Landbrug og biologi
arable soils
85%
conventional tillage
10%
crop yield
16%
emissions factor
25%
fertilizer application
8%
grain quality
10%
grain yield
14%
nitrates
7%
nitrogen content
8%
nitrogen fertilizers
33%
nitrous oxide
84%
nitrous oxide production
100%
organic carbon
9%
organic nitrogen
11%
Quercus
8%
reduced tillage
35%
regression analysis
15%
soil
18%
soil water
15%
spring barley
11%
tillage
70%
Geo- og miljøvidenskab
barley
21%
cereal
20%
crop yield
19%
effect
17%
emission factor
39%
fertilizer
47%
fertilizer application
21%
flux measurement
21%
multiple regression
18%
nitrate
13%
nitrogen
11%
nitrous oxide
76%
oak
18%
organic carbon
14%
organic nitrogen
20%
rate
6%
regression analysis
16%
research center
19%
sandy loam
20%
soil
31%
soil moisture
30%
tillage
77%