Earth & Environmental Sciences
meta-analysis
90%
soil carbon
83%
crop
58%
agriculture
58%
crop yield
52%
organic carbon
50%
soil
34%
tillage
34%
cropping practice
32%
cover crop
21%
management practice
14%
greenhouse gas emissions
14%
grass
14%
productivity
11%
health
11%
policy
9%
land
9%
loss
8%
effect
7%
Engineering & Materials Science
Organic carbon
100%
Crops
91%
Agriculture
89%
Soils
64%
Carbon
61%
Gas emissions
16%
Greenhouse gases
16%
Managers
14%
Productivity
13%
Health
12%
Medicine & Life Sciences
Agriculture
95%
Soil
88%
Carbon
81%
Meta-Analysis
61%
Greenhouse Gases
28%
Poaceae
20%
Bayes Theorem
20%
Practice Management
19%
Administrative Personnel
16%
Systematic Reviews
12%
Health
8%
Social Sciences
agriculture
68%
duration of studies
18%
integrated system
14%
knowledge gap
13%
productivity
9%
manager
8%
management
5%
health
5%
evidence
4%