Geo- og miljøvidenskab
climate conditions
6%
crop production
92%
economy
4%
effect
1%
energy
41%
energy use
90%
fertilizer
73%
fertilizer application
7%
index
6%
indicator
50%
manure
11%
mineral
13%
mineral fertiliser
7%
nitrogen
3%
norm
11%
organic fertiliser
7%
parameter
8%
production system
6%
rate
27%
standardization
6%
wheat
5%
Landbrug og biologi
cow manure
14%
crop production
79%
energy
50%
Estonia
7%
fertilizer application
5%
fertilizer rates
100%
mineral fertilizers
6%
minerals
18%
nitrogen
3%
nitrogen fertilizers
5%
organic fertilizers
6%
production technology
5%
spring wheat
6%
standardization
6%
subarctic climates
10%