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> Fertilizers > About us > Nutrients Classification
Nutrients Classification 
 
 

NUTRIENT

CHEMICAL SYMBOL

IONIC FORM TAKEN UP BY THE PLANTS

TYPICAL CONCENTRATION IN SOILS

TYPICAL CONCENTRATION IN PLANTS

  Macronutrients

Nitrogen

N NO3- ; NH4+ 0.3 - 1 % 1.5 %

Phosphorus

P HPO42- ; H2PO4- 0.02 - 0.5 % 0.2 %

Potassium

K K+ 0.05 - 3.8 % 1 %

 Secondary nutrients

Calcium

Ca Ca2+ 0.7 % 0.5 %

Magnesium

Mg Mg2+ 0.6 % 0.2 %

Sulphur

S SO42- 30 - 500 ppm 0.1 %

 Micronutrients

Iron

Fe

Fe2+ ; Fe(OH)2+ ; Fe(OH)2+ ; Fe3+

1 - 6 % 100 ppm

Manganese

Mn Mn2+ 120 - 6000 ppm 50 ppm

Zinc

Zn Zn2+ 10 -130 ppm 20 ppm

Boron

B H3BO3 ; H2BO3- 4 - 100 ppm 20 ppm

Copper

Cu Cu3+ ; Cu(OH)+1-100 ppm  6 ppm

Molybdenum

Mo MoO42- ; HMoO4- 0.1 -40 ppm 0.1 -0.6 ppm

Cobalt

Co Co2+ 1 -40 ppm 0.1 ppm

Chloride

Cl Cl- 7 - 50 ppm 35 - 2000 ppm
 
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