SlideShare ist ein Scribd-Unternehmen logo
1 von 28
Sarah Carlson
Practical Farmers of Iowa
Midwest Cover Crop Director
sarah@practicalfarmers.org 515-232-5661
Cover Crops, not just for Conservation Anymore
Cover Crop Effect on Weeds in the Northern Cornbelt:
a meta-analysis
Weed Pressure Early
No Cover Crop
Photos from Jason Ness, Coon Rapids
WHAT ARE FARMERS’
COVER CROP GOALS?
• Livestock feed?
• Nitrogen scavenging?
• Manure management?
• Improved water quality?
• Weed control?
• Reduced soil erosion?
• Increased yield?
• Build soil carbon?
• Make a landlord happy?
• Wildlife benefit?
Take home messages
WHY is the Cornbelt “leaky”?
HOW does Practical Farmers work?
WHAT are our Meta-analysis results?
WHY IS
THE CORNBELT
“LEAKY”?
Soybean
Small Grain +
Legume
Corn
52% of precipitation occurs between Oct-May in central Iowa
Heggenstaller et al. (2008)
Greatest loss of nutrients is outside the cropping season (Kaspar et al., 2007)
HOW DOES PRACTICAL
FARMERS WORK?
When should I kill
cover crops before
soybeans?
$50+
$10+
Great weed
control!
META-ANALYSIS TEAM
CHRIS WILBECK
ALISHA BOWER
STEFAN GAILANS
Criteria
i) Research conducted in IL, IN, IA, MI, MN, OH, WI
(Upper MS Basin)
ii) corn or soybean harvested for grain was the main
crop;
iii) cover crops were seeded August prior to main crop;
iv) weed biomass or density or % control, cover crop
species and biomass, and main crop yield was available.
Research years of studies: 1985-2013
Yield Response variable
calculated
Yield (with cover crop) ÷
Yield (without cover crop)
Moderating Variables Evaluated:
•Cover Crop Aboveground Biomass
•Cover Crop Type
•Cover Crop Planting Date & Termination
Date/Method
•% Weed Control
Weed Response variable
calculated
Weed Bio (with cover crop) ÷
Weed Bio (without cover crop)
Cover Crop (CC) Effect on Weeds in C-S
• CC biomass
negatively correlated
with weed biomass
• Increase CC biomass
(2500+ lbs/A) to reach
50% total weed control
potential
• Greater grass cc biomass
could decrease corn yield
• Researchers sampled
larger cc in soybean
studies
• Slight soybean yield bump
with greater cc biomass
Brassica
Grass
Legume
Yield (cc) /
Yield (no cc)
Corn
Cover Crop Biomass (lbs/A)
Yield (cc) /
Yield (no cc)
Soybean
Cover Crop Biomass (lbs/A)
Grass
Cover Crop (CC) Effect on Weeds in C-S
• CC biomass
negatively correlated
with weed biomass
• Increase CC biomass
(2500+ lbs/A) to reach
50% total weed control
potential
• Greater grass cc biomass
could decrease corn yield
• Researchers sampled
larger cc in soybean
studies
• Slight soybean yield bump
with greater cc biomass
USE THE CASH IN COVER CROPS TO SCALE CONSERVATION
Take home messages
pficovercrops@practicalfarmers.org
Sarah Carlson
sarah@practicalfarmers.org
515-232-5661
WHY is the Cornbelt “leaky”?
HOW does Practical Farmers work?
WHAT are our Meta-analysis results?

Weitere ähnliche Inhalte

Was ist angesagt?

Red Devon Adaptive Grazing 9.09.16
Red Devon Adaptive Grazing 9.09.16Red Devon Adaptive Grazing 9.09.16
Red Devon Adaptive Grazing 9.09.16joycefarms
 
Dr. Laura Lindsey - 2019 Soybean Research Wrap Up
Dr. Laura Lindsey - 2019 Soybean Research Wrap UpDr. Laura Lindsey - 2019 Soybean Research Wrap Up
Dr. Laura Lindsey - 2019 Soybean Research Wrap UpJohn Blue
 
Emerging patterns and goals for on the road
Emerging patterns and goals for on the roadEmerging patterns and goals for on the road
Emerging patterns and goals for on the roadnephelps
 
Best Management Practices Adoption Status of Small Farmers in Central and Eas...
Best Management Practices Adoption Status of Small Farmers in Central and Eas...Best Management Practices Adoption Status of Small Farmers in Central and Eas...
Best Management Practices Adoption Status of Small Farmers in Central and Eas...Bijesh Mishra
 
SSAWG 2020 - Regenerating Soils Using the Five Principles of Soil Health
SSAWG 2020 - Regenerating Soils Using the Five Principles of Soil HealthSSAWG 2020 - Regenerating Soils Using the Five Principles of Soil Health
SSAWG 2020 - Regenerating Soils Using the Five Principles of Soil HealthNinaPrater
 
Southern Valley Spring 2015 Update
Southern Valley Spring 2015 UpdateSouthern Valley Spring 2015 Update
Southern Valley Spring 2015 UpdateSouthernValley
 
Measuring Agricultural Health
Measuring Agricultural HealthMeasuring Agricultural Health
Measuring Agricultural Healththelenju
 
Undergrad Presentation
Undergrad PresentationUndergrad Presentation
Undergrad PresentationJarrett Jensen
 
No till irrigation_econ_comparison_22013
No till irrigation_econ_comparison_22013No till irrigation_econ_comparison_22013
No till irrigation_econ_comparison_22013dostdiek4
 
Andrew bergin, no till cereals
Andrew bergin, no till cerealsAndrew bergin, no till cereals
Andrew bergin, no till cerealsIrishFarmers
 
CCE Summer Internship Poster 2016
CCE Summer Internship Poster 2016CCE Summer Internship Poster 2016
CCE Summer Internship Poster 2016Dennis Atiyeh
 
Goat Markets in Texas by R. Reid Redden, Phd
Goat Markets in Texas by R. Reid Redden, PhdGoat Markets in Texas by R. Reid Redden, Phd
Goat Markets in Texas by R. Reid Redden, PhdRGVSmallAcreage
 

Was ist angesagt? (20)

Red Devon Adaptive Grazing 9.09.16
Red Devon Adaptive Grazing 9.09.16Red Devon Adaptive Grazing 9.09.16
Red Devon Adaptive Grazing 9.09.16
 
Dr. Laura Lindsey - 2019 Soybean Research Wrap Up
Dr. Laura Lindsey - 2019 Soybean Research Wrap UpDr. Laura Lindsey - 2019 Soybean Research Wrap Up
Dr. Laura Lindsey - 2019 Soybean Research Wrap Up
 
Emerging patterns and goals for on the road
Emerging patterns and goals for on the roadEmerging patterns and goals for on the road
Emerging patterns and goals for on the road
 
Planning for Grassfed Success
Planning for Grassfed SuccessPlanning for Grassfed Success
Planning for Grassfed Success
 
Best Management Practices Adoption Status of Small Farmers in Central and Eas...
Best Management Practices Adoption Status of Small Farmers in Central and Eas...Best Management Practices Adoption Status of Small Farmers in Central and Eas...
Best Management Practices Adoption Status of Small Farmers in Central and Eas...
 
SSAWG 2020 - Regenerating Soils Using the Five Principles of Soil Health
SSAWG 2020 - Regenerating Soils Using the Five Principles of Soil HealthSSAWG 2020 - Regenerating Soils Using the Five Principles of Soil Health
SSAWG 2020 - Regenerating Soils Using the Five Principles of Soil Health
 
Nitrogen (1)
Nitrogen (1)Nitrogen (1)
Nitrogen (1)
 
Greg Luce
Greg LuceGreg Luce
Greg Luce
 
Southern Valley Spring 2015 Update
Southern Valley Spring 2015 UpdateSouthern Valley Spring 2015 Update
Southern Valley Spring 2015 Update
 
Measuring Agricultural Health
Measuring Agricultural HealthMeasuring Agricultural Health
Measuring Agricultural Health
 
Undergrad Presentation
Undergrad PresentationUndergrad Presentation
Undergrad Presentation
 
Effect of Extended Grazing Management on Economics & Manure Distribution
Effect of Extended Grazing Management on Economics & Manure DistributionEffect of Extended Grazing Management on Economics & Manure Distribution
Effect of Extended Grazing Management on Economics & Manure Distribution
 
Emerging patterns
Emerging patterns Emerging patterns
Emerging patterns
 
No till irrigation_econ_comparison_22013
No till irrigation_econ_comparison_22013No till irrigation_econ_comparison_22013
No till irrigation_econ_comparison_22013
 
July 29-1030-Jim Hershey
July 29-1030-Jim HersheyJuly 29-1030-Jim Hershey
July 29-1030-Jim Hershey
 
Andrew bergin, no till cereals
Andrew bergin, no till cerealsAndrew bergin, no till cereals
Andrew bergin, no till cereals
 
Backyard Composting
Backyard CompostingBackyard Composting
Backyard Composting
 
CCE Summer Internship Poster 2016
CCE Summer Internship Poster 2016CCE Summer Internship Poster 2016
CCE Summer Internship Poster 2016
 
17. Carbon Farming
17. Carbon Farming17. Carbon Farming
17. Carbon Farming
 
Goat Markets in Texas by R. Reid Redden, Phd
Goat Markets in Texas by R. Reid Redden, PhdGoat Markets in Texas by R. Reid Redden, Phd
Goat Markets in Texas by R. Reid Redden, Phd
 

Ähnlich wie Cover Crops, not just for Conservation Anymore

Quincy2015pptx
Quincy2015pptxQuincy2015pptx
Quincy2015pptxjbgruver
 
2018 Oregon Wine Symposium | Techniques for Managing High-Vigor Vineyards - ...
 2018 Oregon Wine Symposium | Techniques for Managing High-Vigor Vineyards - ... 2018 Oregon Wine Symposium | Techniques for Managing High-Vigor Vineyards - ...
2018 Oregon Wine Symposium | Techniques for Managing High-Vigor Vineyards - ...Oregon Wine Board
 
Biomass shifts and suppresses weed populations under CA. Michael Mulvaney
Biomass shifts and suppresses weed populations under CA. Michael MulvaneyBiomass shifts and suppresses weed populations under CA. Michael Mulvaney
Biomass shifts and suppresses weed populations under CA. Michael MulvaneyJoanna Hicks
 
The Lazy Farmer's Guide to Improving Crop Yields
The Lazy Farmer's Guide to Improving Crop YieldsThe Lazy Farmer's Guide to Improving Crop Yields
The Lazy Farmer's Guide to Improving Crop YieldsDr Aniruddha Malpani
 
Compost Sequesters Carbon & Delivers Other Ecosystem Benefits
Compost Sequesters Carbon & Delivers Other Ecosystem BenefitsCompost Sequesters Carbon & Delivers Other Ecosystem Benefits
Compost Sequesters Carbon & Delivers Other Ecosystem BenefitsVirginia Streeter
 
Sustainability developments in big agriculture
Sustainability developments in big agricultureSustainability developments in big agriculture
Sustainability developments in big agricultureCari Rincker
 
The science behind the selection of native plant materials
The science behind the selection of native plant materialsThe science behind the selection of native plant materials
The science behind the selection of native plant materialsAlexis Gibson
 
Enhancing farmers' income through organic farming by Dr. L. Jeebit
Enhancing farmers' income through organic farming by Dr. L. Jeebit Enhancing farmers' income through organic farming by Dr. L. Jeebit
Enhancing farmers' income through organic farming by Dr. L. Jeebit Jeebit Singh
 
Finding the best fit
Finding the best fitFinding the best fit
Finding the best fitjbgruver
 
Capturing the full potential of cover crops
Capturing the full potential of cover cropsCapturing the full potential of cover crops
Capturing the full potential of cover cropsjbgruver
 
Eric Boles - Healthy Animals = Healthy Planet
Eric Boles - Healthy Animals = Healthy PlanetEric Boles - Healthy Animals = Healthy Planet
Eric Boles - Healthy Animals = Healthy PlanetJohn Blue
 
Dr. Ryan Haden - Interseeding Cover Crops into Corn and Soybeans
Dr. Ryan Haden - Interseeding Cover Crops into Corn and SoybeansDr. Ryan Haden - Interseeding Cover Crops into Corn and Soybeans
Dr. Ryan Haden - Interseeding Cover Crops into Corn and SoybeansJohn Blue
 

Ähnlich wie Cover Crops, not just for Conservation Anymore (20)

Quincy2015pptx
Quincy2015pptxQuincy2015pptx
Quincy2015pptx
 
2018 Oregon Wine Symposium | Techniques for Managing High-Vigor Vineyards - ...
 2018 Oregon Wine Symposium | Techniques for Managing High-Vigor Vineyards - ... 2018 Oregon Wine Symposium | Techniques for Managing High-Vigor Vineyards - ...
2018 Oregon Wine Symposium | Techniques for Managing High-Vigor Vineyards - ...
 
Biomass shifts and suppresses weed populations under CA. Michael Mulvaney
Biomass shifts and suppresses weed populations under CA. Michael MulvaneyBiomass shifts and suppresses weed populations under CA. Michael Mulvaney
Biomass shifts and suppresses weed populations under CA. Michael Mulvaney
 
Sustainable Agriculture - Christoph Wand - 21
Sustainable Agriculture - Christoph Wand - 21Sustainable Agriculture - Christoph Wand - 21
Sustainable Agriculture - Christoph Wand - 21
 
Environmental benefits of organic systems
Environmental benefits of organic systemsEnvironmental benefits of organic systems
Environmental benefits of organic systems
 
July 31-930-Callia Tellez
July 31-930-Callia TellezJuly 31-930-Callia Tellez
July 31-930-Callia Tellez
 
Chefs to the rescue
Chefs to the rescueChefs to the rescue
Chefs to the rescue
 
The Lazy Farmer's Guide to Improving Crop Yields
The Lazy Farmer's Guide to Improving Crop YieldsThe Lazy Farmer's Guide to Improving Crop Yields
The Lazy Farmer's Guide to Improving Crop Yields
 
July 29-1030-Lisa Blazure
July 29-1030-Lisa BlazureJuly 29-1030-Lisa Blazure
July 29-1030-Lisa Blazure
 
Steps to a sustainable agriculture overview
Steps to a sustainable agriculture overviewSteps to a sustainable agriculture overview
Steps to a sustainable agriculture overview
 
Compost Sequesters Carbon & Delivers Other Ecosystem Benefits
Compost Sequesters Carbon & Delivers Other Ecosystem BenefitsCompost Sequesters Carbon & Delivers Other Ecosystem Benefits
Compost Sequesters Carbon & Delivers Other Ecosystem Benefits
 
Sustainability developments in big agriculture
Sustainability developments in big agricultureSustainability developments in big agriculture
Sustainability developments in big agriculture
 
The science behind the selection of native plant materials
The science behind the selection of native plant materialsThe science behind the selection of native plant materials
The science behind the selection of native plant materials
 
Enhancing farmers' income through organic farming by Dr. L. Jeebit
Enhancing farmers' income through organic farming by Dr. L. Jeebit Enhancing farmers' income through organic farming by Dr. L. Jeebit
Enhancing farmers' income through organic farming by Dr. L. Jeebit
 
Finding the best fit
Finding the best fitFinding the best fit
Finding the best fit
 
Capturing the full potential of cover crops
Capturing the full potential of cover cropsCapturing the full potential of cover crops
Capturing the full potential of cover crops
 
Eric Boles - Healthy Animals = Healthy Planet
Eric Boles - Healthy Animals = Healthy PlanetEric Boles - Healthy Animals = Healthy Planet
Eric Boles - Healthy Animals = Healthy Planet
 
Dr. Ryan Haden - Interseeding Cover Crops into Corn and Soybeans
Dr. Ryan Haden - Interseeding Cover Crops into Corn and SoybeansDr. Ryan Haden - Interseeding Cover Crops into Corn and Soybeans
Dr. Ryan Haden - Interseeding Cover Crops into Corn and Soybeans
 
Learning Event No. 8, Session 4: Niggli. ARDD2012 Rio
Learning Event No. 8, Session 4: Niggli. ARDD2012 RioLearning Event No. 8, Session 4: Niggli. ARDD2012 Rio
Learning Event No. 8, Session 4: Niggli. ARDD2012 Rio
 
Nutrient Master Class for Canola Growers
Nutrient Master Class for Canola GrowersNutrient Master Class for Canola Growers
Nutrient Master Class for Canola Growers
 

Mehr von Soil and Water Conservation Society

Mehr von Soil and Water Conservation Society (20)

September 1 - 0939 - Catherine DeLong.pptx
September 1 - 0939 - Catherine DeLong.pptxSeptember 1 - 0939 - Catherine DeLong.pptx
September 1 - 0939 - Catherine DeLong.pptx
 
September 1 - 830 - Chris Hay
September 1 - 830 - Chris HaySeptember 1 - 830 - Chris Hay
September 1 - 830 - Chris Hay
 
August 31 - 0239 - Yuchuan Fan
August 31 - 0239 - Yuchuan FanAugust 31 - 0239 - Yuchuan Fan
August 31 - 0239 - Yuchuan Fan
 
August 31 - 0216 - Babak Dialameh
August 31 - 0216 - Babak DialamehAugust 31 - 0216 - Babak Dialameh
August 31 - 0216 - Babak Dialameh
 
August 31 - 0153 - San Simon
August 31 - 0153 - San SimonAugust 31 - 0153 - San Simon
August 31 - 0153 - San Simon
 
August 31 - 0130 - Chuck Brandel
August 31 - 0130 - Chuck BrandelAugust 31 - 0130 - Chuck Brandel
August 31 - 0130 - Chuck Brandel
 
September 1 - 1139 - Ainis Lagzdins
September 1 - 1139 - Ainis LagzdinsSeptember 1 - 1139 - Ainis Lagzdins
September 1 - 1139 - Ainis Lagzdins
 
September 1 - 1116 - David Whetter
September 1 - 1116 - David WhetterSeptember 1 - 1116 - David Whetter
September 1 - 1116 - David Whetter
 
September 1 - 1053 - Matt Helmers
September 1 - 1053 - Matt HelmersSeptember 1 - 1053 - Matt Helmers
September 1 - 1053 - Matt Helmers
 
September 1 - 1030 - Chandra Madramootoo
September 1 - 1030 - Chandra MadramootooSeptember 1 - 1030 - Chandra Madramootoo
September 1 - 1030 - Chandra Madramootoo
 
August 31 - 1139 - Mitchell Watkins
August 31 - 1139 - Mitchell WatkinsAugust 31 - 1139 - Mitchell Watkins
August 31 - 1139 - Mitchell Watkins
 
August 31 - 1116 - Shiv Prasher
August 31 - 1116 - Shiv PrasherAugust 31 - 1116 - Shiv Prasher
August 31 - 1116 - Shiv Prasher
 
August 31 - 1053 - Ehsan Ghane
August 31 - 1053 - Ehsan GhaneAugust 31 - 1053 - Ehsan Ghane
August 31 - 1053 - Ehsan Ghane
 
August 31 - 1030 - Joseph A. Bubcanec
August 31 - 1030 - Joseph A. BubcanecAugust 31 - 1030 - Joseph A. Bubcanec
August 31 - 1030 - Joseph A. Bubcanec
 
September 1 - 130 - McBride
September 1 - 130 - McBrideSeptember 1 - 130 - McBride
September 1 - 130 - McBride
 
September 1 - 0216 - Jessica D'Ambrosio
September 1 - 0216 - Jessica D'AmbrosioSeptember 1 - 0216 - Jessica D'Ambrosio
September 1 - 0216 - Jessica D'Ambrosio
 
September 1 - 0153 - Mike Pniewski
September 1 - 0153 - Mike PniewskiSeptember 1 - 0153 - Mike Pniewski
September 1 - 0153 - Mike Pniewski
 
September 1 - 0130 - Johnathan Witter
September 1 - 0130 - Johnathan WitterSeptember 1 - 0130 - Johnathan Witter
September 1 - 0130 - Johnathan Witter
 
August 31 - 1139 - Melisa Luymes
August 31 - 1139 - Melisa LuymesAugust 31 - 1139 - Melisa Luymes
August 31 - 1139 - Melisa Luymes
 
August 31 - 1116 - Hassam Moursi
August 31 - 1116 - Hassam MoursiAugust 31 - 1116 - Hassam Moursi
August 31 - 1116 - Hassam Moursi
 

Kürzlich hochgeladen

Call On 6297143586 Pimpri Chinchwad Call Girls In All Pune 24/7 Provide Call...
Call On 6297143586  Pimpri Chinchwad Call Girls In All Pune 24/7 Provide Call...Call On 6297143586  Pimpri Chinchwad Call Girls In All Pune 24/7 Provide Call...
Call On 6297143586 Pimpri Chinchwad Call Girls In All Pune 24/7 Provide Call...tanu pandey
 
Presentation: Farmer-led climate adaptation - Project launch and overview by ...
Presentation: Farmer-led climate adaptation - Project launch and overview by ...Presentation: Farmer-led climate adaptation - Project launch and overview by ...
Presentation: Farmer-led climate adaptation - Project launch and overview by ...AICCRA
 
Cyclone Case Study Odisha 1999 Super Cyclone in India.
Cyclone Case Study Odisha 1999 Super Cyclone in India.Cyclone Case Study Odisha 1999 Super Cyclone in India.
Cyclone Case Study Odisha 1999 Super Cyclone in India.cojitesh
 
Hot Call Girls |Delhi |Preet Vihar ☎ 9711199171 Book Your One night Stand
Hot Call Girls |Delhi |Preet Vihar ☎ 9711199171 Book Your One night StandHot Call Girls |Delhi |Preet Vihar ☎ 9711199171 Book Your One night Stand
Hot Call Girls |Delhi |Preet Vihar ☎ 9711199171 Book Your One night Standkumarajju5765
 
Call Girls In Bloom Boutique | GK-1 ☎ 9990224454 High Class Delhi NCR 24 Hour...
Call Girls In Bloom Boutique | GK-1 ☎ 9990224454 High Class Delhi NCR 24 Hour...Call Girls In Bloom Boutique | GK-1 ☎ 9990224454 High Class Delhi NCR 24 Hour...
Call Girls In Bloom Boutique | GK-1 ☎ 9990224454 High Class Delhi NCR 24 Hour...rajputriyana310
 
Call Girls Talegaon Dabhade Call Me 7737669865 Budget Friendly No Advance Boo...
Call Girls Talegaon Dabhade Call Me 7737669865 Budget Friendly No Advance Boo...Call Girls Talegaon Dabhade Call Me 7737669865 Budget Friendly No Advance Boo...
Call Girls Talegaon Dabhade Call Me 7737669865 Budget Friendly No Advance Boo...roncy bisnoi
 
CSR_Module5_Green Earth Initiative, Tree Planting Day
CSR_Module5_Green Earth Initiative, Tree Planting DayCSR_Module5_Green Earth Initiative, Tree Planting Day
CSR_Module5_Green Earth Initiative, Tree Planting DayGeorgeDiamandis11
 
Call Girls Budhwar Peth Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Budhwar Peth Call Me 7737669865 Budget Friendly No Advance BookingCall Girls Budhwar Peth Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Budhwar Peth Call Me 7737669865 Budget Friendly No Advance Bookingroncy bisnoi
 
Verified Trusted Kalyani Nagar Call Girls 8005736733 𝐈𝐍𝐃𝐄𝐏𝐄𝐍𝐃𝐄𝐍𝐓 Call 𝐆𝐈𝐑𝐋 𝐕...
Verified Trusted Kalyani Nagar Call Girls  8005736733 𝐈𝐍𝐃𝐄𝐏𝐄𝐍𝐃𝐄𝐍𝐓 Call 𝐆𝐈𝐑𝐋 𝐕...Verified Trusted Kalyani Nagar Call Girls  8005736733 𝐈𝐍𝐃𝐄𝐏𝐄𝐍𝐃𝐄𝐍𝐓 Call 𝐆𝐈𝐑𝐋 𝐕...
Verified Trusted Kalyani Nagar Call Girls 8005736733 𝐈𝐍𝐃𝐄𝐏𝐄𝐍𝐃𝐄𝐍𝐓 Call 𝐆𝐈𝐑𝐋 𝐕...tanu pandey
 
VIP Model Call Girls Chakan ( Pune ) Call ON 8005736733 Starting From 5K to 2...
VIP Model Call Girls Chakan ( Pune ) Call ON 8005736733 Starting From 5K to 2...VIP Model Call Girls Chakan ( Pune ) Call ON 8005736733 Starting From 5K to 2...
VIP Model Call Girls Chakan ( Pune ) Call ON 8005736733 Starting From 5K to 2...SUHANI PANDEY
 
DENR EPR Law Compliance Updates April 2024
DENR EPR Law Compliance Updates April 2024DENR EPR Law Compliance Updates April 2024
DENR EPR Law Compliance Updates April 2024itadmin50
 
Call Girls Moshi Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Moshi Call Me 7737669865 Budget Friendly No Advance BookingCall Girls Moshi Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Moshi Call Me 7737669865 Budget Friendly No Advance Bookingroncy bisnoi
 
Koregaon Park ( Call Girls ) Pune 6297143586 Hot Model With Sexy Bhabi Read...
Koregaon Park ( Call Girls ) Pune  6297143586  Hot Model With Sexy Bhabi Read...Koregaon Park ( Call Girls ) Pune  6297143586  Hot Model With Sexy Bhabi Read...
Koregaon Park ( Call Girls ) Pune 6297143586 Hot Model With Sexy Bhabi Read...tanu pandey
 
VVIP Pune Call Girls Vishal Nagar WhatSapp Number 8005736733 With Elite Staff...
VVIP Pune Call Girls Vishal Nagar WhatSapp Number 8005736733 With Elite Staff...VVIP Pune Call Girls Vishal Nagar WhatSapp Number 8005736733 With Elite Staff...
VVIP Pune Call Girls Vishal Nagar WhatSapp Number 8005736733 With Elite Staff...SUHANI PANDEY
 
The Most Attractive Pune Call Girls Shirwal 8250192130 Will You Miss This Cha...
The Most Attractive Pune Call Girls Shirwal 8250192130 Will You Miss This Cha...The Most Attractive Pune Call Girls Shirwal 8250192130 Will You Miss This Cha...
The Most Attractive Pune Call Girls Shirwal 8250192130 Will You Miss This Cha...ranjana rawat
 
Proposed Amendments to Chapter 15, Article X: Wetland Conservation Areas
Proposed Amendments to Chapter 15, Article X: Wetland Conservation AreasProposed Amendments to Chapter 15, Article X: Wetland Conservation Areas
Proposed Amendments to Chapter 15, Article X: Wetland Conservation Areas💥Victoria K. Colangelo
 
Call Girls Service Pune ₹7.5k Pick Up & Drop With Cash Payment 8005736733 Cal...
Call Girls Service Pune ₹7.5k Pick Up & Drop With Cash Payment 8005736733 Cal...Call Girls Service Pune ₹7.5k Pick Up & Drop With Cash Payment 8005736733 Cal...
Call Girls Service Pune ₹7.5k Pick Up & Drop With Cash Payment 8005736733 Cal...SUHANI PANDEY
 
Enhancing forest data transparency for climate action
Enhancing forest data transparency for climate actionEnhancing forest data transparency for climate action
Enhancing forest data transparency for climate actionRocioDanicaCondorGol1
 

Kürzlich hochgeladen (20)

Call On 6297143586 Pimpri Chinchwad Call Girls In All Pune 24/7 Provide Call...
Call On 6297143586  Pimpri Chinchwad Call Girls In All Pune 24/7 Provide Call...Call On 6297143586  Pimpri Chinchwad Call Girls In All Pune 24/7 Provide Call...
Call On 6297143586 Pimpri Chinchwad Call Girls In All Pune 24/7 Provide Call...
 
Presentation: Farmer-led climate adaptation - Project launch and overview by ...
Presentation: Farmer-led climate adaptation - Project launch and overview by ...Presentation: Farmer-led climate adaptation - Project launch and overview by ...
Presentation: Farmer-led climate adaptation - Project launch and overview by ...
 
Cyclone Case Study Odisha 1999 Super Cyclone in India.
Cyclone Case Study Odisha 1999 Super Cyclone in India.Cyclone Case Study Odisha 1999 Super Cyclone in India.
Cyclone Case Study Odisha 1999 Super Cyclone in India.
 
Hot Call Girls |Delhi |Preet Vihar ☎ 9711199171 Book Your One night Stand
Hot Call Girls |Delhi |Preet Vihar ☎ 9711199171 Book Your One night StandHot Call Girls |Delhi |Preet Vihar ☎ 9711199171 Book Your One night Stand
Hot Call Girls |Delhi |Preet Vihar ☎ 9711199171 Book Your One night Stand
 
(INDIRA) Call Girl Katra Call Now 8617697112 Katra Escorts 24x7
(INDIRA) Call Girl Katra Call Now 8617697112 Katra Escorts 24x7(INDIRA) Call Girl Katra Call Now 8617697112 Katra Escorts 24x7
(INDIRA) Call Girl Katra Call Now 8617697112 Katra Escorts 24x7
 
Call Girls In Bloom Boutique | GK-1 ☎ 9990224454 High Class Delhi NCR 24 Hour...
Call Girls In Bloom Boutique | GK-1 ☎ 9990224454 High Class Delhi NCR 24 Hour...Call Girls In Bloom Boutique | GK-1 ☎ 9990224454 High Class Delhi NCR 24 Hour...
Call Girls In Bloom Boutique | GK-1 ☎ 9990224454 High Class Delhi NCR 24 Hour...
 
Call Girls Talegaon Dabhade Call Me 7737669865 Budget Friendly No Advance Boo...
Call Girls Talegaon Dabhade Call Me 7737669865 Budget Friendly No Advance Boo...Call Girls Talegaon Dabhade Call Me 7737669865 Budget Friendly No Advance Boo...
Call Girls Talegaon Dabhade Call Me 7737669865 Budget Friendly No Advance Boo...
 
CSR_Module5_Green Earth Initiative, Tree Planting Day
CSR_Module5_Green Earth Initiative, Tree Planting DayCSR_Module5_Green Earth Initiative, Tree Planting Day
CSR_Module5_Green Earth Initiative, Tree Planting Day
 
Call Girls Budhwar Peth Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Budhwar Peth Call Me 7737669865 Budget Friendly No Advance BookingCall Girls Budhwar Peth Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Budhwar Peth Call Me 7737669865 Budget Friendly No Advance Booking
 
Verified Trusted Kalyani Nagar Call Girls 8005736733 𝐈𝐍𝐃𝐄𝐏𝐄𝐍𝐃𝐄𝐍𝐓 Call 𝐆𝐈𝐑𝐋 𝐕...
Verified Trusted Kalyani Nagar Call Girls  8005736733 𝐈𝐍𝐃𝐄𝐏𝐄𝐍𝐃𝐄𝐍𝐓 Call 𝐆𝐈𝐑𝐋 𝐕...Verified Trusted Kalyani Nagar Call Girls  8005736733 𝐈𝐍𝐃𝐄𝐏𝐄𝐍𝐃𝐄𝐍𝐓 Call 𝐆𝐈𝐑𝐋 𝐕...
Verified Trusted Kalyani Nagar Call Girls 8005736733 𝐈𝐍𝐃𝐄𝐏𝐄𝐍𝐃𝐄𝐍𝐓 Call 𝐆𝐈𝐑𝐋 𝐕...
 
VIP Model Call Girls Chakan ( Pune ) Call ON 8005736733 Starting From 5K to 2...
VIP Model Call Girls Chakan ( Pune ) Call ON 8005736733 Starting From 5K to 2...VIP Model Call Girls Chakan ( Pune ) Call ON 8005736733 Starting From 5K to 2...
VIP Model Call Girls Chakan ( Pune ) Call ON 8005736733 Starting From 5K to 2...
 
DENR EPR Law Compliance Updates April 2024
DENR EPR Law Compliance Updates April 2024DENR EPR Law Compliance Updates April 2024
DENR EPR Law Compliance Updates April 2024
 
Call Girls Moshi Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Moshi Call Me 7737669865 Budget Friendly No Advance BookingCall Girls Moshi Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Moshi Call Me 7737669865 Budget Friendly No Advance Booking
 
Koregaon Park ( Call Girls ) Pune 6297143586 Hot Model With Sexy Bhabi Read...
Koregaon Park ( Call Girls ) Pune  6297143586  Hot Model With Sexy Bhabi Read...Koregaon Park ( Call Girls ) Pune  6297143586  Hot Model With Sexy Bhabi Read...
Koregaon Park ( Call Girls ) Pune 6297143586 Hot Model With Sexy Bhabi Read...
 
VVIP Pune Call Girls Vishal Nagar WhatSapp Number 8005736733 With Elite Staff...
VVIP Pune Call Girls Vishal Nagar WhatSapp Number 8005736733 With Elite Staff...VVIP Pune Call Girls Vishal Nagar WhatSapp Number 8005736733 With Elite Staff...
VVIP Pune Call Girls Vishal Nagar WhatSapp Number 8005736733 With Elite Staff...
 
The Most Attractive Pune Call Girls Shirwal 8250192130 Will You Miss This Cha...
The Most Attractive Pune Call Girls Shirwal 8250192130 Will You Miss This Cha...The Most Attractive Pune Call Girls Shirwal 8250192130 Will You Miss This Cha...
The Most Attractive Pune Call Girls Shirwal 8250192130 Will You Miss This Cha...
 
Proposed Amendments to Chapter 15, Article X: Wetland Conservation Areas
Proposed Amendments to Chapter 15, Article X: Wetland Conservation AreasProposed Amendments to Chapter 15, Article X: Wetland Conservation Areas
Proposed Amendments to Chapter 15, Article X: Wetland Conservation Areas
 
Call Girls Service Pune ₹7.5k Pick Up & Drop With Cash Payment 8005736733 Cal...
Call Girls Service Pune ₹7.5k Pick Up & Drop With Cash Payment 8005736733 Cal...Call Girls Service Pune ₹7.5k Pick Up & Drop With Cash Payment 8005736733 Cal...
Call Girls Service Pune ₹7.5k Pick Up & Drop With Cash Payment 8005736733 Cal...
 
Green Marketing
Green MarketingGreen Marketing
Green Marketing
 
Enhancing forest data transparency for climate action
Enhancing forest data transparency for climate actionEnhancing forest data transparency for climate action
Enhancing forest data transparency for climate action
 

Cover Crops, not just for Conservation Anymore

  • 1. Sarah Carlson Practical Farmers of Iowa Midwest Cover Crop Director sarah@practicalfarmers.org 515-232-5661 Cover Crops, not just for Conservation Anymore Cover Crop Effect on Weeds in the Northern Cornbelt: a meta-analysis
  • 2. Weed Pressure Early No Cover Crop Photos from Jason Ness, Coon Rapids
  • 3. WHAT ARE FARMERS’ COVER CROP GOALS? • Livestock feed? • Nitrogen scavenging? • Manure management? • Improved water quality? • Weed control? • Reduced soil erosion? • Increased yield? • Build soil carbon? • Make a landlord happy? • Wildlife benefit?
  • 4. Take home messages WHY is the Cornbelt “leaky”? HOW does Practical Farmers work? WHAT are our Meta-analysis results?
  • 7.
  • 8. 52% of precipitation occurs between Oct-May in central Iowa Heggenstaller et al. (2008) Greatest loss of nutrients is outside the cropping season (Kaspar et al., 2007)
  • 9.
  • 11. When should I kill cover crops before soybeans?
  • 12.
  • 16. Criteria i) Research conducted in IL, IN, IA, MI, MN, OH, WI (Upper MS Basin) ii) corn or soybean harvested for grain was the main crop; iii) cover crops were seeded August prior to main crop; iv) weed biomass or density or % control, cover crop species and biomass, and main crop yield was available. Research years of studies: 1985-2013
  • 17.
  • 18.
  • 19. Yield Response variable calculated Yield (with cover crop) ÷ Yield (without cover crop) Moderating Variables Evaluated: •Cover Crop Aboveground Biomass •Cover Crop Type •Cover Crop Planting Date & Termination Date/Method •% Weed Control Weed Response variable calculated Weed Bio (with cover crop) ÷ Weed Bio (without cover crop)
  • 20. Cover Crop (CC) Effect on Weeds in C-S • CC biomass negatively correlated with weed biomass • Increase CC biomass (2500+ lbs/A) to reach 50% total weed control potential • Greater grass cc biomass could decrease corn yield • Researchers sampled larger cc in soybean studies • Slight soybean yield bump with greater cc biomass
  • 21.
  • 22.
  • 23.
  • 24. Brassica Grass Legume Yield (cc) / Yield (no cc) Corn Cover Crop Biomass (lbs/A)
  • 25. Yield (cc) / Yield (no cc) Soybean Cover Crop Biomass (lbs/A) Grass
  • 26. Cover Crop (CC) Effect on Weeds in C-S • CC biomass negatively correlated with weed biomass • Increase CC biomass (2500+ lbs/A) to reach 50% total weed control potential • Greater grass cc biomass could decrease corn yield • Researchers sampled larger cc in soybean studies • Slight soybean yield bump with greater cc biomass
  • 27. USE THE CASH IN COVER CROPS TO SCALE CONSERVATION
  • 28. Take home messages pficovercrops@practicalfarmers.org Sarah Carlson sarah@practicalfarmers.org 515-232-5661 WHY is the Cornbelt “leaky”? HOW does Practical Farmers work? WHAT are our Meta-analysis results?