Earth & Environmental Sciences
intercropping
81%
carbon footprint
64%
forage
59%
fertilizer
47%
grass
47%
productivity
38%
nitrogen
32%
sward
31%
nitrous oxide
22%
wheat
20%
incorporation
18%
aboveground production
18%
life cycle
17%
biological nitrogen fixation
17%
cover crop
14%
fertilizer application
12%
barley
12%
mineral
12%
crop yield
11%
cropping practice
10%
pasture
10%
field experiment
9%
global warming
9%
grassland
9%
crop
7%
rate
7%
winter
6%
Engineering & Materials Science
Nitrogen fertilizers
100%
Fertilizers
70%
Carbon footprint
68%
Productivity
43%
Crops
36%
Minerals
22%
Nitrogen fixation
21%
Life cycle
18%
Oxides
18%
Global warming
12%
Nitrogen
10%
Experiments
3%
Chemical Compounds
Nitrogen Fertilizer
94%
Fertilizer
67%
Purity
27%
Carbon Atom
25%
Red
22%
Biological Nitrogen Fixation
18%
Mineral
17%
Reaction Yield
8%
Application
6%
Nitrogen
6%
Reduction
5%