Agriculture & Biology
animal manures
100%
alfalfa
48%
soybeans
48%
corn
43%
pig manure
40%
Phalaris arundinacea
36%
stand age
33%
nitrogen fertilizers
32%
nitrogen
31%
liquids
22%
extension education
21%
nitrapyrin
21%
autotoxicity
20%
phosphorus
19%
seed yield
18%
nitrates
18%
Trifolium alexandrinum
18%
soil
18%
cultivars
17%
residual effects
15%
dry matter accumulation
14%
grain yield
14%
chlorosis
14%
phytic acid
14%
sugar beet
13%
soil properties
13%
swine
12%
crop production
12%
villages
12%
canopy
10%
farmers
10%
forage
9%
iron
9%
oats
9%
leaf reflectance
8%
crops
8%
Zea mays
8%
lodging
7%
Medicago truncatula
7%
Glycine max
7%
isogenic lines
7%
fertilizer application
7%
polymer-coated urea
7%
urea
6%
animal manure management
6%
soluble salts
6%
dates (fruit)
6%
Earth & Environmental Sciences
manure
49%
phosphorus
33%
maize
24%
liquid manure
19%
nutrient loss
16%
soil amendment
15%
soybean
15%
dry matter
15%
drainage water
15%
fertility
13%
urea
13%
canopy
10%
trial
10%
runoff
9%
canopy reflectance
8%
rate
8%
nitrogen
8%
loss
7%
index
7%
effect
6%
sampling
6%
sediment
6%
soil test
6%
NDVI
6%
modeling
5%
Engineering & Materials Science
Manures
92%
Nutrients
24%
Phosphorus
23%
Runoff
18%
Dairies
18%
Sediments
16%
Urea
16%
Animals
14%
Drainage
14%
Farms
12%
Nitrogen
12%
Liquids
10%
Soils
10%
Potassium
10%
Sugar (sucrose)
9%
Sodium
6%
Linear regression
6%
