Minimizing Phosphorus Loss with 4R Nutrient Stewardship & Cover - PowerPoint PPT Presentation

Minimizing Phosphorus Loss with 4R Nutrient Stewardship & Cover Crops Nathan Nelson, Kraig Roozeboom, Peter Tomlinson, Gerard Kluitenberg, Phil Barnes, and Jeff Williams Kansas State University

Maximizing returns and minimizing externalities

Phosphorus loss from agriculture can degrade water quality by promoting algal blooms. Centralia Lake, KS. Photo courtesy Kevin Price, 2012

What is the right “place” for P?

Best management practices to reduce P loss  Reduce Erosion (no ‐ till)

Best Management Practices to Reduce P Loss  Sub ‐ surface application of P P loss from Grain Sorghum in 1998 (Kimmell et al., 2001)

Tillage effects on runoff  Increased runoff from no ‐ till can confound effects of reduced erosion 4 ‐ yr average annual runoff in sorghum ‐ soybean cropping systems (Zeimen et al., 2006)

Precipitation Trends for North ‐ east Kansas 30 ‐ yr average monthly precipitation at Manhattan, KS

Can Cover crops reduce P loss?

Research Questions (Objectives)  How does P loss from fall surface ‐ applied fertilizer compare to spring injected P fertilizer (current recommended BMP)? • How does this impact crop production, nutrient use efficiency, and profitability?  Will cover crops reduce P losses? • What are the agronomic, environmental, and economic effects of winter cover crops in corn ‐ soybean rotations?  Will cover crops reduce P losses from fall surface ‐ applied fertilizer?

KAW Field Lab Kansas Agricultural Watersheds Field Lab

Constructed a new waterway

Re ‐ grade and rebuild terraces

Installed pipe outlets

Installed flumes

Methods  Small watershed/field ‐ scale study with natural rainfall  No ‐ till corn ‐ soybean rotation (5 year duration)  Factorial treatment structure • P fertilizer − 0 lbs P 2 O 5 /ac − 50 lbs P 2 O 5 /ac applied in 2x2 placement − 50 lbs P 2 O 5 /ac broadcast in fall • With or without winter cover crop

Field Measurements  Grain Yield  Water Loss (runoff)  Sediment loss  P loss • Dissolved • Total P  N loss • NO 3 & NH 4 • Total N

Field Measurements  Biomass production (crop and cover crop) • Nutrient content of biomass and grain  Nutrient uptake (crop and cover crop) • Nutrient use efficiency – various computations • Environmental efficiency – (Nutrient loss/grain yield)  Economic profitability

Precipitation corn planted cover crop planted P fertilizer broadcast through May 10

Runoff data from May 5, 2015 74.9 mm total precip. 31 to 41 mm total runoff

Runoff data from May 5, 2015 a 10% reduction b in total runoff p < 0.10

Total P concentration in runoff (5/5/15) p < 0.05

Total P load in runoff (5/5/15) p < 0.05

Summary  Too early for any conclusions (preliminary or otherwise)  Results are highly dependent on rainfall • Requires long ‐ term studies to determine trends  Data collection will continue for 5 years

Acknowledgements Thanks to the following individuals for support  David Abel (Graduate Student/RA)  Undergraduate workers ‐ Gus Lamb, Egypt Edwards, Brett Bullinger and Tyler Royle  Morgan Powell ‐ consulting Funding  4R Research Fund  Kansas State Agricultural Experiment Station  Kansas State Department of Agronomy  Kansas Soybean Commission  Kansas Corn Commission

Minimizing Phosphorus Loss with 4R Nutrient Stewardship & Cover - PowerPoint PPT Presentation

Minimizing Phosphorus Loss with 4R Nutrient Stewardship & Cover Crops Nathan Nelson, Kraig Roozeboom, Peter Tomlinson, Gerard Kluitenberg, Phil Barnes, and Jeff Williams Kansas State University Maximizing returns and minimizing externalities

4R Nutrient Stewardship: 4R Nutrient Stewardship: CCA Involvement Lara Moody, P.E. Director of

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Machine Learning (CSE 446): Learning as Minimizing Loss; Least Squares Sham M Kakade c 2018

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Nutrient Monitoring Council 4th Meeting, April 5, 2016, Springfield, IL Nutrient Monitoring

Nutrient Monitoring Council 6th Meeting, September 13, 2016, Springfield, IL Nutrient Monitoring

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Machine Learning (CSE 446): PCA (continued) and Learning as Minimizing Loss Sham M Kakade

at the Stic ickney Water Reclamation Pla lant January 29, 2019 Background Nutrient Standards

Black Phosphorus Field Effect Transistors Albert Liu Black Phosphorus Synthesis Process: Red

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PHOSPHORUS TRADING & WATER QUALITY ______________________ The Total Phosphorus Management

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Minimizing Phosphorus Loss with 4R Nutrient Stewardship & Cover - PowerPoint PPT Presentation

Minimizing Phosphorus Loss with 4R Nutrient Stewardship & Cover Crops Nathan Nelson, Kraig Roozeboom, Peter Tomlinson, Gerard Kluitenberg, Phil Barnes, and Jeff Williams Kansas State University Maximizing returns and minimizing externalities

4R Nutrient Stewardship: 4R Nutrient Stewardship: CCA Involvement Lara Moody, P.E. Director of

Soil Phosphorus and Potassium RNA Chapter 14 1 2 Phosphorus and Plant Growth Adequate

Lake Nutrient Classification Phosphorus Trophic State Lake Use Conc. (mg/L) Suitable for

Lower Boise River Phosphorus TMDL Lauri Monnot Idaho Department of Environmental Quality April

David Crawford Valley Craft Minimizing Phosphorus Discharge and Reducing Energy Use Valley

Machine Learning (CSE 446): Learning as Minimizing Loss; Least Squares Sham M Kakade c 2018

A Collaborative Strategy to Improve Water Management and Drainage to Reduce Phosphorus Loss in

Nutrient Monitoring Council 8th Meeting, March 14, 2017, Springfield, IL Nutrient Monitoring

Nutrient Monitoring Council 4th Meeting, April 5, 2016, Springfield, IL Nutrient Monitoring

Nutrient Monitoring Council 6th Meeting, September 13, 2016, Springfield, IL Nutrient Monitoring

Assessment of phosphorus loss risk from soil - a case study from Yuqiao reservoir local watershed

Machine Learning (CSE 446): Learning as Minimizing Loss: Regularization and Gradient Descent

Machine Learning (CSE 446): PCA (continued) and Learning as Minimizing Loss Sham M Kakade

at the Stic ickney Water Reclamation Pla lant January 29, 2019 Background Nutrient Standards

Black Phosphorus Field Effect Transistors Albert Liu Black Phosphorus Synthesis Process: Red

Update on Nutrient Reduction Efforts in Region 8 States Nutrient Work Group Meeting May 28, 2015

PHOSPHORUS TRADING &amp; WATER QUALITY ______________________ The Total Phosphorus Management

Valerian E. Kagan Valerian E. Kagan Macrophage Response to Single Walled Carbon Nanotubes:

CMS Management Presentation Listed on the Main Market of Constituent of MSCI Malaysia Bursa

QUANTIFICATION OF PHOSPHATE REMOVAL IN A CONSTRUCTED STORMWATER WETLAND AND A BIOINFILTRATION

Boise River Total Phosphorus Mass Balance Model Ben Cope EPA Region 10 Office of Environmental

Lake Hopatcong Past, Present and Future Fred S. Lubnow, Ph.D., Director of Aquatic Programs

Three Phosphorus TMDLs for the Atlantic Water Region Shark River and Metedeconk River North

Lower Catawba Basin Nutrient TMDL Update Stakeholder Meeting Rock Hill Operations Center, Rock

PHOSPHORUS TRADING & WATER QUALITY ______________________ The Total Phosphorus Management