Includes bibliographical references and index.

Energy and climate implications for agricultural nutrient use efficiency -- Nutrient management for improved energy efficiency -- Using precision farming to overcome yield-limiting factors in southern Brazil Oxisols: a case study -- Collecting and analyzing soil spatial information using kriging and inverse distance -- Integration of USDA-NRCS websoil survey and site collected data -- Space, time, remote sensing, and optimal nitrogen fertilization rates: a fuzzy logic approach -- Digital northern Great Plains and zone mapping application for precision agriculture -- Spatial variability of field machinery use and efficiency -- Precision manure application requirements -- Case study for improving nutrient management efficiency by optimizing the plant population -- Soil water status maps for variable rate irrigation -- Maximizing nutrient efficiency through the adoption of management practices that maintain soil organic carbon: calculating carbon turnover kinetics -- Predictive mapping of soil organic carbon: a case study using geographically weighter regression approach -- Tillage and crop residue effects on soil carbon turnover using the Michaelis-Menten approach -- Geospatial management of Andean technology by the Inca empire -- Calculating energy efficiency of applying fresh and composted manure to soil -- Quantifying greenhouse gas (CO2, CH4, and N2O) fluxes from soil in a pasture -- Improved nitrogen and energy-use efficiency using NIR-estimated soil organic carbon and N simulation modeling -- Computing wheat nitrogen requirements from grain yield and protein maps -- Review of low-and-high-technology nitrogen management approaches for improved nitrogen use efficiency -- Use of GIS-based site-specific nitrogen management for improving energy efficiency -- Geographic information and the management of animal manure -- Spatial ramifications of crop selection: water quality and biomass energy -- Estimating soil productivity and energy efficiency using the USDA web soil survey, soil productivity index calculator, and biofuel energy systems simulator.