Agriculture & Biology
soil
88%
subsurface drainage
71%
corn
71%
nitrogen
60%
drainage
59%
phosphorus
58%
soil quality
44%
nitrates
44%
water
43%
soil organic carbon
42%
cover crops
42%
soil properties
37%
soil transport processes
36%
hydrology
34%
poultry manure
34%
cropping systems
32%
ash (inorganic matter)
31%
drainage channels
30%
mineralization
30%
crops
30%
soybeans
30%
tillage
30%
stover
30%
soil blocks
29%
rye
28%
water quality
28%
Corn Belt region
28%
carbon
27%
soil profiles
26%
nitrous oxide production
25%
drainage water
25%
fluid mechanics
25%
rain intensity
25%
clay soils
24%
plant available water
24%
sediments
23%
biochar
22%
crop production
21%
corn stover
21%
climate
21%
drainage systems
21%
growth models
20%
meters (equipment)
19%
triple superphosphate
19%
soil hydraulic properties
19%
alfalfa
19%
soil physical properties
17%
bromides
17%
sediment transport
17%
pedotransfer functions
16%
Earth & Environmental Sciences
maize
100%
drainage
99%
soil
86%
nitrogen
58%
phosphorus
58%
cropping practice
52%
cover crop
49%
nitrate
49%
soybean
47%
water quality
42%
tillage
40%
septic tank
36%
loss
33%
manure
33%
health
31%
agricultural land
29%
crop
28%
management practice
28%
water
28%
carbon
25%
hydraulic property
25%
nutrient
25%
alfalfa
23%
soil property
23%
ash
23%
hydrology
22%
additive
22%
rate
19%
nitrous oxide
19%
winter
19%
drain
19%
indicator
19%
crop rotation
19%
fertilizer
18%
watershed
18%
effect
18%
North America
17%
organic carbon
17%
runoff
17%
bioreactor
17%
bromide
17%
harvest
17%
effluent
17%
soil water
16%