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Organic Gardening. Organic Gardening. Rodale’s The organic gardener’s bible http://www.rodaleinstitute.org/. National Organic Program. Developed national organic standards and established an organic certification program http://www.ams.usda.gov/AMSv1.0/nop. National Organic Program. - PowerPoint PPT Presentation
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Organic Gardening
Organic Gardening Rodale’s
The organic gardener’s bible http://www.rodaleinstitute.org/
National Organic Program• Developed national organic standards
and established an organic certification program • http://www.ams.usda.gov/AMSv1.0/nop
National Organic ProgramOrganic crops are raised without •most conventional pesticides•petroleum-based fertilizers•sewage sludge-based fertilizers
National Organic Program• Prohibits GMOs• As a general rule,
natural substances are allowed • Synthetic substances
prohibited
Does Natural Mean Organic?• Natural and organic
are not interchangeable• Free-range,
hormone-free, and natural don't mean “organic”
Certification• Accredited by USDA-accredited
certifying agents• The information an applicant must
submit • organic system plan• substances used• record keeping
Organic Materials Review Institute (OMRI) • National nonprofit
organization that determines which products are allowed for use in organic production
• OMRI products• http://www.omri.org/
Crop Scheduling Burpee
http://www.burpee.com/gygg/growingCalendarWithZipCode.jsp?catid=1000&_requestid=647487
Southeastern States http://www.thegrower.com/south-east-
vegetable-guide/pdf/ Clemson
http://www.clemson.edu/extension/hgic/plants/vegetables/gardening/hgic1256.html
Log Gardening Hugelkultur Bury logs in a mound Retain moisture Decomposition provides
Nutrients Aeration Boosts microorganisms
Heirloom Plants Open-pollinated Grown in an “earlier era” Before 1951, before hybridization
became popular Better flavor
Cover Crop http://www.clemson.edu/sustainableag/
IP024_covercrop.pdf
Cover CropCatch CropReduce nutrient leaching
Cover CropImprove soilIncreases organic matter in soilImproves soil structureIncreases microbial activity
Cover CropNature’s fertilizersNitrogen production from legumes
Clover, beans, peas, vetch
Cover CropRooting can aerate soilBlue lupine a biological plow in compacted soils
Cover CropWeed suppressionSmother weedsAllelopathic effects
Inhibit or slow growth of weeds by releasing natural toxins, or allelochemicals
Small grains (rye), sorghum, sudangrass
Companion PlantingCertain combinations have synergistic effectsImprove growthPrevent pestsAttract beneficials
Companion Planting Rose and garlic Tomatoes and cabbage Corn and beans
Crop Rotation Don’t grow the same crop in the same
soil year after year
Crop Rotation The longer the rotation, the better the
results 4-year rotation: Corn, soybeans, oats,
alfalfa Break up insect and disease life cycles Reduce weeds Improve soil nutrition
Crop Rotation Iowa State University Marsden Farm rotation experiment started
in 2003 The longer rotations produced better yields Reduced fertilizer/herbicides up to 88% http://opinionator.blogs.nytimes.com/
2012/10/19/a-simple-fix-for-food/?_php=true&_type=blogs&_php=true&_type=blogs&_r=1
Organic v. Conventional Standford study suggests no health
benefit However, do recognize reduced
exposure to synthetic pesticides, growth hormones and GMO
http://med.stanford.edu/ism/2012/september/organic.html
http://gothamgreens.com/our-farm/
http://brightfarms.com/s/#!/retail_partners
Vegetable Gardening Minimum of six hours of sunlight
Best with eight to ten hours Leafy crops, like lettuce, are more
tolerant of shade
Three Sister’s Garden Sweet corn planted first Green beans planted a week later
Climb the corn stalks Beans are legumes
Fix nitrogen
Three Sister’s Garden Squash planted a week later between
the corn and beans to shade out weeds
Square Foot Gardening Grid pattern to conserve space
Often raised beds http://timssquarefootgarden.com
Organic GardeningCompostYard and food wastes make up approximately 30% of the waste stream in the United States
Compost Transforming organic matter into soil-
like material Invertebrates (insects and earthworms)
and microorganisms (bacteria and fungi)
CompostImproves AerationWater retentionIncrease microbes
Compost Fast or active composting done in 2 to 6
weeks
Carbon-to-Nitrogen(C:N) Bacteria and fungi
digest carbon as an energy source and ingest nitrogen for protein synthesis Carbon, the "food" Nitrogen, the
digestive enzymes
Carbon-to-Nitrogen(C:N) Brown
Carbon Green
Nitrogen
Carbon-to-Nitrogen(C:N) 30:1 (carbon to nitrogen) (Clemson)
30 pounds of carbon for every 1 pound of nitrogen
Another source reports 4 parts brown to 1 part green
Carbon-to-Nitrogen(C:N) Too much carbon, turns cold Too much nitrogen, stinks (ammonia
gas)
Carbon-to-Nitrogen(C:N) Carbon are “browns”
Leaves Dried grass clippings Straw Sawdust (moderation)
Nitrogen are “greens” Fresh grass clippings Fresh manure Kitchen scraps (fruit, vegetables, coffee grounds,
tea bags)
Materials to NOT Compost Meat
Attract scavengers Ashes from grill Dog and cat feces
Disease risk And it stinks
Surface Area Decomposition takes place when
particle surfaces are in contact with air Chopping, shredding, mowing, or breaking
up the material Increased surface area increases
decomposition And heat
Aeration Decomposition consumes oxygen
Aerobic decomposition Anaerobic decomposition occurs with
low oxygen Stinks
Turn pile frequently Pitchfork
Moisture Moisture content
of 40-60 percent Below 40%,
microbial activity slows
Above 60%, anaerobic decomposition
Temperature Microorganisms generate heat as they
decompose organic material 90F to 140F is ideal Activity slows down if too low or too
high
Vermicomposting Worm composting
Redworms 50F to 70F
Vermicomposting Worms transform food wastes into
nutrient-rich "castings“ http://www.unclejimswormfarm.com
Vermicomposting Box or bin along
with "bedding" of shredded cardboard and/or paper moistened to about 75% water content
Vermicomposting Consume four to six
pounds of food scraps per week
About four to six months, the worms will have converted all of the bedding into "castings"
Compost Tea Soaking bag of compost
in a bucket of water for an hour
Water soluble nutrients and beneficial microorganisms leach out
Boost microorganisms in soil
http://europeangarden.com/aerobin400.aspx
http://grist.org/locavore/for-new-yorkers-a-farmers-market-on-your-phone/
http://afristarfoundation.org/
educational-resources/
http://www.latimes.com/news/science/la-sci-gmo-food-safety-studies-20121025,0,2357100.story