This document shows the role humic acid plays when combine with other element.

1. The Combination between Humic Acid
with NPK & Other Elements under the
fertigation background
2015.06

2. Early seed germination, high germination rate
Quick Seeding root, more secondary
root, increase root biomass
Improve quality and quantity, promote
precocity
Promote Growth
Promote the formation of soil
aggregate structure
Adjust the Soil PH value
Promote microbial activity
Improve soil cation exchange
capacity,
CEC value
Retain water and
nutrients
Antifungal
Prevent root rot
Decrease disease
and Inspect pest
Fix N, Active P and K
Chelated insoluble tract elements
Absorb heavy mental
decrease pollution
Improve crop nutrient absorption and
utilization
Fertilizer efficiency
HA
Improve
Fertilizer
performance
Stimulate
Physiological
Metabolism
Improve
Soil
Structure
Enhance
Stress
Tolerance
TBIO CROP SCIENCE 01

3. Content
:
Nitrogen
Slow release Nitrogen
01 Phosphorus02
Potassium03 Elements04
TBIO CROP SCIENCE 02
Active Phosphorus
Chelate insoluble TE to soluble
Absorbed HM
Fix Potassium

4. TBIOCROP SCIENCE 03
WHY
NEED
SLOW
RELEASE
N
Decompose
H2NCONH2 →NH2COOH+NH3→(NH4)2CO3→
CO2+2NH3+H2O→H2CO3+2NH3
(Urease,H2O, 30℃ ,2days)
Volatilize
NH4HCO3→CO2+NH3
(24-25℃ ,7days)
Nitrification
2NH4⁺+3O2→2NO2⁻+2H2O+4H⁺ (1)
(Nitrite bacteria)
2NO2⁻+O2→2NO3⁻ (2)
(Nitrification bacteria)

5. The Mechanism of Urea plus Humic Acid
TBIOCROP SCIENCE 04
HA with Urea 100days
• Inhibition of urease activity in soil about 100days.
• This inhibition will be gradually decreased .
42-50%
Inhibition of Nitrification bacteria activity.
The Nitrogen in soil will be remain42%-50% more by
adding 2%-20% HA after 62days.
HA with
Ammonium hydrogen
carbonate or Ammonia
All of the oxygen functional groups of HA join this reaction and meanly reacted
with Carboxyl group .
The HA with more active functional group has the most strong reaction with
urea, it formed more water soluble RCOONH4 and >C=N groups.
Formula: R-COOH+NH3 → RCOONH4
Formula: R-COOH+NH2CONH2→ RCOOH NH2CONH2

6. TBIOCROP SCIENCE 05
Inversion
How
TO
ACTIVE
P
(RCOO)2Me+H3PO4 = 2R-COOH+MeHPO4
Active
6R-COOH+Ca3(PO4)2 = 3(R-COO)Ca+2H3PO4
2R-COOH+Ca3(H2PO4)2 = (R-COO)2Ca+2H3PO4
2R-COONH4+CaHPO4 = (R-COO) 2Ca+(NH4)2HPO4
R-COOK+Ca3(PO4)2 = R-COOK Ca3(PO4)2
Protection of soluble P
Increase dissolution of insoluble P
1.R-COOH means humic acid with one Carboxyl group.
2.Me means Ca Mg ions.

7. TBIOCROP SCIENCE 06
How
TO
FIX
K
Prevent K fixed by soil
Decrease the lose of K with water
FIX
R-COOH+KCL = R-COOK +HCL (1)
2R-COOH+K2SO4 = 2RCOOK+H2SO4 (2)

8. TBIOCROP SCIENCE 07
WHAT
REACTION
WITH
TE&HM Complex
Chelate
The complex ability between HM and
HA significant decrease with the
increase molecular weights.The main
reason is small molecular HA have
more biding site than bigger
For example,
Toxic Cr⁶⁺ will be deoxidized to Cr ⁺ by HA as
the formed complex with HA. This will restrict it
absorbed by crops.
3
R
COO
O
+Zn 2+
R
COOH
OH
Zn+2H⁺
(Increased solubility of zinc and ability of HA to form stable complexes with zinc)

9. TBIO CROP SCIENCE 08
THE INFLUENCE OF HA
ON AVALABILITY AND
UPTAKE IN TOMATO

10. Analysis Data
TBIO CROP SCIENCE 09
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200
N
P
K
M2S3 M1S1
•Soil Application
•M1: 100% Dose of NPK
•M2:75% Dose of NPK
•S1:Control(NO humic acid)
•S3:Soil application of HA 20kg/ha
0 10
Zinc
Iron
Data provide by J.S.VIRGINE TENSHIA and P.SINGARAM
AVAILABLITY AND UPTAKE IN TOMATO
Soil application of HA@
20kg ha along with
75% recommended
dose of fertilizers
improved the
availability and uptake
of nutrients than 100%
recommended does of
fertilizers alone.

11. Analysis Data
Your company name 10
0
10
20
30
40
50
60
N P K
A3B0 A2B1
•Spray Application
•A2: 100% Dose of NPK
•A3:150% Dose of NPK
•B0:Control(NO humic acid)
•B1:Humic acid Spray@0.2%
Data provide by INTENATIONAL REASEARCH JOURNAL OF CHEMISTRY BY
BHENDI
Spary application of
HA@ 0.2% ha along
with 100%
recommended dose
of fertilizers improved
the yield and uptake
of nutrients than
150% recommended
does of fertilizers
alone.

12. Thanks For Attention
Presented by
TBIO CROP SCIENCE
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