Agriculture & Biology
alkaline soils
100%
saline soils
94%
sewage sludge
93%
soil carbon
93%
sludge
84%
microorganisms
50%
nitrogen
45%
soil
39%
agricultural soils
38%
wastewater
24%
vegetation
12%
denitrification
10%
nitrification
10%
soil microorganisms
9%
soil fertility
7%
nitrogen fertilizers
7%
lakes
7%
minerals
6%
degradation
5%
nutrients
5%
Earth & Environmental Sciences
saline soil
95%
soil nitrogen
89%
soil carbon
79%
sewage sludge
73%
microorganism
58%
sludge
51%
soil
32%
agricultural soil
31%
immobilization
15%
wastewater
15%
vegetation
9%
soil microorganism
9%
soil fertility
8%
nitrification
7%
denitrification
6%
fertilizer
6%
decomposition
5%
plan
5%
nutrient
5%
lake
4%
mineral
4%
material
3%
rate
2%
Medicine & Life Sciences
Sewage
99%
Soil
83%
Carbon
76%
Nitrogen
76%
Waste Water
17%
Immobilization
9%
Nitrification
8%
Denitrification
7%
Fertilizers
7%
Lakes
5%
Minerals
4%
Fertility
4%
Nutrients
3%