In this slide deck, John Kempf gives an in-depth explanation of phosphorus and nitrogen interactions in the soil and how to prevent nutrient leaching. See the full video presentation here: https://www.youtube.com/watch?v=vyHEof7LVk0

1. PREVENTING NITROGEN AND PHOSPHORUS LEACHING
A Webinar Hosted by AEA Featuring John Kempf

2. Plant nutrients
should be
“available but
not soluble.”

3. Quickly convert applied nitrate or
ammonium to amino acids
(bacterial mineralization):
Stabilizing Nitrogen
➜Soluble Carbon
➜Sulfur
➜Molybdenum

4. Carbon and Nitrogen stabilize in
soil organic matter at
30:1
Carbon to Nitrogen Ratio

5. Nitrogen and sulfur are present in
amino acids and proteins at
10:1
Nitrogen to Sulfur Ratio

6. When we combine the carbon -
nitrogen - sulfur ration:
300:10:1
➜300 Carbon, ➜10 Nitrogen, ➜1 Sulfur
Combined Ratios

7. Nitrogen remains soluble dependent
on the lowest common denominator,
either carbon or sulfur
300:10:1
300 Carbon, 10 Nitrogen, 1 Sulfur
Stabilizing Nitrogen

8. Add:
➜ (A) Ammonium thiosulfate 12-0-0-26s
to achieve 10:1 N-S ratio
(example: 10% of 28-0-0)
Purpose: provide sulfur to quickly convert
to microbial amino acids
Nitrogen Applications

9. Add:
➜ (B) HumaCarb @ 10% of N percentage
(example: 3% in 32-0-0)
Purpose: Complex and stabilize with
concentrated and stable carbon which
has a large holding capacity
Nitrogen Applications

10. Add:
➜ (C) Rebound Molybdenum 1 pt per
acre
Purpose: enzyme cofactor for nitrate
reductase enzyme needed by bacteria
to convert nitrate to amino acids
Nitrogen Applications

11. Nitrogen Applications
Add:
➜ (D) Rejuvenate @ 5% of nitrogen
solution volume
Purpose: Provide soluble carbon and
strong biostimulant for aggressive bacterial
development and nitrate conversion

12. Add:
➜(A) Ammonium thiosulfate 12-0-0-26s to
achieve 10:1 N-S ratio
➜(B) HumaCarb @ 10% of N percentage
➜(C) Rebound Molybdenum 1 pt per acre
➜(D) Rejuvenate @ 5% of nitrogen solution
volume
Nitrogen Applications

13. Phosphorus leaves
soil in two ways:
(A) As soluble P
shortly after
application
(B) With soil
particles

14. Precipitate and Mineral
(up to 9000 lb per acre
Microbially Complexed
(up to 50 lb per acre)
Adsorbed to soil particles
(up to 500 lb per acre)
Ortho
1 lb
Solubilized by microbes
Complexed by pH dependent
chemical reactions
Solubilized by microbes
Adsorbed to clay particles
‘anion exchange capacity’
Immobilization (complexed)
Mineralization (solubilized)

15. Ortho
1 lb
Plants absorb phosphorus in the orthophosphate form
Only very small amounts available in this form at any given
moment in natural soil environments

16. Precipitate and Mineral
(up to 9000 lb per acre
Microbially Complexed
(up to 50 lb per acre)
Adsorbed to soil particles
(up to 500 lb per acre)
Ortho
1 lb
Applied Fertilizer
A ‘common’ ecosystem
Generally 90+% of applied P becomes tied up in 20-40 days
Crops generally only absorb 5-15% of what is applied
Strongly suppresses phosphorus solubilizing microbes

17. Microbially Complexed
(up to 50 lb per acre)
Ortho
1 lb
Immobilization (complexed)
Mineralization (solubilized)
Mychorrizal fungi and symbiotic phosphorus solubilizing
bacteria mineralize adsorbed and precipitated/mineral
phosphorus
Occurs most rapidly at optimal soil temperatures of 65-105 F
Applications of soluble phosphate fertilizers suppress P
solubilizing microbes
Applied Fertilizer

18. Adsorbed to soil particles
(up to 500 lb per acre)
Ortho
1 lb
Solubilized by microbes
Adsorbed to clay particles
‘anion exchange capacity’
Applied soluble phosphates
can be adsorbed to soil very
rapidly
High anion exchange
capacity (AEC), is generally
associated with very small
soil particles
Roots have limited access to
adsorbed P, mostly released
by microbial mineralization
Applied Fertilizer

19. Precipitate and Mineral
(up to 9000 lb per acre
Ortho
1 lb
Solubilized by microbes
Complexed by pH dependent
chemical reactions
Applied phosphates can quickly precipitate out of solution.
In acidic soils phosphorus reacts with iron, aluminum and
manganese,
In alkaline soils phosphorus reacts with calcium,
Optimal soil pH for phosphorus availability is 6-7
Roots can not absorb precipitated phosphorus, must be
released by microbial mineralization
Applied Fertilizer

20. Precipitate and Mineral
(up to 9000 lb per acre
Microbially Complexed
(up to 50 lb per acre)
Adsorbed to soil particles
(up to 500 lb per acre)
Ortho
1 lb
Applied Fertilizer
A ‘common’ ecosystem
Generally 90+% of applied P becomes tied up in 20-40 days
Crops generally only absorb 5-15% of what is applied
Strongly suppresses phosphorus solubilizing microbes

21. Precipitate and Mineral
(up to 9000 lb per acre
Microbially Complexed
(up to 50 lb per acre)
Adsorbed to soil particles
(up to 500 lb per acre)
Ortho
1 lb
An optimal ecosystem

22. Precipitate and Mineral
(up to 9000 lb per acre
Microbially Complexed
(up to 50 lb per acre)
Adsorbed to soil particles
(up to 500 lb per acre)
Ortho
1 lb
Applied
Fertilizer
How can you regenerate an optimum ecosystem?
(A) Reduce quantity of applied fertilizer per application
(B) Buffer and stabilize applied fertilizer so it “available, but not
soluble” (increase crop utilization from 15% up to 60+%)
(C) Add phosphorus solubilizing microbes and biostimulants
P solubilizers

23. Humic and fulvic
substances
complex
phosphorus and
stabilize it.
“Available but not soluble”

24. Phosphorus
solubilizing
bacteria have a
symbiotic
relationship with
mychorriza
BioCoat Gold
BioCoat Gold is a blend of natural seaweed, concentrated humic substances and other
nutrients, designed to speed germination and provide nutrients to support strong initial growth.
a dry blended biological seed treatment and inoculant
features and benefits
BioCoat Gold acts as a catalyst for seed
germination and will not only speed the rate
of germination, but also improves the
consistency with which your seeds will
germinate. Seeds that germinate together will
pass through growth stages together and will
be ready to harvest together.
BioCoat Gold contains beneficial microbes
and serves as a soil microbial inoculant to to
boost microbial population.
BioCoat Gold also contains nutrients and
growth promoters to sustain plants through
their initial growth stage.
dry amendment makeup
BioCoat Gold contains seaweed, calcium, humic
substances and microbial inoculants. Seaweed
contains trace minerals, plant hormones and other
compounds that act as plant growth promoters which
have a direct effect on germination rate and seedling
vigor.
Calcium serves as a catalyst to germination by
neutralizing the germination inhibitors naturally
contained in the seed coat. When calcium is applied
along with seaweed and humic substances, the
combination strengthens the microbial community and
promotes strong initial plant growth.
Humid substances provide a substrate for the
microbial community that stimulates population growth
and helps them digest the seaweed’s inherent plant
growth promoters to make available additional trace
nutrients to your newly emerged seedlings.where and how to use
BioCoat Gold performs well on a variety of seed
types, especially corn, legumes,and small grains.
It is best to coat the seed before putting it in your
planter. If necessary, BioCoat Gold can be added
to the top of the planter and the dry material will
eventually filter down to contact and coat the
seed.
Using this method, initial seeds through the
planter may not see as much benefit as the last
seeds planted.
This product is suitable for use under NOP.
Check with your certifier before using.
application rates and timing
BioCoat Gold should be applied to your seed to coat
the entire seed at a rate of 2-4 ounces per 100
pounds of seed. Smaller seed will require more
material for optimum coatings there is more surface
per 100 pounds of seed.
If you are currently not taking advantage of our
consulting service, please call 800-495-6603 to
get connected with an AEA consultant.
Advancing Eco Agriculture
4551 Parks West Road, Middlefield OH 44062
www.advancingecoag.com • 800-495-6603
Mychorrizal Fungi + P solubilizing bacteria

25. CALL AEA
800-495-6603