Earth & Environmental Sciences
farming system
43%
soil fertility
41%
vegetable
41%
plateau
38%
manure
33%
nutrient balance
30%
nutrient
29%
smallholder
28%
farm
24%
organic farming
23%
earthquake
22%
ethnicity
22%
participatory approach
22%
dry season
21%
alternative agriculture
21%
environmental research
20%
school
20%
fallow
19%
dry deposition
19%
market
18%
sustainable development
17%
environmental issue
17%
land use change
17%
natural resource
16%
learning
15%
shrub
15%
crop
15%
ruminant
14%
population density
14%
food
14%
grassland
14%
ash
14%
Africa
14%
human health
13%
resource management
13%
resource
13%
landholding
13%
decision making
12%
nutrient dynamics
12%
livestock
12%
village
12%
land
11%
productivity
11%
health
11%
fixation
11%
woodland
10%
treaty
10%
biomass
10%
agricultural performance
10%
environmental regulation
9%
Agriculture & Biology
Nigeria
100%
farmers
62%
animal manure management
47%
farming systems
45%
animal manures
32%
soil fertility
30%
dry deposition
28%
wild foods
25%
nutrient balance
25%
Western Africa
23%
land use change
23%
nutrients
21%
vegetable growing
19%
organic production
17%
woodlands
17%
farms
17%
phytomass
17%
dry season
16%
plateaus
15%
small-scale farming
15%
grasslands
14%
shrubs
14%
small ruminants
13%
interviews
12%
population density
12%
Niger
11%
fertilizers
10%
soil degradation
10%
forest reserves
10%
Senegal
10%
small farms
10%
Sudan
9%
Sub-Saharan Africa
9%
livelihood
9%
natural resources
9%
shrublands
9%
crops
8%
agricultural land
8%
profits and margins
8%
villages
7%
demographic statistics
7%
questionnaires
7%
intensive farming
7%
rural population
7%
rivers
6%
rain
6%
livestock
6%
vegetation
6%
markets
5%
application rate
5%
Social Sciences
transdisciplinary
77%
Nigeria
72%
farmer
53%
environmental research
50%
fertility
29%
vegetables
26%
farm
25%
learning
24%
small farmer
23%
coproduction
22%
agriculture
21%
management
20%
interdisciplinarity
19%
food
19%
health
18%
happiness
16%
sustainable development
14%
natural resources
13%
ethnicity
12%
scenario
12%
village
11%
Contamination of soil
10%
narrative
10%
livelihood
10%
emotional development
9%
market
9%
teacher
9%
West Africa
9%
leader
9%
interaction
9%
interdisciplinary research
8%
Child health
8%
education
8%
land use
8%
user research
8%
resources
8%
schoolchild
8%
research project
7%
development policy
7%
well-being
7%
waste disposal
7%
private investment
7%
expert
7%
Niger
7%
experience
7%
animal
6%
Senegal
6%
recycling
6%
classroom
6%
evidence
6%
