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Barry Fisher, Conservation Agronomist NRCS, Indiana Email: barry.fisher@in.usda.gov Jump Start Soil Reclamation with No-Till and Cover Crops Capturing the Potential of High Soil Quality!
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We Should Expect High Yields with High Residue Cropping Systems Managing for Soil Quality Will Be Necessary Are Initial Yields Sustainable ?
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Reinvestments That Pay $ Drainage systems Lime Cover Crops Soil Quality!
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Reinvestments That Pay $ Equipment Technology Buffers Yield and efficiency!
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Poor Structure= Yield Loss
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Soil Nutrition Management of Base Cations Becomes More Important when soil is disrupted Management of Base Cations Becomes More Important when soil is disrupted Ca- 70% Mg- 15% K- 3.5% Ca- 70% Mg- 15% K- 3.5% High Calcium Lime is preferred for no- tillHigh Calcium Lime is preferred for no- till
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Soil Nutrition Each 1 % of O.M. contains: 10,000 lbs. of C 1000 lbs. of N 100 lbs. of P 100 lbs. of S
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Manage and Remove Compaction Consider cover crops →Maximize weight distribution An in-line ripper may needed Evaluate depth and extent
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Soil Quality = High Yield Potential Biodiversity is the fastest way to high Soil Quality Biodiversity provides-Flexibility-Resilience- Resistance Above ground diversity is a mirror for below ground diversity. Getting root diversity (deep, fibrous, tap…) Helps you tap into nutrients that are otherwise unavailable. Jill Clapperton 2008 NNTC
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Diversify your cover Brassicas and Oats
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Build and Maximize Biology and Vertical Structure Soybean root following previous root channel
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Drilled on Oct. 1 at 15 lbs./ac. Roots down to 51” on April 8 Annual Ryegrass Cover Crop DeSutter Farm-Fountain Co.
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Corn Roots down 70”+ in August
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We can package a system of soil building practices! No-Till Nutrient Management Cover Crops Buffers
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IN FY08 EQIP = $ 19 million Nutrient Management- –$3 million Cover Crops- –$3 million No-Till/Strip-Till- – $3.4 million Waste Utilization- –$2 million
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EQIP Cover Crops – Acres per Year Contracted
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IN FY09 EQIP = $ 11.4 million Cover Crops- $2 million
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EQIP Cover Crops – % of Budget Contracted
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Field Office Technical Guide (FOTG) Section IV Seeding Tool Google- eFOTGGoogle- eFOTG March 2009March 2009 ExcelExcel
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Create a Mix
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SARE-Managing Cover Crops Profitably
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Cover Crops Year-round bio- mass production should be targeted. Sequester these gains with continuous No- Till/Strip-Till Systems
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How will you seed it? Manure plus Cover Crops Tim Harrigan, MSU- Slurry Seeded OSR, Oriental Mustard, and other CCs. Slurry seeded with dairy manure produced significantly higher total biomass
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How will you seed it? Air Seeder on a Harrow 43’ swath at 10 mph Fast Cheap Provides a random plant spacing
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How will you seed it? Fly it on Most flexible timing Fast $12-$16/ac Provides a random plant spacing Variable results?
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How will you seed it? Drill it Most time consuming Slower $12-$16/ac Provides row plant spacing Surest results
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COVER CROP Termination KILL IT EARLY! KILL IT LATE! EXPERTS AGREE IT DEPENDS!
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COVER CROP Termination PLAN EARLY KILL TOUGH ONES EARLY Ryegrass- April 1, or before “Jointing” MAXIMIZE TRANSLOCATION Spray on Sunny Days (>55 degrees) Use AMS with Low pH Water Avoid antagonism NO TRIAZINE Use 10 Gallons of Water or Less Apply Early in the Day ( quit by 2 PM)
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How will you Kill It? Herbicide…Avoid antagonism! Consider the modes of action % control Glyphosate 51% Plumer 2006
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How will you Kill It? Herbicide…Avoid antagonism! Consider the modes of action % control Glyphosate 41% Plumer 2006
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No-Till Planter set-up and maintenance is critical
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Spread the Weight! Spread the due… Residue!
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It’s best to use a systematic approach
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Reduced Inner Diameter (RID) Gage Wheel Tires No-Till planter attachments
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Reduced Inner Diameter (RID) Gage Wheel Tires- right side No-Till planter attachments Significantly reduces the weight directly over the see slot RID
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Walking Gage Wheels
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Seed Firmer
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Nitrogen Management in No- Till Corn Nitrogen Management in No- Till Corn In order to manage N we must first understand the changes in Carbon and Nitrogen cycles under No Tillage
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Wooster OH Carbon Study (0-2 inches) Continuous corn Martens et al.
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Organic Carbon to Total Nitrogen Relationship (Silty soil, 130 years) Martens et al
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Nitrogen/Carbon management Building Carbon in the soil takes Nitrogen Plants have a hard time out competing microbes for ammonium At least 35-70# of N must be available during the 1 st 40 days
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Nitrogen/Carbon management When Applying Spring P & K use DAP If you plan to apply a PP herbicide, use 15-20 gal. of 28% as carrier Side dress as early as possible
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Starter Placement and Content 2 X 2 is the best all around system Pop-up may be added, or the next best where equipment is limited
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Starter Placement and Content Having no starter is fine as long as you can live with a 10-40 bu. yield loss Starter should have at least 20-50 lbs. of N Consider S & K in starter
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Barry Fisher, State Agronomist Email: barry.fisher@in.usda.gov “…Expect Success!”
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Cover Crop Web Links http://www.covercrops.msu.edu/http://www.sare.org/publications/http://www.sarep.ucdavis.edu/http://www.nrcs.usda.gov/technical/efotg/http://www.mccc.msu.edu/ http://web.extension.uiuc.edu/regions/ag/ag 2.htm
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