , epistemology , world wide web , macroeconomics
This article reconciles two notions of soil‐quality indexes with the economic concepts of technical efficiency and productivity growth. An example uses data from the U.S. Department of Agriculture's experimental fields in Maryland and data envelopment analysis techniques to estimate a soil‐quality index consistent with the notion of technical efficiency. Common regression techniques shed additional light on the role of individual soil‐quality properties in a very restricted linear approximation of the estimated soil‐quality index.