Landbrug og biologi
arable soils
10%
carbon
18%
climate
7%
composts
27%
corn
5%
corn straw
12%
crop management
10%
dissolved organic carbon
12%
drainage
74%
global warming
9%
greenhouse gas emissions
20%
growth chambers
9%
methane
71%
mineral fertilizers
9%
mineralization
9%
nitrogen fertilizers
33%
nitrous oxide
10%
nitrous oxide production
100%
nutrients
5%
paddy soils
95%
production technology
7%
rice
24%
soil
27%
soil organic carbon
10%
soil quality
8%
straw
16%
water
3%
water management
10%
Geo- og miljøvidenskab
carbon
13%
climate
4%
compost
25%
conflict
6%
crop
5%
dissolved organic carbon
7%
drainage
54%
effect
1%
experiment
3%
fertilizer
28%
global warming
6%
greenhouse gas emissions
14%
maize
14%
methane
56%
mineral
4%
mineralization
6%
nitrogen
4%
nitrous oxide
76%
nutrient
5%
organic carbon
6%
production system
8%
rice
28%
soil
31%
soil quality
8%
straw
25%
water
2%
water management
7%