Keyphrases
United States
100%
Manure
100%
Nitrogen Fertilizer
100%
County Level
100%
Corn Production
100%
County-level Data
100%
Developing Counties
100%
N Input
75%
N Rate
75%
Planted Area
75%
Spatially Explicit
50%
Crop-specific
50%
Producing Area
50%
N Surplus
50%
Agricultural Impacts
50%
Environmental Impact
25%
Midwest
25%
Livestock Density
25%
Fine Resolution
25%
Fertilizer
25%
Life Cycle Analysis
25%
Soil Characteristics
25%
Corn Yield
25%
Animal Manure
25%
Crop Rotation
25%
Available N
25%
Fertilizer Input
25%
Manure N
25%
Fertilizer Application Rate
25%
N Fertilizer Application
25%
Application Data
25%
N Application Rate
25%
Data Fusion Method
25%
Crop Soils
25%
Northern Plains
25%
Western State
25%
Yield Crops
25%
Conterminous US
25%
Manure Application Rate
25%
Farm Sales
25%
Rotation Characteristics
25%
Area-based Approach
25%
Farm Survey
25%
Engineering
Application Rate
100%
United States
100%
Input Data
33%
Independent Source
33%
Life Cycle Analysis
33%
Fine Resolution
33%
Great Variability
33%
Agricultural and Biological Sciences
Application Rate
100%
Nitrogen Fertilizer
100%
Fertilizer Application
33%
Animal Manures
33%
Life Cycle Engineering
33%
Farm Surveys
33%
Earth and Planetary Sciences
United States
100%
United States of America
100%
Fertilizer Application
25%
Crop Rotation
25%
Multisensor Fusion
25%
Life Cycle Analysis
25%