Agriculture & Biology
incinerators
100%
sewage sludge
77%
soil chemical properties
73%
ash (inorganic matter)
65%
lettuce
63%
corn
40%
soil
22%
plant tissues
17%
superphosphate
15%
greenhouses
13%
cadmium
11%
Hapludolls
10%
fertilizers
9%
phosphorus
9%
culture media
9%
Lactuca sativa
7%
chromium
6%
trace elements
6%
nickel
6%
soil pH
6%
citrates
6%
detection limit
6%
recycling
6%
magnesium
5%
Zea mays
5%
copper
5%
sodium
4%
calcium
4%
crops
3%
tissues
2%
Earth & Environmental Sciences
incinerator
73%
sewage sludge
61%
maize
57%
chemical property
56%
ash
52%
soil
27%
tissue
18%
superphosphate
17%
DTPA
16%
incubation
16%
effect
15%
manganese
11%
cadmium
11%
fertilizer
11%
zinc
10%
rate
8%
farming system
6%
laboratory
6%
incineration
6%
trace metal
6%
chromium
5%
magnesium
5%
nickel
5%
recycling
4%
calcium
4%
sodium
4%
crop
4%
copper
4%
detection
3%