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