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