Earth & Environmental Sciences
soil
100%
phosphorus
91%
organic waste
56%
slurry
51%
sewage sludge
45%
wheat
42%
fertilizer
40%
manure
34%
nitrogen
30%
straw
25%
organic carbon
25%
leaching
24%
maize
22%
carbon
22%
effect
21%
turnover
21%
nutrient uptake
21%
cattle
19%
drying
19%
nutrient
18%
pig
17%
acidification
17%
carbon stock
17%
compost
17%
soil fertility
16%
trial
15%
genotype
15%
agriculture
15%
fractionation
15%
ash
15%
Agriculture & Biology
soil
83%
phosphorus
66%
sewage sludge
58%
organic wastes
34%
fertilizers
28%
spring wheat
28%
uptake mechanisms
24%
nutrient uptake
22%
soil fertility
22%
nutrients
21%
straw
21%
soil organic matter
21%
Penicillium
20%
root growth
20%
corn
19%
root hairs
17%
soil organic carbon
17%
wheat straw
16%
grasslands
16%
Denmark
15%
carbon
15%
ash (inorganic matter)
15%