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Hydraulic property measurements often rely on non-linear inversion models whose errors vary between samples. In non-linear physical measurement systems, bias can be directly quantified and removed using calibration standards. In hydrologic systems, field calibration is often infeasible and bias...
Persistent link: https://www.econbiz.de/10009435755
"In the last 200 yr, more than 80% of the land in the U.S. Corn Belt agro-ecosystem has been converted from natural perennial vegetation to intensive agricultural production of row crops. Despite research showing how re-integration of perennial vegetation, e.g., cover crops, pasture, riparian...
Persistent link: https://www.econbiz.de/10009468318
pollination systems in many areas of agriculture are threatened by the inadequacy or lack of sustainable managed, indigenous, or …
Persistent link: https://www.econbiz.de/10009468368
"Traditionally, benefits of common property arrangements arose from complementarity in resource use, which permitted multiple uses for several users. Today, common property resources (CPRs) represent quasi-public goods, featuring increasing rivalry in consumption. As the domain of uses widens...
Persistent link: https://www.econbiz.de/10009468381
"Assessing the impact of integrated natural resource management (INRM) research poses a challenge to scientists. The complexity of INRM interventions requires a more holistic approach to impact assessment, beyond the plot and farm levels and beyond traditional analysis of economic returns....
Persistent link: https://www.econbiz.de/10009468433
"The recent stagnation of productivity growth in the irrigated areas of the Indo-Gangetic Plains of South Asia has led to a quest for resource-conserving technologies that can save water, reduce production costs and improve production. The present synthesis of two detailed country studies...
Persistent link: https://www.econbiz.de/10009468459
Cointegration techniques are applied to a model of induced innovation based on the two-stage Constant Elasticity of Substitution (CES) production function. This approach results in direct tests of the inducement hypothesis, which are applied to agricultural data for the United Kingdom from 1953...
Persistent link: https://www.econbiz.de/10009429459
agriculture, for 1947-1997, and illustrates some potential pitfalls in rate of return to research (ROR) calculations. The lag …
Persistent link: https://www.econbiz.de/10009429487
We assess long-run patterns of global agricultural productivity growth between 1970 and 2005 and examine the relationship between investments in technology capital and productivity. To measure agricultural total factor productivity (TFP) we employ a Solow-type growth accounting method to...
Persistent link: https://www.econbiz.de/10009429506