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Agricultural and Biological Sciences
Grassland
100%
Greenhouse Gas
70%
Trifolium repens
66%
Emission Factor
52%
Lolium perenne
50%
Urea
46%
Clay Loam Soils
44%
Permanent Grasslands
44%
Methane
34%
Urea Fertilizer
30%
Soil Organic Carbon
29%
Livestock Production Systems
29%
Carbon Dioxide
27%
Fertilizer Application
26%
Soil
25%
Biological Nitrogen Fixation
24%
Nitrogen Fertilizer
23%
Agricultural Waste
22%
Application Method
22%
Excreta
22%
Lysimeter Studies
22%
Spring
22%
Dairy Cattle
22%
Monoculture
22%
Mole Drainage
18%
Sulfuric Acid
16%
Weather
15%
Gravel
14%
Clover
12%
Grains
11%
Wind Speed
11%
Nitrification
11%
Animal Handling
11%
Mink
11%
Application Rate
11%
Pig
11%
Soil Property
11%
Cattle Manure
11%
Nutrient Management
11%
Animal Manures
11%
Reactive Nitrogen
11%
Air Pollution
11%
Confidence Interval
11%
Agricultural Product
11%
Data Processing
11%
Rotational Grazing
8%
Grazing System
8%
Grass Silage
8%
Soil Moisture
8%
Soil Temperature
8%
Earth and Planetary Sciences
Greenhouse Gas Emission
44%
Ammonia
44%
Agricultural Waste
22%
Methane
19%
Greenhouse Gas
13%
Sulphuric Acid
11%
Emission Reduction
6%