Earth & Environmental Sciences
arable land
96%
soil fertility
92%
seed
75%
grassland
71%
restoration
65%
sowing
47%
plant species
43%
straw
37%
topsoil
36%
biomass
30%
nutrient
24%
soil
21%
removal
19%
intensive farming
18%
community development
15%
weed
14%
carbon
13%
nematode
13%
microcosm
12%
immobilization
12%
plant community
11%
field experiment
10%
desert
10%
biodiversity
8%
effect
8%
organic matter
8%
bacterium
7%
history
6%
test
4%
method
2%
Agriculture & Biology
arable soils
100%
soil fertility
79%
grasslands
75%
seeds
45%
topsoil
40%
grassland restoration
38%
soil biological properties
33%
straw
33%
sowing
30%
phytomass
24%
nutrients
22%
community development
17%
carbon
16%
intensive farming
15%
fungal biomass
15%
biodiversity conservation
14%
Spermatophytina
13%
plant communities
11%
soil organic matter
11%
biomass production
10%
weeds
10%
Nematoda
9%
history
9%
bacteria
6%
testing
4%
methodology
3%