Earth & Environmental Sciences
adsorption
10%
agricultural soil
7%
biomass
12%
chemical
11%
clay
11%
complexation
7%
drain
12%
drainage water
16%
DTPA
8%
earthworm
100%
effect
9%
extraction method
8%
ferrihydrite
28%
fertility
9%
grass
53%
grassland
13%
heavy metal
10%
in situ
8%
ion
9%
iron
10%
iron oxide
28%
meta-analysis
16%
metal oxide
18%
modeling
10%
nanoparticle
26%
nitrous oxide
15%
nutrient
8%
nutrient uptake
18%
organic carbon
11%
orthophosphate
8%
oxalate
10%
oxide
26%
phosphatase
16%
phosphate
12%
phosphorus
89%
pipe
9%
porewater
12%
sand
8%
saturation
12%
sludge
7%
soil
65%
soil organic matter
21%
soil water
11%
solubility
18%
struvite
19%
superphosphate
8%
surface area
34%
timber
14%
topsoil
8%
zinc
11%
Agriculture & Biology
adsorption
7%
Allolobophora chlorotica
6%
Aporrectodea caliginosa
6%
Aporrectodea longa
6%
base saturation
5%
biomass production
15%
cation exchange capacity
5%
dissolved organic carbon
12%
earthworms
91%
extracts
10%
fertilization (reproduction)
13%
fulvic acids
10%
grasses
47%
grasslands
13%
greenhouses
7%
heavy metals
12%
humic acids
9%
iron oxides
19%
Lumbricus rubellus
8%
Lumbricus terrestris
12%
magnesium ammonium phosphate
21%
meta-analysis
16%
metals
6%
mineralization
11%
nitrous oxide
6%
nitrous oxide production
19%
nutrient uptake
14%
nutrients
7%
orthophosphates
6%
oxides
10%
phosphates
10%
phosphorus
57%
seed mixtures
5%
smelters
19%
soil
55%
soil fertility
16%
soil organic matter
16%
soil pore water
25%
soil sampling
7%
solubility
17%
structural equation modeling
5%
subsoil
8%
surface area
13%
total organic carbon
5%
triple superphosphate
8%
uptake mechanisms
23%
worm casts
52%
zinc
11%