Benificial

Main Functions

N Fixation Vitamin B₁₂, Cobalamin (anzyme activator); In soybean cultivation, it acts to regulate the concentration of O₂ in the nodules, preventing their oxidation.

Absorbed Form

Co₂⁺

ION-Root Contact

Diffusion

Deficiency

Early leaf senescence

Plant mobility

Not very mobile

Source

Cobalt sulphates and nitrates

Main Functions

Osmotic Regulation (opening of stomata), can replace K in some cases.

Absorbed Form

Na⁺

ION-Root Contact

Diffusion

Deficiency

Less Development

Plant Mobility

Mobile

Source

Potassium saltpeter (NaNO3, KNO3, 12% Na) NaCl

Main Functions

Strengthening the cell wall

Absorbed Form

SiO₄^2-

ION-Root Contact

Positive Diffusion

Deficiency

Lack of stem strength and increased susceptibility to pests and pathogens

Plant Mobility

Immobile

Source

Calcium silicate and steel slag