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Keyphrases
Grain Yield
45%
Zea Mays
43%
US Midwest
41%
No-till
40%
Strip-till
35%
Optimal Nitrogen Rate
34%
Growing Season
32%
Nitrogen Management
32%
N Rate
31%
Economic Optimum N Rate
28%
Miscanthus Sinensis
27%
Nitrogen Fertilizer
26%
Corn Yield
24%
Grassland
23%
Minnesota
23%
Potentially Mineralizable Nitrogen
23%
Potassium
21%
Fertilizer
20%
Semi-natural
19%
Nitrogen Rate
19%
Japan
19%
Urea
18%
Recommendation Tools
18%
N2O Emission
18%
Nitrous Oxide Emission
18%
Upper Midwest
18%
Top-N Recommendation
18%
Split Application
17%
Undrained Soil
16%
N Application
16%
Soil Conditions
16%
Illinois
16%
M. Sinensis
16%
Nitrogen Fertilization
15%
Glycine Max (L.) Merrill
15%
Drained Soils
15%
Maize
14%
Anhydrous Ammonia
14%
Corn Production
14%
Weather Conditions
14%
Soil Samples
13%
Midwest
13%
Kumamoto
13%
Nitrate
13%
Guatemala
13%
Subsurface Drainage
13%
Canopy Sensing
13%
Sidedress
13%
Soil Drainage
12%
K Uptake
12%
Agricultural and Biological Sciences
Grains
100%
Growing Season
58%
Fertilizer Rates
44%
Developmental Stage
39%
Miscanthus Sinensis
27%
Grassland
27%
Fertilizer Application
24%
Split Application
23%
Application Timing
21%
Spring
20%
Soil Property
19%
Nutrition Assessment
18%
Machine Learning
18%
Learning System
18%
Application Rate
17%
Coarse-Textured Soils
17%
Nitrogen Fertilizer
16%
Seeds
15%
Tile Drainage
15%
Soil Fertility
14%
Soil Carbon
14%
Nutrient Uptake
14%
Soil Organic Matter
13%
Subsurface Drainage
13%
Soil Testing
13%
Soil Health
12%
Soil Water Content
12%
Soil Water
12%
Polymer-Coated Urea
12%
Soil Quality
10%
Support Vector Machine
10%
Soil Texture
10%
Aboveground Biomass
10%
Normalized Difference Vegetation Index
9%
Miscanthus
9%
Red Edge
9%
Sandy Soil
9%
Carbon Sequestration
9%
Methane
9%
Growth Models
9%
Poorly Drained Soils
9%
Conservation Tillage
8%
Soil Sampling
8%
Water Use Efficiency
8%
Cropping System
7%
Information Systems
7%
Information Management
7%
Ammonium Nitrate
7%
Soil Organic Carbon
6%
Leaf Area Index
6%