Source of Plant Nutrients

Source of Plant Nutrients

N, P and K are the three major plant nutrients. The primary source of the different elements are different for many plant nutrients. The plant nutrients are studied under rocks and its weathering.

In this post we will know about the primary source of the different plant nutrients

Also read: Agronomy McQ and answer

(1). Major and secondary plant nutrients
(2). Source of plant nutrients
(3). Frequently Asked Questions

(1). Major and secondary plant nutrients

1.1 Major or primary plant nutrients

  • Nitrogen.
  • Phosphorus.
  • Potash.

1.2 Sceonadry plant nutrients

  • Calcium.
  • Magnesium.
  • Sulfur.

1.3 Micronutrients

  • Molybdenum
  • Boron.
  • Iron.
  • Titanium oxide.
  • Copper.
  • Chloride.
  • Zinc.
  • Manganese.

(2). Primary Source of Plant Nutrients

Also read: Agronomy important one liner

Major elements

S.ElementSourceMajor Role
a.NO. M. or Organic MatterEssential constituent of protein.
b.Pa. Apatite
b. Iron phosphate
c. O. M.
Constituent of nucleic acid, phytin, phospholipids and ATP.
c.Ka. Micas
b. Feldspar
c. Orthoclase
d. Microline
It regulates osmo-regulation.

Secondary elements

Also read: Weed science McQ multiple choice questions

S.ElementSourceMajor Role
a.CalciumLimeIt is the constituent of middle lamella of cell wall.
b.Magnesiuma. Dolomite
b. Brucite
c. Hornblende
d. Muscovite
e. biotite
f. Olivine
g. Serpentine
h. Talc
I. Vermiculite
J. Glauconite
It is the constituent of chlorophyll.
c.Sulfura. Natural gas
b. Petroleum
It is the constituent of amino acid.

Micro elements

Also read: Seed technology multiple choice questions mcq

S.ElementSourceMajor Role
a.BoronTourmalineIt is essential for translocation of sugar.
b.MoOlivineSeveral enzymatic reactions depend on it.
c.Cua. Olivine
b. Biotite
c. Augite
d. Hornblende
e. Chalcopyrite
Activates some enzymes which are responsible for lignin synsthesis.
d.Zna. Olivine
b. Hornblende
c. Sphalerite
Formation of chlorophyll.
f.ClApatitePrimary photosynthetic reactions.
g.MnPyrolusiteIt has association with iron metabolism.
h.TiO2RutileStimulating the activity of certain enzymes.

(3). Frequently Asked Questions

Question 01. What are the examples of primary plant nutrients?

Answer: The examples of primary plant nutrients are as follows –

  • Quartz.
  • Olivine.
  • Muscovite.
  • Anothrite.
  • Orthoclase.
  • Augite.
  • Biotite.
  • Hornblende.
  • Microcline.
  • Albite.
  • Plagioclase.

Question 02. What are the examples of secondary minerals?

Answer: The examples of sceonadry plant nutrients are as follows –

  • Haematite.
  • Gibsite.
  • Geothite.
  • Gypsum.
  • Calcite.
  • Clay minerals.
  • Dolomite.


Minerals which are most resistant to weathering:

  • Quartz (it is most resistant).
  • Muscovite.

Moderate resistant minerals:

  • Feldspar.
  • Biotite.

Least resistant minerals:

  • Augite.
  • Olivine.
  • Hornblende.
  • Calcite.


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