It is the study of chemical elements and compounds that are required for plant growth and also the supply to their external environment and internal metabolism of these substances.
NITROGEN
Necessary for formation of amino acids, the building blocks of protein
Essential for plant cell division, vital for plant growth
Directly involved in photosynthesis
Necessary component of vitamins
Aids in production and use of carbohydrates
Affects energy reactions in the plant
PHOSPHORUS
Involved in photosynthesis, respiration, energy storage and transfer, cell division, and enlargement
Promotes early root formation and growth
Improves quality of fruits, vegetables, and grains
Vital to seed formation
Helps plants survive harsh winter conditions
Increases water-use efficiency
Hastens maturity
POTASSIUM
Carbohydrate metabolism and the break down and translocation of starches
Increases photosynthesis
Increases water-use efficiency
Essential to protein synthesis
Important in fruit formation
Activates enzymes and controls their reaction rates
SULPHUR
Integral part of amino acids
Helps develop enzymes and vitamins
Promotes nodule formation on legumes
Aids in seed production
ZINC
Aids plant growth hormones and enzyme system
Necessary for chlorophyll production
Necessary for carbohydrate formation
Necessary for starch formation
MAGANESE
Functions as a part of certain enzyme systems
Aids in chlorophyll synthesis
Increases the availability of P and CA
BORON
Essential of germination of pollon grains and growth of pollen tubes
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