Agriculture & Biology
subsurface drainage
77%
soil
74%
corn
67%
phosphorus
56%
drainage
54%
nitrogen
52%
nitrates
48%
water
39%
soil transport processes
39%
poultry manure
37%
cropping systems
35%
hydrology
35%
ash (inorganic matter)
34%
drainage channels
33%
stover
33%
soil blocks
32%
rye
31%
water quality
31%
Corn Belt region
31%
nitrous oxide production
28%
drainage water
28%
soybeans
28%
rain intensity
27%
plant available water
26%
sediments
25%
clay soils
25%
biochar
24%
soil properties
24%
corn stover
23%
soil profiles
23%
mineralization
23%
growth models
22%
meters (equipment)
21%
triple superphosphate
21%
crops
21%
alfalfa
21%
cover crops
20%
drainage systems
19%
bromides
19%
fluid mechanics
18%
sediment transport
18%
carbon
18%
pedotransfer functions
18%
nitrous oxide
17%
soil organic carbon
17%
infiltrometers
17%
Midwestern United States
17%
preferential flow
16%
lysimeters
16%
incinerators
16%
Earth & Environmental Sciences
drainage
100%
maize
97%
soil
67%
phosphorus
56%
nitrate
53%
nitrogen
53%
soybean
51%
water quality
46%
cropping practice
43%
cover crop
41%
septic tank
40%
tillage
38%
loss
36%
manure
36%
water
27%
alfalfa
25%
nutrient
25%
ash
25%
ditch
24%
management practice
24%
additive
24%
agricultural land
24%
hydrology
23%
clay soil
22%
nitrous oxide
21%
soil property
21%
rate
21%
carbon
21%
drain
20%
winter
20%
bioreactor
19%
bromide
19%
harvest
18%
effluent
18%
soil water
18%
farm
17%
crop rotation
17%
fertilizer
17%
watershed
17%
superphosphate
17%
mineralization
16%
soil profile
16%
lysimeter
16%
hydraulic property
16%
crop yield
15%
drainage water
15%
in situ measurement
15%
infiltrometer
14%
pedotransfer function
14%
ammonification
14%
Engineering & Materials Science
Drainage
73%
Crops
70%
Nitrates
63%
Soils
55%
Nutrients
55%
Nitrogen
54%
Water quality
45%
Hydrology
30%
Runoff
30%
Watersheds
29%
Water
22%
Phosphorus
21%
Ecosystems
19%
Rivers
16%
Tile
16%
Pesticides
15%
Sediments
12%
Bioreactors
12%
Biodiversity
12%
Biomass
11%
Water content
11%
Leaching
11%
Fertilizers
10%
Farms
10%
Wood
9%
Amino acids
8%
Manures
8%
Rocks
8%
Pathogens
8%
Carbon
7%
Availability
7%
Pollution
7%
Water levels
7%
Minerals
7%
Level control
6%
Oilseeds
6%
Surface waters
6%
Testing
6%
Rain
6%
Agricultural runoff
5%
Biogeochemistry
5%