Earth & Environmental Sciences
planning
67%
nitrogen
64%
land use
36%
transaction cost
25%
set-aside
24%
landscape management
23%
local development
23%
environmental planning
22%
crop rotation
22%
statistical data
19%
agricultural practice
19%
constructed wetland
19%
ownership
19%
rhizosphere
18%
zonation
17%
management practice
16%
fertilizer
15%
farm
15%
modeling
15%
stakeholder
14%
agricultural land
14%
leaching
13%
catchment
13%
drainage
13%
nitrate
13%
regulation
12%
valley
12%
decision
11%
land
10%
project
9%
cost
9%
trend
8%
river
8%
effect
8%
experiment
7%
Engineering & Materials Science
Nitrogen
100%
Planning
68%
Land use
65%
Wetlands
27%
Catchments
27%
Fertilizers
22%
Nitrates
22%
Leaching
21%
Crops
20%
Drainage
19%
Rivers
17%
Farms
17%
Costs
13%
Experiments
6%
Chemical Compounds
Nitrogen
65%
Crop Rotation
38%
Catchment
30%
Fertilizer
22%
Reduction
16%
Leaching
16%
Nitrate
13%