Subject
plant soil relationship
soil chemistry
12
soil
10
plant
6
soil biology
6
soil physics
6
soil water
6
soil microbiology
5
cultivated plant
4
moisture
4
root
4
root growth
4
agriculture
3
groundwater
3
ecology
2
modeling
2
nutrition
2
plant breeding
2
soil pollution
2
soil protection
2
water
2
water uptake
2
wheat
2
Environmental sciences
1
Soil conservation
1
animal
1
arsenic
1
biodiversity
1
biosphere
1
cadmium
1
characterization
1
classification
1
computer simulation
1
crop
1
database system
1
deficiency disease
1
environmental health
1
environmental modeling
1
environmental significance
1
erosion
1
fertilizer
1
food production
1
formation
1
geochemistry
1
heavy metal
1
information storage and retrieval
1
interaction
1
iron
1
leaching
1
microbial metabolism
1
more ...