Landbrug og biologi
ridging
100%
plowing
75%
autumn
51%
stubble
46%
barley
41%
leaching
37%
tillage
37%
straw
34%
uptake mechanisms
34%
crops
27%
ridge tillage
20%
soil transport processes
20%
soil
19%
liquid manure
18%
Corn Belt region
18%
carbon nitrogen ratio
13%
Hordeum vulgare
13%
mineralization
12%
growing season
10%
grain yield
10%
planting
10%
fertilizers
9%
winter
8%
nutrients
7%
Geo- og miljøvidenskab
plowing
79%
barley
60%
stubble
55%
autumn
54%
tillage
40%
straw
39%
soil layer
37%
leaching
29%
crop
27%
crop performance
21%
treatment residue
19%
liquid manure
18%
immobilization
13%
planting
12%
growing season
11%
harvest
11%
maize
11%
field experiment
11%
fertilizer
11%
solute
11%
incorporation
10%
mineralization
9%
nutrient
8%
winter
7%
effect
3%