Mobility of the nutrients

Elements that are used in large quantities in plants are the macro nutrients and those which are essential but are used in small amounts are the micros.

Nutrients that are mobile in the plants will not show symptoms of deficiencies in the new leaves, whereas immobile nutrients will not be transferred to new leaves when deficiencies occur.

Nutrients that are mobile in the soil will be leached out by rain or excess irrigation and will need to be replenished.  Areas of the globe that experience greater than 40 inches of rain per year will tend to have soils with depleted mobile nutrients.

NO3- is nitrate nitrogen and NH4+ is ammonium.

 

Nutrient

Macro/micro

Uptake form

Mobility in Plant

Mobility in Soil

Carbon

Macro

CO2, H2CO3

 

 

Hydrogen

Macro

H+, OH, H2O

 

 

Oxygen

Macro

O2

 

 

Nitrogen

Macro

NO3, NH4+

Mobile 

Mobile as NO3, immobile as NH4+

Phosphorus

Macro

HPO42-, H2PO4

Somewhat mobile

Immobile

Potassium

Macro

K+

Very mobile

Somewhat mobile

Calcium

Macro

Ca2+

Immobile

Somewhat mobile

Magnesium

Macro

Mg2+

Somewhat mobile

Immobile

Sulfur

Macro

SO4

Mobile 

Mobile

Boron

Micro

H3BO3, BO3

Immobile

Very mobile

Copper

Micro

Cu2+

Immobile

Immobile

Iron

Micro

Fe2+, Fe3+

Immobile

Immobile

Manganese

Micro

Mn2+

Immobile

Mobile

Zinc

Micro

Zn2+

Immobile

Immobile

Molybdenum

Micro

MoO4

Immobile

Somewhat mobile

Chlorine

Micro

Cl

Mobile 

Mobile

Cobalt

Micro

Co2+

Immobile

Somewhat mobile

Nickel

Micro

Ni2+

Mobile 

Somewhat mobile

This table is courtesy Cornell University.