Subject
soil
20
soil chemistry
13
plant
8
soil water
7
plant soil relationship
6
water
6
agriculture
5
modeling
5
soil science
5
cultivated plant
4
moisture
4
nitrogen
4
root
4
root growth
4
soil pollution
4
groundwater
3
water uptake
3
MRI (magnetic resonance imaging)
2
biodegradation
2
carbon cycle
2
degradation
2
denitrification
2
ecology
2
ecosystem
2
electric conductivity
2
environmental impact
2
erosion
2
evaporation
2
fertilization
2
measuring methods
2
microbial activity
2
nitrification
2
nutrient
2
organic pollutant
2
quality control
2
soil biology
2
soil microbiology
2
soil physics
2
urban area
2
wheat
2
Agriculture
1
Ecology
1
Engineering geology
1
Environmental sciences
1
Physical geography
1
Soil conservation
1
acidification
1
acidity
1
aerosol
1
animal
1
more ...