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Master Gardeners take a field trip to
The Veggie Patch
Rod Pittman, founding member of the Dunwoody
Community Garden, invites gardeners to visit
The Veggie Patch
How he has put organic and permaculture
practices to work on a commercial scale.
What can we learn from his practices?
Growing any crop indoors or out,
365 days a year!
● Chard ● ! ● Spinach
● Carrots● Tomatoes● Turmeric
How does he do this?
It's a combination of:
1) Micro-organisms in the soil
2) Maintaining soil temperature for great
germination and container growing
3) Supplying nutrients needed
About micro-organisms
● Good soil teems with a multitude of organisms,
without them it's just “dirt” (clay, silt and sand)
● Mulch and compost put the life in the dirt!
● Organic matter is the secret; it houses the
micro-organisms
● Interactions of micro-organisms and their
feeding relationships (literally “who eats whom”)
help determine:
– the types of nutrients available in the soil,
– to what depth the nutrients are present,
– the soil pH,
– the types of plants which can be grown.
It all begins with.....
Beneficial bacteria and fungi in the organic
matter/soil, which
● Degrade residual toxic chemicals
● Bacteria release a glue-like substance to hold
soil together, Fungi release organic acids
● Tie up soluable nutrients so they are not
leachable and not lost as water moves through
the soil...
● Serve as food for protozoa, beneficial
nematodes and micro-arthropods which then
release the tied-up nutrients in a plant-available
form
Soil Food Web
● Plants naturally put out EXUDATES (sugars,
carbohydrates and proteins) to attract and feed bacteria
and fungi, especially in the root zone.
● The attracted bacteria and fungi soak up all the soluble
nutrients in the soil and hold them, surrounding the
plant roots, just where they are needed.
Exudates
Root Zone
Exudates
Root Zone Attract Bacteria and Fungi
Exudates
Root Zone Attract Bacteria and Fungi
Which consume nutrients
unavailable to roots
Exudates
Root Zone
Fungi and bacteria
Attract protozoa,
nematodes and
micro-arthropods
Protozoa, nematodes and micro-arthropods attract worms and insects.
Root Zone
All this feeding activity
creates cavities in
the soil, places where
water and air can be
stored
PLUS, the previously unavailalbe nutrients are converted into plant-usable nutrients
by the consumers, which squish juices from the consumed bacteria and fungi!
Root Zone
Creating more root growth, more exudates, attracting more and more bacteria and
fungi, repeating the same cycle over and over
Mighty microbes!
● Hold on to nutrients, reduce/prevent leaching,
so we need to add fewer and fewer nutrients.
(About 80% of inorganic fertilizers leach out.)
● Restructure the soil by creating passageways
and cavities which retain water and air so we
need less irrigation.
● As plant health and nutrients improve, the
whole system acquires better immunities,
resistance to pests and diseases.
Bacteria to Fungi ratios
● All organic matter has some level of bacteria,
the fungi level is much more subject to
fluctuation.
● What will grow is dependent upon the bacteria
to fungi ratio.
● For example, a 300:300 bacterial/fungi ratio will
foster veggie and row crop growth, but a
500:500 content will produce much more rapid
growth, more flowering and more fruiting.
Fungi to Bacteria ratio
Old Growth Forests
Deciduous Trees
Shrubs, Vines
Crops, High Grasses
Veggies, Mid Grasses
Early Grasses
Weeds
0 20 40 60 80 100 120
0.3
0.7
2.1-8.1
8.1-100
100-1000
0.1
1.0-2.1
What Can I Grow?
Determine the natural growth and apply compost
accordingly.
SO....if only weeds are growing, I really need to
boost the fungi population in order to grow
veggies.
If grass is lush, balance may be OK already.
FYI: pH in highly fungal soil is acidic, less than 7
PH in bacterial soil is alkali, greater than 7
How to increase bacteria & fungi
They cannot yet be
created or grown in a
lab...
They grow like crazy in
compost!
Rod's Secret Compost Recipe
● Compost! ● 4 35-gallon containers of
crushed (oak) leaves
● 4 35-gallon containers of
grass clippings or weeds
● 4 35-gallon containers of
grass hay
● 2 5-gallon containers well-
aged wood chips
● 1 hog-wire pen at least 4 feet
across
Lay down 6” hay, wet it down well
Add a handful of aged wood chips
Layer 6” of oak leaves, wet it down
Another handful of wood chips
Layer 6” of green matter
Repeat layers till it's all used up
Check temperature with a looooooooong
thermometer probe till the center hits 160 degrees
When it's 160 degrees,
Lift or unwrap the hog wire ring and reassemble it
nearby
Peel off the outer “rind” and put it in the ring, stir it
up and cover with the rest of the heap,
Try to place what was in the center along the
outer edge and what was the outer layer in the
center.
Repeat the heating cycle, turn 3-4 times will the
entire pile reaches 165 degrees.
The Prize Stuff!!
● Under a microscope, a sample in a drop of water
should have a microbial count of 3000!
● Using 1.5 lbs of compost in a perforated bag
suspended in 5 gallons of water with a fish tank
bubbler for 24 hours yields COMPOST TEA with
a microbial count of up to 300,000!
● Dispense the tea quickly by watering can with
TINY holes, moving steadily, when seeding, and
again in another 10 days.
● Tea, anyone?
Rod's compost tea
brewing system.
Notice tiny watering
can with tiny holes...a
little goes a long way!
How Rod uses the Compost and the
Compost Tea
Container crops ● Bottom 2/3 is volcanic
rock (stores lots of
water and air)
● Cheesecloth layer
● Top 1/3 is pure
compost
● Regular watering and
periodic Compost Tea
● No need to change
soil for next crop!
● For transplant pots ● Potting soil is equal
parts:
– Peat moss (soaked)
– Perlite
– Compost
Controlling Soil Temp
● Heated water ● Heated water flowing
under sand floors in
greenhouses
● Warmth!
Year-round quick germination
● Seeds on warm sand ● Germination!
● Tomatoes
Year-round cultivation of
many veggies, fruits and
herbs
Meanwhile, out in the fields...
● Root crops are simply
planted in compost on
top of clay.
● Compost tea (lightly!)
every 10 days
● Nov, 2016
● Turmeric! $$$$$$
● Perennial ground
cover between rows
actually increases
exudates, conserves
water and nutrients
● Notice “weeds”
between rows
In Conclusion...
● If life is missing from your soil, give Mother
Nature a jump-start to help re-establish the
normal sets of organisms and, thus, re-establish
normal nutrient cycling.
● If we establish and maintain nutrients and a
diversity of microbes to transform those nutrients
into plant-usable nutrients, the plants can do the
rest.
● Eventually, the plants take care of themselves!
Thanks to...
● Rod Pittman, for his knowledge and hospitality
● Janet Hanser, for her photos

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Veggie Patch Review

  • 1. Master Gardeners take a field trip to The Veggie Patch Rod Pittman, founding member of the Dunwoody Community Garden, invites gardeners to visit The Veggie Patch How he has put organic and permaculture practices to work on a commercial scale. What can we learn from his practices?
  • 2.
  • 3.
  • 4. Growing any crop indoors or out, 365 days a year! ● Chard ● ! ● Spinach ● Carrots● Tomatoes● Turmeric
  • 5. How does he do this? It's a combination of: 1) Micro-organisms in the soil 2) Maintaining soil temperature for great germination and container growing 3) Supplying nutrients needed
  • 6. About micro-organisms ● Good soil teems with a multitude of organisms, without them it's just “dirt” (clay, silt and sand) ● Mulch and compost put the life in the dirt! ● Organic matter is the secret; it houses the micro-organisms
  • 7. ● Interactions of micro-organisms and their feeding relationships (literally “who eats whom”) help determine: – the types of nutrients available in the soil, – to what depth the nutrients are present, – the soil pH, – the types of plants which can be grown.
  • 8. It all begins with..... Beneficial bacteria and fungi in the organic matter/soil, which ● Degrade residual toxic chemicals ● Bacteria release a glue-like substance to hold soil together, Fungi release organic acids ● Tie up soluable nutrients so they are not leachable and not lost as water moves through the soil... ● Serve as food for protozoa, beneficial nematodes and micro-arthropods which then release the tied-up nutrients in a plant-available form
  • 9.
  • 10. Soil Food Web ● Plants naturally put out EXUDATES (sugars, carbohydrates and proteins) to attract and feed bacteria and fungi, especially in the root zone. ● The attracted bacteria and fungi soak up all the soluble nutrients in the soil and hold them, surrounding the plant roots, just where they are needed.
  • 12. Exudates Root Zone Attract Bacteria and Fungi
  • 13. Exudates Root Zone Attract Bacteria and Fungi Which consume nutrients unavailable to roots
  • 14. Exudates Root Zone Fungi and bacteria Attract protozoa, nematodes and micro-arthropods Protozoa, nematodes and micro-arthropods attract worms and insects.
  • 15. Root Zone All this feeding activity creates cavities in the soil, places where water and air can be stored PLUS, the previously unavailalbe nutrients are converted into plant-usable nutrients by the consumers, which squish juices from the consumed bacteria and fungi!
  • 16. Root Zone Creating more root growth, more exudates, attracting more and more bacteria and fungi, repeating the same cycle over and over
  • 17. Mighty microbes! ● Hold on to nutrients, reduce/prevent leaching, so we need to add fewer and fewer nutrients. (About 80% of inorganic fertilizers leach out.) ● Restructure the soil by creating passageways and cavities which retain water and air so we need less irrigation. ● As plant health and nutrients improve, the whole system acquires better immunities, resistance to pests and diseases.
  • 18. Bacteria to Fungi ratios ● All organic matter has some level of bacteria, the fungi level is much more subject to fluctuation. ● What will grow is dependent upon the bacteria to fungi ratio. ● For example, a 300:300 bacterial/fungi ratio will foster veggie and row crop growth, but a 500:500 content will produce much more rapid growth, more flowering and more fruiting.
  • 19. Fungi to Bacteria ratio Old Growth Forests Deciduous Trees Shrubs, Vines Crops, High Grasses Veggies, Mid Grasses Early Grasses Weeds 0 20 40 60 80 100 120 0.3 0.7 2.1-8.1 8.1-100 100-1000 0.1 1.0-2.1
  • 20. What Can I Grow? Determine the natural growth and apply compost accordingly. SO....if only weeds are growing, I really need to boost the fungi population in order to grow veggies. If grass is lush, balance may be OK already. FYI: pH in highly fungal soil is acidic, less than 7 PH in bacterial soil is alkali, greater than 7
  • 21. How to increase bacteria & fungi They cannot yet be created or grown in a lab... They grow like crazy in compost!
  • 22. Rod's Secret Compost Recipe ● Compost! ● 4 35-gallon containers of crushed (oak) leaves ● 4 35-gallon containers of grass clippings or weeds ● 4 35-gallon containers of grass hay ● 2 5-gallon containers well- aged wood chips ● 1 hog-wire pen at least 4 feet across
  • 23. Lay down 6” hay, wet it down well Add a handful of aged wood chips Layer 6” of oak leaves, wet it down Another handful of wood chips Layer 6” of green matter Repeat layers till it's all used up Check temperature with a looooooooong thermometer probe till the center hits 160 degrees
  • 24. When it's 160 degrees, Lift or unwrap the hog wire ring and reassemble it nearby Peel off the outer “rind” and put it in the ring, stir it up and cover with the rest of the heap, Try to place what was in the center along the outer edge and what was the outer layer in the center. Repeat the heating cycle, turn 3-4 times will the entire pile reaches 165 degrees.
  • 25. The Prize Stuff!! ● Under a microscope, a sample in a drop of water should have a microbial count of 3000! ● Using 1.5 lbs of compost in a perforated bag suspended in 5 gallons of water with a fish tank bubbler for 24 hours yields COMPOST TEA with a microbial count of up to 300,000! ● Dispense the tea quickly by watering can with TINY holes, moving steadily, when seeding, and again in another 10 days.
  • 26. ● Tea, anyone? Rod's compost tea brewing system. Notice tiny watering can with tiny holes...a little goes a long way!
  • 27. How Rod uses the Compost and the Compost Tea Container crops ● Bottom 2/3 is volcanic rock (stores lots of water and air) ● Cheesecloth layer ● Top 1/3 is pure compost ● Regular watering and periodic Compost Tea ● No need to change soil for next crop!
  • 28. ● For transplant pots ● Potting soil is equal parts: – Peat moss (soaked) – Perlite – Compost
  • 29. Controlling Soil Temp ● Heated water ● Heated water flowing under sand floors in greenhouses ● Warmth!
  • 30. Year-round quick germination ● Seeds on warm sand ● Germination!
  • 31. ● Tomatoes Year-round cultivation of many veggies, fruits and herbs
  • 32. Meanwhile, out in the fields... ● Root crops are simply planted in compost on top of clay. ● Compost tea (lightly!) every 10 days ● Nov, 2016
  • 33. ● Turmeric! $$$$$$ ● Perennial ground cover between rows actually increases exudates, conserves water and nutrients ● Notice “weeds” between rows
  • 34. In Conclusion... ● If life is missing from your soil, give Mother Nature a jump-start to help re-establish the normal sets of organisms and, thus, re-establish normal nutrient cycling. ● If we establish and maintain nutrients and a diversity of microbes to transform those nutrients into plant-usable nutrients, the plants can do the rest. ● Eventually, the plants take care of themselves!
  • 35. Thanks to... ● Rod Pittman, for his knowledge and hospitality ● Janet Hanser, for her photos

Editor's Notes

  1. Everyone knows Rod and has heard his generous invitations to come visit his place near Commerce, the Veggie Patch. Last November, a group of Master Gardeners took him up on the invitation and headed out so see Rod and his operation. I won't go into details, but suffice it to say it's a several hundred acre place with about 8 acres currently devoted to growing organic veggies, frutis and herbs along with flowers. Some are out in fields, some in greenhouses, some in containers indoors and some outdoors.
  2. Here's Rod! In front of some of his growing houses.
  3. Some of his produce, and this is just a tiny sampling.
  4. Rod's success lies in these three things. Were going to spend the most time on the first of these and learning about the Soil Food Web, the underlying truth about nurturing the micro-organisms in our soil which will not only sustain our plants but eventually allow the plants to do just about all of the work raising themselves and even increasing their health and yields.
  5. If you attended my soil presentation last year, you'll remember that soil contains minerals (clay, sand and/or silt), air, water and ORGANIC MATTER. Organic matter, dead and decaying plant, insect and animal material, insect and animal waste, hosts lots of microorganisms doing the decaying process. Microorganisms are the only “living” part of the soil, capable of reproduction.
  6. So here we have a little plant, newly sprouted or maybe even a small transplant.
  7. I learned a new word....EXUDATES, which are sugars, carbohydrates and protiens sweated out, if you will, by all plants. Most of the exudates are exuded by the roots, but some also by stems and leaves.
  8. So here is my rendition of the plant's roots exuding exudates in the root zone...
  9. Which attracts whatever bacteria and fungi are in the immediate vicinity... Those bacteria and fungi soak up all the nutrients in the soil surrounding the root zone that the plant was incapable of absorbing and store those nutrients, keeping them in the root zone rather than having them leach out during rain or irrigation. They also reproduce. NOTE: Typically 80% of inorganic fertilizers leach out, into our water sources because there aren't enough bacteria and fungi to consume all of them. Dr. Elaine Ingham.
  10. The fungi and bacteria are fatter now, having soaked up a lot of nutrients that were not in plant-usable form
  11. All these bacteria and fungi attract higher-order micro-organisms such as beneficial nematodes, protozoa and micro-arthropods.
  12. These eat the bacteria and fungi, extracting the nutrients by a type of squishing function and converting the previously non-plant soluble nutrients into plant-available nutrients in their excrement and castings.
  13. Which allows the lant to produce even more roots, exudates and the whole cycle continues in an ever-growing cycle.
  14. So... Bacteria and fungi hold on to nutrients. Plant-available nutrients are released as predator nematodes, protozoa and microarthropods consume the bacteria and fungi. Plants have much higher level of available nutrients to use, grow faster, stronger, bigger and more productive.
  15. Imagine a huge level field with the fungi count increasing as you moved from one side of the field to the other. The beginning side of the field would be bare dirt with a few weeds, progressing to short, scruffy grasses, to taller, lusher grasses and beans, peas, lettuces, carrots and other vegetables... To wheat and tall grasses and corn, milo, and other crops To small and medium bushes, blueberries and fruit vines To larger and larger deciduous trees And finally to old growth hulking forests As the fungi increase, so do the sizes, roots and lifespans of what will grow.
  16. For example, the site of the orchard was a parking area and building site. After demolition, it grew weeds. The site was nutrient deficient and contained little or no organic matter. We have worked for over 5 years to increase the organic matter, and therefore the bacteria and fungi population in that soil by composting, mulching, companion planting, permaculture practices. As we have added more and more organic matter, the funi population has grown. Most recently using hugelkulture practice of placing rotting wood around tree roots, covering with compost, then mulch.
  17. I was surprised to see how manageable Rod's compost production is, but it's so potent that a little goes a long way... I think he had about 4-5 stacks in various stages of readiness when we were there.
  18. If you'll think back, there were three items Rod needed: Microorganisms Soil Temperature control And nutrients
  19. Rod has created giant, walk-on heating pads within greenhouses. By pumping heated water (heat provided by wood-burning furnaces) in pipes covered with about 4 inches of sand, the entire floor is a growing mat. Rod sets out his seeded trays right on the floor and has gernimation within a few days.
  20. Some of the seedlings are transplanted into larger containers and grown indoors or out, depending upon the hardiness of the plants
  21. Some possible perennial ground covers to cover the bare soil between crop plants include: Sedum Euphorbia Salvia Heuchera Creeping Janny The exudates of these between row plants preserve the rich bacteria and fungi population, storing more nutrients and creating and preserving more water and air storage cavities.
  22. I would like to thank Janet Hanser for many of the photos, Rod Pittman for his knowledge and hospitality