Agriculture & Biology
crop residues
79%
mineral fertilizers
76%
soil
37%
nitrogen fertilizers
33%
polyphenols
31%
soil minerals
31%
cowpeas
25%
fertilizer application
23%
immobilization in soil
19%
fertilizers
18%
Mucuna pruriens
16%
Luvisols
16%
Leucaena
16%
Leucaena leucocephala
15%
Ghana
14%
tropical plants
14%
Vigna unguiculata
13%
carbon nitrogen ratio
12%
lignin
10%
chemical composition
9%
Earth & Environmental Sciences
inorganic fertilizer
100%
crop residue
89%
fertilizer
62%
soil
31%
tropical plant
19%
treatment residue
18%
Luvisol
16%
mineral
13%
lignin
12%
immobilization
12%
plant species
10%
chemical composition
9%
rate
7%
trend
6%
effect
5%
Engineering & Materials Science
Fertilizers
93%
Crops
81%
Soils
57%
Polyphenols
40%
Minerals
16%
Lignin
10%
Chemical analysis
5%
Chemical Compounds
Fertilizer
89%
Soil
62%
Polyphenol
28%
Application
23%
Mineral
14%
Lignin
9%
Environment
5%