This document discusses humic acid and fulvic acid. It defines humic acid as fully decomposed remains of organic life that are dark brown and soluble in alkaline solutions. Fulvic acid is defined as a mixture of weak organic acids that are soluble in water at all pH levels. The document outlines that humic acids have a higher molecular weight than fulvic acids. It also provides information on how humic substances are formed through the decomposition of plant and vegetable matter. The benefits of humic and fulvic acids are listed as increasing nutrient uptake, water retention, and stimulating microbial activity and plant growth. A table compares the key differences between humic acid and fulvic acid.

1. H U M I C
A C I D A N D
F U L V I C
A C I D
P r e s e n t e d b y :
B . A n i t h a ( B P 2 11 5 2 0 )

2. .
 Humic acid
 Fulvic acid
 Formation of humic substances
 Composition of humic substances.
 Benefits
 Humic acid Vs fulvic acids
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AGENDA

3. HUMIC ACIDS
 Humic acids are fully decomposed remains of organic life.
 They're long-chain molecules that are high in weight and dark brown in color.
 Humic acid" is a broad term that refers to a complex mixture of many different
acids that are soluble in alkaline solutions.
 They exist naturally as part of nature's life cycle in soils, oceans, and streams.
 Humic acids have a smaller molecular size than humins (molecular weight of
50,000 to 100,000 Da, with 1,000s of carbon rings) and are soluble in water under
alkaline conditions.
 Humic acids function as important ion exchange and chelating systems.
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4. FULVIC ACIDS
 Fulvic acids (FA) are the mixture of weak organic acids of the aliphatic and
aromatic series, which dissolve in water at all levels of pH (sour, neutral and
alkaline).
 Their composition and form are very variable.
 The molecular weight of the FA (1 000 - 10 000) is less than that of HA
 Fulvic acids - the fraction of humic substances that is soluble in water under all pH
conditions. They remains in solution after removal of humic acid by acidification.
 Fulvic acids are light yellow to yellow-brown in color.
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5. .
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6. .
.
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Fulvic Acids
Carbon 43 %
Oxygen 50 %
Hydrogen 5 %
Humus
Carbon 68 %
Oxygen 22 %
Hydrogen 6 %
Plant Vegetation
Decomposition
HumicAcids
Carbon 52 %
Oxygen 40 %
Hydrogen 5 %
slow
slow
FORMATIO
N OF
HUMIC
SUBSTANC
ES

7. BENEFITS
Increases nutrient uptake
Increases water-holding capacity in soil
Improves the overall soil structure.
Stimulates microbial activity
Regulates the pH-value of soils.
Chelates toxins from the soil.
Helps to eliminate iron chlorosis by increasing iron uptake
Improves overall plant health, helping plants better resist predators and
disease
Stimulates root growth, which increases crop volume
Increases germination
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8. Table
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HUMIC ACID FULVIC ACID
A variety of organic acids obtained from
organic constituents of humus, which is
soluble in water at certain pH levels
A variety of organic acids of the humus,
which is soluble in water at all Ph levels
Formed by fulvic acid Formed by the humification of seaweed
at about 200-250) feet underground
Black or dark brown in color Yellow to yellowish brown in color
Molecular weight is high Molecular weight is low
Not absorbed by plants Absorbed by plants
Retains moisture in the soil Carries nutrients to the plant

9. T H A N K
Y O U
B Y
B . A N I T H A
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