Agriculture & Biology
soil organic matter
64%
cations
60%
soil
34%
A horizons
29%
cation exchange
25%
degradation
23%
nitrification
23%
mineralization
19%
lignin
16%
organic horizons
14%
biogeochemistry
14%
soil horizons
13%
mineral soils
12%
soil carbon
11%
Gymnospermae
11%
flocculation
11%
clay soils
11%
microbial biomass
10%
soil pH
9%
mineral content
9%
gardens
9%
Angiospermae
8%
plant tissues
8%
tissues
8%
nutrition
7%
minerals
7%
calcium
6%
nitrogen
5%
assays
5%
Chemical Compounds
Soil Organic Matter
100%
Soil
58%
Cation
39%
Nitrification
30%
Decomposition
25%
Mineral
23%
Lignin
19%
Cation Exchange
19%
Biogeochemistry
16%
Microbial Biomass
15%
Flocculation
10%
pH Value
8%
Nitrogen
5%
Carbon Atom
4%
Surface
3%
Earth & Environmental Sciences
soil organic matter
65%
cation
57%
soil
29%
effect
16%
decomposition
15%
tissue
11%
lignin
11%
ion exchange
9%
nitrification
9%
gymnosperm
6%
monoculture
6%
soil nitrogen
6%
angiosperm
6%
soil horizon
6%
biogeochemistry
5%
parent material
5%
garden
5%
soil carbon
5%
nutrition
5%
flocculation
5%
divergence
4%
assay
4%
stabilization
4%
rate
3%
in situ
3%
biomass
3%
laboratory
2%