Recommendations from the Forestry Board
Recommended levels |
||
Substance |
Lowest |
Maximum |
Macro Nutrients g/kg (dry matter) |
||
calcium |
125 |
|
magnesium |
15 |
|
potassium |
30 |
|
phosphorus |
7 |
|
Tracers, mg/kg (dry matter) |
||
Boron |
|
800 |
Copper |
|
400 |
Zinc |
500 |
7000 |
Arsenic |
|
30 |
Lead |
|
300 |
Cadmium |
|
30 |
Chromium |
|
200 |
Mercury |
|
3 |
Nickel |
|
70 |
Vanadium |
|
70 |