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Keyphrases
Nebraska
100%
Fertilizer Timing
100%
Groundwater Quality
100%
Nitrogen Timing
100%
Quality Yield
100%
Coupling Effect
100%
Maize Yield
100%
Enhanced Efficiency Fertilizers
100%
Urease Inhibitor
85%
Dual Inhibitor
71%
Urea
57%
NO3-N Leaching
57%
Environmental Cost
28%
Nitrogen Effect
14%
Grain Yield
14%
Nitrate Leaching
14%
Groundwater Management
14%
Growing Season
14%
Pore Water
14%
Nitrification Inhibitor
14%
Public Health Risk
14%
Yield Improvement
14%
Sandy Soil
14%
Economic Returns
14%
Water Samples
14%
Groundwater Contamination
14%
N Treatment
14%
Urea Ammonium Nitrate
14%
NO3-N
14%
Fertilizer Treatment
14%
Lysimeter
14%
N Application Time
14%
Suction Cup
14%
Groundwater Nitrate
14%
Economic Health
14%
Economic-environmental
14%
On-farm Trial
14%
Management Areas
14%
Environmental Health Risks
14%
Earth and Planetary Sciences
Nebraska
100%
Nitrogen
100%
Urea
100%
Groundwater
100%
Environmental Cost
40%
Groundwater Management
20%
Growing Season
20%
Porewater
20%
Groundwater Contamination
20%
Sandy Soil
20%
Lysimeters
20%
Ammonium
20%
Nitrification
20%
Environmental Economics
20%
Porosity
20%
Agricultural and Biological Sciences
Groundwaters
100%
Urease
100%
Urea
83%
Application Timing
16%
Groundwater Contamination
16%
Nitrification
16%
Lysimeters
16%
Growing Season
16%
Sandy Soil
16%
Ammonium Nitrate
16%
Public Health
16%
Grain Yield
16%