Agriculture & Biology
potatoes
100%
nitrogen
90%
soil
47%
tubers
45%
nitrates
44%
corn
30%
nitrogen fertilizers
30%
polymer-coated urea
24%
ash (inorganic matter)
24%
phosphorus
22%
petioles
20%
MSW composts
20%
mineralization
19%
nutrient use efficiency
19%
crops
19%
sandy soils
18%
uptake mechanisms
18%
nutrients
17%
fertilizers
17%
cultivars
16%
cover crops
16%
leaching
16%
incinerators
15%
acrylamides
15%
irrigation management
15%
poultry manure
15%
testing
14%
Phalaris arundinacea
13%
urea
13%
biomass
13%
Solanum tuberosum
13%
growing season
12%
sand
12%
alfalfa
12%
elemental composition
12%
wood chips
12%
coarse-textured soils
11%
carbon
11%
Cyperaceae
11%
stover
11%
soil sampling
11%
potassium
11%
nitrous oxide production
10%
sap
10%
composts
10%
bioaugmentation
9%
planting
9%
soil chemical properties
9%
irrigation
9%
Earth & Environmental Sciences
potato
76%
nitrogen
50%
soil
45%
nitrate
43%
leaching
37%
urea
31%
maize
31%
fertilizer
29%
ash
29%
phosphorus
25%
tuber
20%
incinerator
19%
sugar beet
18%
alfalfa
16%
growing season
16%
manure
15%
crop
14%
irrigation
14%
rate
14%
compost
13%
byproduct
13%
effect
13%
municipal solid waste
13%
sewage sludge
12%
sedge
12%
denitrification
12%
cultivar
12%
drainage water
11%
nitrous oxide
11%
carbon
10%
cover crop
10%
loamy sand
10%
inhibitor
10%
stem
9%
bioreactor
9%
nutrient
9%
soil test
9%
land
9%
wastewater
9%
biostimulation
9%
loss
8%
outwash
8%
phosphate
8%
bioaugmentation
8%
cropping practice
8%
tissue
8%
meadow
8%
cold
7%
polymer
7%
