endowing future generations · our soils as a foundation of health and wealth ... albrecht’s work...
TRANSCRIPT
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R E N E W I N G O U R F O C U S O N S O I L F E RT I L I T Y
I N T H E 2 1 S T C E N T U RY
D E R E K C H R I S T I A N S O N – B R I X B O U N T Y FA R MW W W. B R I X B O U N T Y. C O M D E R E K C H R I S T I A N S O N @ G M A I L . C O M
FA R M E R T O FA R M E R : F E RT I L E G R O U N D -C O N N E C T I N G FA R M E R S T O FA R M E R S T O P R O M O T E
H E A LT H Y S O I L , F O O D A N D C O M M U N I T Y H E A LT H
N E W E N T R Y S U S T A I N A B L E F A R M I N G P R O J E C T
D E C 9 , 2 0 1 0
Endowing Future Generations
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Tomatoes – June 27th, 2010
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Our Soils as a Foundation of Health and Wealth
Endow: to furnish with an income; especially : to make a grant of money providing for the continuing support or maintenance of <endow a hospital> (www.merriam-webster.com, dec 10)
Soils are far too important to be neglected
Aim should be to create and maintain soils which grow healthy crops and therefore can avoid expensive use of pesticides and herbicides (who profits in this scenario? Ideally the farmer if we focus on soils…)
Human health and future financial implications (diabetes, etc.)
Raw material or primary wealth production
Soils are far too important to be neglected
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Folks Who Provide Insight Into Fertility
William Albrecht – Soil Scientist at U. of Missouri, focused on percent base saturation of nutrients Neal Kinsey – follows Albrecht methods
Eliot Coleman – “The New Organic Grower” Sir Albert Howard – “An Agricultural Testament” Carey Reams – Reams Biological Theory of Ionization Arden Andersen, Dan Skow – building on Reams’s work
Rudolf Steiner – Lectures formed foundation of Biodynamic Agriculture
And… a growing network of growers, labs, and scientists
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Natural Fertility and Climatic Impact on Soils
The Big 3 Glaciers Volcanoes Siltation
Weathering of parent material and climate impact on soils
Soils in the Northeast > Acidic overtime (cation leaching) Lower pH - fungally dominant soils vs. bacterially dominant soils (higher
pH)
Kansas and the breadbasket - Albrecht’s work examining protein in wheat vs. rainfall amounts (West to East)
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Brix Bounty Farm, Dartmouth, MA
Growing Food with Respect for the Earth &
Future GenerationsFounded in 2008
Fresh Vegetables & Community Education a catalyst
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North Field – Feb. 8th, 2008
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North Field – Feb. 8th, 2008
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North Field - June 1st, 2008
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North Field – July 13th, 2008
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Summer Squash - June 21st, 2009
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Summer Squash - June 21st, 2009Summer Squash - June 21st, 2009 Summer Squash – Aug. 7th, 2009 Summer Squash – Aug. 7th, 2009
Wet Soils > Lack of Oxygen/Aeration > Crop Failure
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Soil Crust & Slime – Aug 7th, 2009
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Summer Squash – June 21st, 2009Summer Squash – June 21st, 2009 Summer Squash – June 4th, 2010Summer Squash – June 4th, 2010
The Difference a Year Makes…
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June 27th, 2010
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June 27th, 2010
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Natural Fertility and Climatic Impact on Soils
The Big 3 Glaciers Volcanoes Siltation
Weathering of parent material and climate impact on soils
Soils in the Northeast > Acidic overtime (cation leaching) Lower pH - fungally dominant soils vs. bacterially dominant soils (higher
pH)
Agricultural Management of our Soils > Future Impact
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North Field March 31st, 2010
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North Field April 30th, 2010
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Tomatoes – July 14th, 2010
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Valley Girl Tomatoes – July 14th, 2010
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Industrial Ag vs. Biological/Organic Theory
Industrial agriculture (often referred to as “conventional agriculture) – focus on limiting cost of inputs, with an emphasis on “feeding the plant” – i.e. using water soluble fertilizers, reliance upon fertilizers often from “fossil fuel” sources.
Biological/Organic agriculture focus on the health of the soil; feed the soil and let the soil feed the plant. Often focus on using “organic” materials and rock minerals.
Trophobiosis (Francis Chaboussou) – crop health with a focus on protein synthesis, limiting “free amino acids”.
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Flavor, Nutrition, and Value
“Superb Taste” as a critical component in developing healthy diets in our children.
Soil Fertility > High Quality Flavor and High Yield
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Nutrients for the soil, plant, animal, and human
CALCIUM (Ca++) Magnesium (Mg++) Potassium (K+) Nitrogen (N) – NH4
+ and NO3-
Phosphorous (P) Sulfur (S) Carbon (c) and Hydrogen (H) Sodium (Na) Trace Minerals: Boron (B), Copper (Cu), Iron (Fe),
Manganese (Mn), Zinc (Zn)…Cobalt(Co), Iodine (I) Molybdenum(Mo), Nickel (Ni), Selenium (Se), Silica (S)…
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Reviewing Soil Analysis
Soil testing can be an important tool in determining fertility needs and making sound amendment choices.
Strong Acid, Weak Acid and Saturated Paste Analysis
Field Sampling Depth – 6’’ if tilled, 4’’ if pasture/hay.
Soil pH: As pH goes down, soil becomes more acidic. More H+ ions in the soil; replacing Ca, Mg, K, etc. which are “cation” nutrients the plant needs. It’s important to look at calcium and magnesium levels before using lime to amend the soil; otherwise may end up with Mg excess.
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Where are the Nutrients in the Soil?
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Chemical, Physical, Biological
Soil health is a function and result of interrelated processes including biological, chemical, and physical characteristics.
Chemistry influences Biology and Physics Ca vs. Mg and soil flocculation
Physical influences Chemistry and Biology Oxygen necessary for soil biology
Biology influences Chemistry and Physics Mycorrhizal fungi producing Glomalin
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Types of “Organic” Fertilizers/Amendments
Rock Minerals – i.e. lime, sul-po-mag, soft rock phosphate.
Organic Fertilizers – soybean meal, alfalfa meal
Assisting Products: e.g. Humates, Sugars (Molasses)
Biologicals – Bacteria, Fungi, BD Preps, Inoculants, etc.
Compost and Organic Matter
Animal Manures – chicken, sheep, goat, cow, etc.
Fish and Seaweed
Cover Crops – green manures (legumes), bio-accumulators (oats, buckwheat)
Air and atmospheric deposition…
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Possible Shortfalls of Conventional Fertilizers
Focus on a crop instead of overall soil health. A band-aid approach. Short-term response.
Production of chemical fertilizers may be deemed unsustainable; reliance on fossil fuels.
Concentrated industrial fertilizers can have a negative impact on soil biology; e.g. KCl impact on microbes. “Oversaturation” may lead to excessive nutrient leaching (nitrates and phosphates)
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Resources: Amendment/Fertility Sources
On the Farm… Green Manures and Composts The Atmosphere and Surrounding Environment (coast)
Fedco – Organic Growers Supply (Maine) Lancaster Ag (Pennsylvania) NOFA-MASS Bulk Order Nutrient Density Supply Company (MA)
Conklin Limestone (Rhode Island) – Hi-Cal Lime Crop Production Services (South Deerfield, MA) Fieldworks (Westport, CT) Zuber’s Feed and Grain, Marvin Grain (Dartmouth)
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Resources: Websites/Organizations
Books/Publications (just a few): Acres USA The Albrecht Papers – published by ACRES USA Science in Agriculture – Arden Andersen The New Organic Grower – Eliot Coleman Biodynamics – Rudolf Steiner Hands-on Agronomy – Neil Kinsey
Websites: Brix Bounty Farm & Garden Resource Page - brixbounty.com ATTRA - http://www.attra.ncat.org/ MOFGA – Maine Organic Farmers & Gardeners Association Fact
Sheets - http://www.mofga.org/
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NOFA MASS Winter Conference – Jan 15th
A Whirlwind Introduction to Soil Fertility, From a Farmer's Perspective
I believe that renewing our focus on soil fertility will play a critical role in improving returns on our investment of labor on the farm & in the garden. Join us in a whirlwind tour through basic concepts of soil fertility; from testing techniques and cation exchange capacity to application methods and the roles of specific nutrients within our soils.
Beginning Farmer Scholarships Availablewww.nofamass.org/conferences/winter/newfarmer.php
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Nutrient Dense Crops
Food suitable for human consumption and nutrition
Moving beyond process to focus on outcomes – brix yield and human & animal health
Emphasis on outcomes focuses our work on soil and crop health
Consumer demand for taste and nutrition
New research developing (e.g. blood sugar with mineralized fruits)
Value vs. cost/price
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Real Food Campaign - www.realfoodcampaign.orgNutrient Dense Crop Production Courses - 2011
Vermont Shelburne Farms Shelburne, VT
Saturdays: Dec 4, Mar 5, Apr 30, June 25, Aug 20 The Mountain School Vershire, VT
Sundays: Jan 23, Mar 6, May 1, June 26, Aug 21New York Hawthorne Valley Farm Ghent, NY
Sundays: Jan 16, Mar 20, May 22, July 17, Sep 18 Stone Barns Center Pocantico Hills, NY
Saturdays: Dec 18, Mar 12, May 14, July 16, Sep 17Connecticut White Gate Farm East Lyme, CT
Sundays: Dec 19, Mar 13, May 15, July 10, Sep 11Massachusetts Simple Gifts Farm Amherst, MA
Saturdays: Nov 20, Feb 12, May 7, July 9, Sep 10 Brix Bounty Farm Dartmouth, MA
Saturdays: Jan 8, Feb 19, Apr 16, June 18, Aug 27 Jones Farm Chelmsford, MA
Sundays: Jan 9, Feb 20, Apr 17, June 19, Aug 28
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You Can’t Eat Dollar Bills –A More Delicious Endowment for Future Generations
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Thank You for Building our Future Endowment
For more information on this presentation contact:
Derek ChristiansonBrix Bounty Farm858 Tucker Road
Dartmouth, MA 02747508-992-1868
[email protected]://www.brixbounty.com