Jönsson Study

 

Elemental Concentrations given urine dosages of 100 kg ammonia nitrogen per hectare.

SpeciesUnitUrine
application		1995
Swedish
limit		2000
Swedish
Limit		2003
US Limit		California
Limit		San Diego
County Limit
Total N
kg/ha
102
 
 
 
 
 
NH3/NH4+-N*
kg/ha
100
150
150
 
 
 
P
kg/ha
9
22
22
 
 
 
K
kg/ha
28
 
 
 
 
 
Hg
g/ha
0.01
2.5
1.5
 
 
 
Cd
g/ha
0.03
1.75
0.75
 
 
 
Pb
g/ha
0.3
100
25
 
 
 
Cr
g/ha
0.5
100
40
 
 
 
Ni
g/ha
1.7
50
25
 
 
 
Cu
g/ha
69
600
300
 
 
 
Zn
g/ha
5.5
800
600
 
 
 

*Total Kejdahl Nitrogen (TKN) is equal to the organic nitrogen plus ammonia nitrogen, NH3/NH4+-N.