Agriculture & Biology
weeds
100%
willows
78%
soybeans
62%
corn
62%
Thlaspi
58%
crops
55%
weed control
54%
energy crops
53%
herbicides
46%
biomass
44%
cover crops
44%
alley cropping
42%
Heterodera glycines
40%
Panicum virgatum
36%
cropping systems
35%
soil quality
33%
Spartina pectinata
27%
soil organic carbon
26%
tillage
26%
soil
26%
shrubs
25%
Salix
24%
Ambrosia trifida
24%
Thlaspi arvense
23%
crop yield
22%
alfalfa
22%
polyculture (aquaculture)
20%
seeds
19%
Populus
19%
carbon sinks
17%
carbon
17%
nitrogen
17%
Trifolium pratense
16%
landscape position
16%
economics
16%
edge effects
16%
broadleaf weeds
16%
management systems
16%
cultivars
15%
Midwestern United States
14%
mineralization
14%
seedlings
14%
annual weeds
13%
spatial distribution
13%
biomass production
13%
Crotalaria juncea
13%
pedotransfer functions
12%
Malacosoma americanum
12%
Earth & Environmental Sciences
crop
36%
weed
29%
cover crop
28%
alley cropping
25%
health
23%
soil
22%
shrub
20%
biomass
20%
cultivar
20%
cropping practice
18%
herbicide
15%
indicator
14%
carbon
13%
tillage
12%
trial
11%
snow
11%
crop rotation
11%
organic carbon
10%
grass
10%
soybean
10%
breeding
10%
pedotransfer function
10%
aggregate stability
10%
commercialization
10%
energy crop
9%
maize
9%
genotype
9%
growth curve
8%
effect
8%
North America
8%
hydraulic property
7%
carbon stock
7%
productivity
7%
prairie
7%
viability
6%
photosynthetically active radiation
6%
coppice
6%
management practice
6%
crop yield
6%
community structure
6%
microbial community
6%
creek
6%
winter
5%
germplasm
5%
decision
5%