Essential nutrients

.16 nutrients

.Air

- C,H,O

.Macro nutrients

-Primary

.N,P,K

-Secondary

.Ca,Mg,S

.Micro nutrients

-Fe,Zn,Bo,Cu,Mn,CI,Mo

.13 Nutrients are to be taken from Soil

.Some elements like Sodium (Na), Silicon(Si), and Cobalt(Co) are essential for some specific group of plants. Sodium for chenopodiaceae family, Silicon for paddy and Cobalt for leguminous plants for nitrogen fixation.

.Some other nutrients are essential for animals and for some other plants at very low concentration. They are Selenium(Se), Flourine(F) and Iodine (I). Selenium essential for Astragallus species of plants.