Earth & Environmental Sciences
green manure
100%
rice
50%
nutrient
39%
barley
39%
cover crop
37%
productivity
33%
biomass
32%
methanogenesis
31%
seeding
30%
denitrification
29%
wetland
25%
methane
25%
phosphorus
23%
nitrogen
22%
soil
19%
carbon
18%
incubation
17%
sediment
15%
flowering
15%
greenhouse gas emissions
13%
nutrient availability
12%
slurry
10%
effect
10%
ammonium
9%
lignin
8%
crop
8%
cellulose
7%
electron
7%
substrate
7%
trophic status
6%
chemical composition
6%
nitrite
5%
laboratory
5%
acetate
5%
Agriculture & Biology
temperate soils
52%
Vicia villosa
44%
paddy soils
42%
denitrification
40%
green manures
39%
methane production
35%
wetlands
32%
sediments
30%
cover crops
26%
barley
26%
phosphorus
24%
sowing
22%
carbon
21%
biomass
20%
nitrogen
19%
nutrients
14%
rice
12%
greenhouse gas emissions
8%
nutrient availability
7%
legumes
7%
ammonium
6%
paddies
5%
electrons
5%
Engineering & Materials Science
Manures
46%
Nutrients
41%
Methane
31%
Productivity
26%
Biomass
18%
Lignin
10%
Soils
9%
Cellulose
9%
Soil quality
7%
Organic carbon
6%
Chemical analysis
5%