Agriculture & Biology
agricultural soils
5%
ammonia
23%
animal manures
52%
assets
6%
attainable yield
17%
biodiversity
6%
carbon sequestration
5%
cattle
16%
cattle manure
10%
composts
17%
confidence interval
5%
corn silage
6%
cover crops
10%
crop residues
5%
crops
26%
farms
18%
fertilizer rates
17%
fertilizers
21%
grasses
40%
grasslands
23%
greenhouse gas emissions
5%
injection
5%
leys
70%
linear programming
6%
long term experiments
16%
meta-analysis
31%
methodology
11%
mineral fertilizers
10%
nitrogen
8%
nitrogen fertilizers
49%
nutrient management
5%
nutrients
6%
organic fertilizers
5%
pig manure
16%
root crops
7%
sandy soils
5%
slurries
34%
soil fertility
30%
soil organic matter
19%
soil quality
7%
winter wheat
7%
Earth & Environmental Sciences
ammonia
21%
carbon
12%
cattle
27%
community structure
14%
crop
27%
crop production
5%
degradability
7%
effect
10%
Europe
18%
feedback mechanism
6%
fertilizer
47%
grass
47%
grassland
22%
long-term experiment
15%
maize
6%
manure
52%
mesocosm
6%
meta-analysis
30%
microbial activity
16%
microbial community
9%
mineral fertiliser
5%
mineralization
8%
nitrogen
51%
nutrient
9%
nutrient uptake
6%
organic nitrogen
30%
rate
11%
replacement
44%
root crop
7%
savings
5%
silage
6%
soil
12%
soil biodiversity
5%
soil nutrient
5%
soil organic matter
13%
soil quality
8%
tuber
6%
yield response
6%
Engineering & Materials Science
Ammonia
29%
Biodiversity
19%
Crops
21%
Dairies
9%
Fertilizers
70%
Manures
77%
Nitrogen
10%
Nitrogen fertilizers
100%
Nutrition
8%
Phosphorus
5%
Potassium
5%
Productivity
5%
Proteins
6%
Slurries
33%
Soil quality
23%