Agriculture & Biology
agroecosystems
6%
alfalfa
6%
bacterial communities
12%
biomass
6%
carbon
41%
clay
9%
corn
60%
corn silage
34%
cover crops
70%
cropping systems
33%
Dactylis glomerata
8%
ecosystems
24%
forage
8%
Glycine max
8%
green manures
6%
long term effects
6%
microaggregates
8%
microbial biomass
8%
microbial carbon
41%
mineralization
31%
net primary productivity
20%
nutrient retention
7%
oats
6%
organic soils
18%
particulate organic matter
100%
particulates
62%
pastures
8%
Phaeozems
6%
Phleum
5%
plant litter
12%
Poa pratensis
13%
rye
34%
Secale cereale
6%
silage
26%
silt
12%
soil
34%
soil aggregates
81%
soil aggregation
10%
soil organic matter
35%
soybeans
12%
strip tillage
7%
temperature
12%
tillage
30%
Trifolium alexandrinum
9%
Trifolium pratense
8%
Triticum aestivum
7%
weed control
6%
wheat
5%
winter annuals
7%
Zea mays
11%
Earth & Environmental Sciences
agricultural ecosystem
7%
alfalfa
8%
biomass
11%
carbon
18%
clay
6%
community composition
7%
cover crop
42%
crop
5%
cropping practice
35%
effect
10%
enzyme activity
8%
forage
11%
green manure
7%
litter
16%
long-term effect
6%
macroaggregate
23%
maize
72%
microaggregate
7%
mineralization
23%
moisture
17%
Mollisol
5%
particulate organic matter
80%
pasture
10%
Phaeozem
5%
silt
9%
soil
32%
soil aggregate
38%
soil organic matter
30%
soybean
19%
temperature
11%
till
7%
tillage
33%
weed control
5%
wheat
8%