Agriculture & Biology
grasslands
100%
Netherlands
43%
phosphorus
39%
clay soils
38%
forage crops
31%
pig manure
31%
fertilizers
30%
topsoil
29%
mineral fertilizers
27%
yield components
26%
fertilizer application
25%
animal manures
25%
nitrogen fertilizers
24%
grasses
23%
ammonium nitrate
22%
sandy soils
21%
soil
20%
minerals
19%
farmers
18%
liquids
18%
peat soils
18%
dithionite
18%
permanent grasslands
17%
intensive farming
17%
rock phosphate
16%
nitrates
16%
NPK fertilizers
16%
nitrogen
15%
oxalates
15%
surface water
14%
laws and regulations
13%
soil types
13%
leaching
12%
soil organic matter
12%
ammonium
12%
soil fertility
12%
corn
10%
calcium ammonium nitrate
10%
liquid manure
9%
liquid fertilizers
9%
nutrients
9%
springs (water)
8%
soil minerals
8%
growing season
8%
genetic trend
7%
arable soils
7%
farms
7%
crops
7%
application rate
6%
dairy cattle
6%
Earth & Environmental Sciences
fertilizer
59%
manure
51%
grassland
45%
forage crop
42%
mineral fertiliser
41%
clay soil
35%
fertilizer application
31%
ammonium nitrate
30%
climate change adaptation
30%
mineral
29%
pig
26%
replacement
25%
topsoil
25%
nitrogen
25%
slurry
25%
ammonia
21%
sandy soil
20%
soil
20%
phosphorus
19%
agricultural modeling
18%
nitrate
18%
intensive agriculture
17%
phosphate rock
16%
peat soil
16%
soil test
16%
field experiment
16%
liquid
16%
oxalate
15%
crop
14%
maize
14%
soil fertility
14%
trend
13%
ammonium
11%
farm
10%
leaching
10%
loss
9%
forage
9%
climate change
9%
growing season
9%
surface water
9%
residual soil
8%
modeling
6%
triangulation
6%
qualitative analysis
6%
trial
5%
nitrous oxide
5%
nitrogen oxides
5%
literature review
5%
calcium
5%