Cutivating ecological vegetable gardens
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Transcript of Cutivating ecological vegetable gardens
Ecology—the relationship of
organisms to one another and their
physical surroundings.
Regenerative Gardening
Soil Food Web
Companion planting
Garden design
Help plants maximize photosynthesis
and tend the soil biology.
Minimize plowing or tilling and
digging
Grow a diverse number of crops
Don’t leave soil bare for extended
periods
Don’t use pesticides or synthetic
fertilizer.
“Using soil
biology we
can mitigate
climate
extremes in 5
years”
http://www.nofamass.org/sites/default/fil
es/2015_White_Paper_web.pdf
• Keep soil covered to reduces carbon
loss, best with living plants
• Plant roots support formation of humus
• Conservation tilling
• No artificial fertilizers/ slow acting
organic nutrients are best
• Feed the soil
The upper mineral & organic
matter in the upper layer of the
earth’s crust. • Weathered Rock: Sand, silt, clay 45%
• Organic matter 5%
• Air & Water = 50%
http://articles.extension.org/pages/54401/basic-soil-components
Healthy Soils
• help control pests & disease in plants
• Is a base for symbiotic associations
between plant roots and organisms
• Recycle plant nutrients
• Improve soil structure through
formation of humus
http://www.soilandhealth.org/01aglibrary/010116balfourspeech.html
Very long carbon molecules with a large surface area. The surface area carries charges which attract & hold minerals.
Minerals + organic matter + humus + water + air = soil
Teaming With Microbes
Soil is made of minerals, organic matter,
organisms • Sand, Silt, Clay, Rock, Pebbles, Stone contains all
the nutrients that plants need.
• Organisms in the soil food web unlock the
nutrients & make them available to the plant,
every second, every day.
https://mosesorganic.org/soils-natural-process/
“Pests, diseases and lack of
fertility don’t exist anymore if
you get the biology correct in
your soil.”
https://www.youtube.com/watch?v=qXBIxFAxtlQ&list=PLCeA6DzL9P4tXigiuZPLd89Qj71pj0a0F
Microorganisms contribute 600 lbs/acre of fertilizer when
they die. are part of the digestive process of soil “What a marvelously integrated system
God through Nature has wrought in this subterranean world of microscopic, specky beings.”
http://soilandhealth.org/files/BMaDhLKrJT/010133rodale.pdf
Soil Food Web
http://www.nrcs.usda.gov/wps/portal/nrcs/detailfull/soils/health/biology/?cid=nrcs142p2_053868
These interactions occur in the
Rhizosphere (gut of the plant)
Biological interactions are sensitive to • Soil compaction
• Tillage
• Fungicides, Herbicides, Pesticides, Fertilizers
http://www.nature.com/scitable/knowledge/library/the-rhizosphere-roots-soil-
and-67500617
Plants secrete sugars &
proteins that attract beneficial
bacteria & fungi.
Bacteria & fungi are eaten by
nematodes & protozoa
Their wastes increase the
organic matter of the soil.
http://articles.mercola.com/sites/articles/archive/2013/12/15/brunetti-biological-farming.aspx
Protozoa are good nutrient recyclers
Can eat 10,000 bacteria/day
Soak fresh grass clippings alfalfa, hay or
straw in dechlorinated water 3-4 days
Bubble air through the liquid
Pour on top of mulch
http://cfb.unh.edu/phycokey/Choices/Amoebae_Flagellates_Ciliates/Ciliates/PARAMECIUM/Paramecium_Image_page.html
Fungi cover the roots of trees like gloves,
extending the root system
Symbiotic relationship • The plant secretes carbohydrate exudates which
supports the fungi
• The fungi break down and supply water and
nutrients esp. Phosphorus
• If P is too high, mycorrhizae do not develop
http://planetearth.nerc.ac.uk/news/story.aspx?id=470&cookieConsent=A
Fix nitrogen Peas, clovers, alfalfa,
vetches, and fava beans can all make significant contributions of nitrate nitrogen.
Manufacture from 80 to 200 pounds of nitrates per acre
“Green manure”
http://www.soilandhealth.org/03sov/0302hsted/030202/03020209.html
• Rhizobia can manufacture from 80 to 200 lbs
nitrates/acre.
• Peas, clovers, alfalfa, vetches, and fava beans can
all make significant contributions of nitrate
nitrogen.
• “Green manuring legumes”--till into soil
• Summer crops of cowpeas and snap beans, tend
to be net consumers of nitrates, not makers of
more nitrates than they can use—Tuck them in or
add to compost.
http://www.soilandhealth.org/03sov/0302hsted/030202/03020209.html
http://www.nrcs.usda.gov/wps/portal/nrcs/detailfull/soils/health/biology/?ci
d=nrcs142p2_053868
Collohmannia sp.
More than two thousand years ago Arisotle
said…
“Earthworms are the
intestines of the earth”
http://www.rodalesorganiclife.com/garden/this-time-lapse-video-of-worms-making-compost-is-
awesome?cid=soc_Rodale%27s+Organic+Life+-
+RodalesOrganicLife_FBPAGE_Rodale%27s+Organic+Life__
nitrogen by 5X times
soluble calcium by 2X
available magnesium by 2½X
phosphorus by 7X
potassium 11X
Also make trace minerals available
http://www.wilderness-survival.net/composting/earthworm-soil-fertility
• Darwin:
calculated that worms deposit 10
tons/acre of castings each year.
• Sir Albert Howard:
calculated 25 tons/acre
http://soilanalyst.org/humus-and-worm-castings/
Composting is a managed biological
process that converts organic material
into a fine particle humus.
Microorganisms decompose organic
material.
Oxygen must be present and heat is
generated as the organic material
decomposes.
The C:N (carbon:nitrogen) balance 30:1
Tree leaves: 40:1, grass clippings: 20:1
4x4 feet
Break up material into small parts
Freestanding or in a bin
Layer materials add water you build
Lime
Water and keep moist
Turn pile regularly
•Build compost heap add materials
as they are available
•Wait 4 days – no turning, then turn
every 2nd day for 14 days
•Highest temperature: 120 degrees
•Does not kill weed seeds or
pathogens
•Beneficial fungi may persist
Kills weed seeds & pathogens
Compost temperature is maintained between
130--150 degrees Celsius
Turn compost as temperature decreases
Cure for 2 weeks
Ready in 4-8 weeks
Lay on top of garden soil
http://deepgreenpermaculture.com/diy-instructions/hot-compost-composting-in-18-days/
Play an important role in degrading complex organics such as cellulose, lignin, chitin, and proteins.
Work during the curing phase of composting
http://www.the-compost-gardener.com/actinomycetes.html
Vermicomposting
Hügelkultur (raised garden beds or
mounds)
Black soldier fly larvae composting
Compost tea
http://bionutrient.org/audio/2013_soil_nutrition_conference/2-Crop-HEALTH-Transitions-John-Kempf.pdf
• Soil test 2-3 yrs
• Build organic matter
Cover crops
Green manures & living mulches
Compost
• Crop rotations
• Conservation tillage
• Mulching
pH—Limestone, Sulfur
Macronutrients
• Aged cow or horse manure
(herbicide-free)
• Bloodmeal, Rock phosphate,
Greensand, Magnesium, gypsum
Micronutrients:
• Boron, zinc, copper, cobalt, boron,
molybdenum
• Add organic matter
Compost, Green manures, living
mulches & cover crops.
Till gently in spring or during
growing season. Wait 3 weeks.
Territorial Seed http://www.territorialseed.com/product/15484/spring_growing_guides
After adding a layer of compost to the soil
add
Green mulches--clover
Salt hay
Chopped leaves
Grass clippings
Wood chips in walkways
Interplantings, deep roots & shallow roots
Potatoes—vetch
Sweet corn—soybean
Cabbage—sweet clover
Peas—follow by mix of clovers
Beans—winter vetch
Root crops—dwarf white clover
Squash—sweet clover between rows
Beets, carrots other roots—follow sweet
clover
The New Organic Grower --Elliot Coleman p. 78-79
Cover crops with vegetables.
Cucurbits with oats or wheat
Mammoth Red clover on sides
of hills
Corn or rice underplanted
with white clover.
Resource: Masanobu Fukuoka
“One Straw Revolution”
Attract beneficial insects:
fennel, butterfly weed, calendula,
cosmos, buckwheat, sunflowers.
Alternate with plants in rows, plant in
perimeter of garden.
Studies: Mexican tarragon and carrots
https://www.youtube.com/watch?v=XqRLVUtAAV8 AllisonLHJack