The studies
of chemical elements that are necessary for growth in plant are plant nutrient,
the absence of nutrient in the plant leads to incompletion of the normal life cycle of
the plant and the elements are also part of some essential plant constituent or
metabolite.
There are
seventeen (17) essential plant nutrients. Oxygen and Carbon are absorbed from
the air, while other nutrients including water are obtained from the soil. Plant
must obtain the following primary macronutrients and secondary macronutrients
mineral for growth.
Primary
macronutrients; nitrogen (N), potassium (K), phosphorus (P), Secondary
macronutrients; sulphur (S), magnesium (Mg), calcium (Ca), the macronutrient
silicon (Si), trace minerals; iron (Fe), manganese (Mn) chlorine (Cl), boron (B),
sodium (Na), selenium (Se), nickel (Ni), molybdenum (Mo), copper (Cu) and zinc
(Zn). The macronutrients are in
larger quantities and are present in plant tissue in quantities from 0.2% to
4.0%. Micro nutrients are present in plant
tissue in quantities measured in parts per million, ranging from 5 to
200 ppm, or less than 0.02% dry weight.
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| Plant nutrient |
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