Earth & Environmental Sciences
agricultural production
7%
carbon sequestration
13%
crop
10%
ecosystem
8%
emission factor
24%
environmental conditions
17%
environmental impact
5%
groundwater
4%
harvest
20%
land
29%
leaching
5%
mineral fertiliser
9%
nitrogen
31%
nitrous oxide
7%
production system
8%
sewage sludge
50%
simulation
3%
sludge
39%
sludge treatment
8%
Business & Economics
Agricultural Production
5%
Agroecosystems
16%
Alternatives
2%
Carbon Sequestration
15%
Crops
10%
Environmental Conditions
17%
Environmental Impact
4%
Factors
18%
Fertilizer
5%
Ground Water
7%
Harvest
17%
Minerals
5%
Model Simulation
6%
Nitrogen
50%
Nitrous Oxide
8%
Sewage Sludge
100%
Sludge Treatment
10%
Engineering & Materials Science
Carbon
13%
Crops
19%
Ecosystems
18%
Environmental impact
8%
Fertilizers
11%
Groundwater
10%
Leaching
10%
Minerals
8%
Nitrogen
48%
Nitrogen oxides
10%
Sewage sludge
77%