Today we’re talking all about fall application. What's the first thing farmers should know about applying in fall? What’s the difference in N efficiency at 50 the degree threshold versus even a 55 degree threshold, and then when have those degree dates happened historically?

Guests:

• Brad Carlson, Extension educator (Mankato)
• Daniel Kaiser, Extension nutrient management specialist (St. Paul)

Additional resources:

• Minnesota Department of Agriculture Soil Temperature Network
• Southern Research and Outreach Center (Waseca, MN) temperature chart
• Advanced Nitrogen Smart: A deep dive into the 4 Rs

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For the latest nutrient management information, subscribe to the Nutrient Management Podcast. And don't forget to subscribe to the Minnesota Crop News daily or weekly email newsletter, subscribe to our YouTube channel, like UMN Extension Nutrient Management on Facebook, follow us on X (formerly twitter), and visit our website.

If you have questions or comments, please email us at nutmgmt@umn.edu.

Advancing Nitrogen Smart is proud to be supported by the farm families of Minnesota and their corn check-off investment through Minnesota Corn.

In this episode of the Nutrient Management Podcast, our panelists discuss liming in detail. What kind of variation is there in liming recommendations? Since pH changes aren’t instant, when is the best time to apply limestone? Is lime application economically justified, and in what circumstances? What should growers know about selecting liming materials? What other bits of advice do our panelists recommend?

Guests:

• John Jones, Soil Fertility, plant nutrition, and nutrient management research, University of Illinois Urbana-Champaign, (Urbana-Champaign, Il)
• Jeff Vetsch, U of M researcher (Waseca)
• Daniel Kaiser, Extension nutrient management specialist (St. Paul)
• Carl Rosen, Extension nutrient management specialist (St. Paul)

Additional resources:

• Liming
• Lime needs in Minnesota
• Fertilizer Recommendation Support Tool (FRST)

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For the latest nutrient management information, subscribe to the Nutrient Management Podcast wherever you listen and never miss an episode. And don't forget to subscribe to the Minnesota Crop News daily or weekly email newsletter, and to our YouTube channel. Be sure to like UMN Extension Nutrient Management on Facebook, follow us on X (formerly Twitter), and of course visit our website.

If you have questions or comments, please email us at nutmgmt@umn.edu.

Support for the Nutrient Management Podcast is provided by Minnesota's fertilizer tonnage fee through the Agricultural Fertilizer Research & Education Council (AFREC). Learn more at MNsoilfertility.com.

In this episode of Advancing Nitrogen Smart, Melissa Wilson, Extension manure management specialist joins Brad Carlson to discuss fall manure application. What are the most important dos and don'ts of fall application? How much time can nitrification inhibitors buy you after application? What's the optimum soil temperature for application, and what if you can't wait? What are characteristics of manure from different sources, and how can they work to your advantage?

Guests:

• Brad Carlson, Extension educator (Mankato)
• Melissa Wilson, Extension manure management specialist (St. Paul)

Additional resources:

• Nitrogen availability of different manure types: What we know and what we are researching
• Tips for fall manure application and how to avoid nutrient loss
• Nitrification inhibitors and manure: Do they work?
• Introducing ManureDB: A new way to view manure variability and trends
• Everything manure: Midwest experts answer common questions heading into fall

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For the latest nutrient management information, subscribe to the Nutrient Management Podcast. And don't forget to subscribe to the Minnesota Crop News daily or weekly email newsletter, subscribe to our YouTube channel, like UMN Extension Nutrient Management on Facebook, follow us on X (formerly twitter), and visit our website.

If you have questions or comments, please email us at nutmgmt@umn.edu.

Advancing Nitrogen Smart is proud to be supported by the farm families of Minnesota and their corn check-off investment through Minnesota Corn.

In this episode of the Advancing Nitrogen Smart series, we discuss probably the most important topic for many farmers - rate. What makes both over-application and under-application of nitrogen counter-productive in terms of yield? How does a Maximum Return To Nitrogen (MRTN) rate approach differ from a yield-based approach? What are long-term environmental consequences of over-application, and how does this relate to a farmer's operation? What are some ways to address in-field variability when determining rate?

Guests:

• Brad Carlson, Extension educator (Mankato)
• Daniel Kaiser, Extension nutrient management specialist (St. Paul)

Additional resources:

• Maximum Return To Nitrogen (MRTN) rate calculator
• Are you overspending on fertilizer?
• Best practices for nitrogen management
• Nitrogen Smart (online course)

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For the latest nutrient management information, subscribe to the Nutrient Management Podcast. And don't forget to subscribe to the Minnesota Crop News daily or weekly email newsletter, subscribe to our YouTube channel, like UMN Extension Nutrient Management on Facebook, follow us on X (formerly twitter), and visit our website.

If you have questions or comments, please email us at nutmgmt@umn.edu.

Advancing Nitrogen Smart is proud to be supported by the farm families of Minnesota and their corn check-off investment through Minnesota Corn.

This episode of the Nutrient Management Podcast is our annual fall fertilizer outlook. After such a challenging growing season throughout most of the state, how do things look headed toward harvest? Since most of the state went from being too dry last year to too wet this year, how should this affect the approach to fertility management? What role will fertility play in sound financial management this fall? What advice do our panelists give growers as we head into the fall?

Guests:

• Daniel Kaiser, Extension nutrient management specialist (St. Paul)
• Brad Carlson, Extension educator (Mankato)
• Jeff Vetsch, U of M researcher (Waseca)
• Fabian Fernandez, Extension nutrient management specialist (St. Paul)

Additional resources:

• Are you overspending on fertilizer?
• 2024 Certified Soil Testing Laboratories
• Nitrogen Fertilizer BMPs for Agricultural Lands

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For the latest nutrient management information, subscribe to the Nutrient Management Podcast and never miss an episode. And don't forget to subscribe to the Minnesota Crop News daily or weekly email newsletter, and to our YouTube channel. Be sure to like UMN Extension Nutrient Management on Facebook, follow us on X (formerly Twitter), and of course visit our website.

We want to hear from you. If you have questions or comments, please email us at nutmgmt@umn.edu.

Support for the Nutrient Management Podcast is provided by Minnesota's fertilizer tonnage fee through the Agricultural Fertilizer Research & Education Council (AFREC). Learn more at MNsoilfertility.com.

In the 8th episode of the Advancing Nitrogen Smart series, we’re taking about timing. What makes understanding timing crucial to using nitrogen efficiently? Should growers apply in fall, and if so, what source should be avoided? Between which growth stages does corn take up the bulk of a field's N? What do weather extremes teach us about optimal timing? Do some timing decisions negatively affect farmers' finances? In what ways?

Guests:

• Brad Carlson, Extension educator (Mankato)
• Daniel Kaiser, Extension nutrient management specialist (St. Paul)

Additional resources:

• Understanding nitrogen in soils
• Nitrogen Fertilizer BMPs for Agricultural Lands
• Does fall urea application reduce sugarbeet stand loss?

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For the latest nutrient management information, subscribe to the Nutrient Management Podcast. And don't forget to subscribe to the Minnesota Crop News daily or weekly email newsletter, subscribe to our YouTube channel, like UMN Extension Nutrient Management on Facebook, follow us on X (formerly Twitter), and visit our website.

If you have questions or comments, please email us at nutmgmt@umn.edu.

Advancing Nitrogen Smart is proud to be supported by the farm families of Minnesota and their corn check-off investment through Minnesota Corn.

In this episode of the Advancing Nitrogen Smart series, our two experts discuss nitrogen pools. What are nitrogen pools, and where do we find them? How is N actually consumed by the plant, and what forms of N will plants take up more readily? What are some potential signs of N deficiency in the plant? How do nitrogen pools relate back to the 4R's, like timing?

Guests:

• Brad Carlson, Extension educator (Mankato)
• Daniel Kaiser, Extension nutrient management specialist (St. Paul)

Additional resources:

• Will soil microbes deliver nitrogen to my crop? Yes, but not in a predictable way
• Nitrogen
• Understanding nitrogen in soils

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For the latest nutrient management information, subscribe to the Nutrient Management Podcast. And don't forget to subscribe to the Minnesota Crop News daily or weekly email newsletter, subscribe to our YouTube channel, like UMN Extension Nutrient Management on Facebook, follow us on X (formerly Twitter), and visit our website.

If you have questions or comments, please email us at nutmgmt@umn.edu.

Advancing Nitrogen Smart is proud to be supported by the farm families of Minnesota and their corn check-off investment through Minnesota Corn.

In this episode of the Nutrient Management Podcast, we’re talking about phosphorus fertilizer guidelines throughout Minnesota and the Midwest. What are current state guidelines throughout the region, and are they satisfactory? Should farmers forgo taking a soil test to measure their P levels, or should the test be prioritized? Might state phosphorus guidelines need to be revised, and if so, in what ways? What guidance or advice pertaining to phosphorus guidelines would our panelists tell growers?

Guests:

• Daniel Kaiser, Extension nutrient management specialist (St. Paul)
• Antonio P. Mallarino, Professor emeritus, nutrient management, Iowa State University (Ames, IA)
• John Jones, Soil Fertility, plant nutrition, and nutrient management research, University of Illinois Urbana-Champaign, (Urbana-Champaign, Il)
• Dorivar Ruiz Diaz, KSU Professor, Soil fertility and nutrient management, Kansas State University (Manhattan, KS)

Additional resources:

• Phosphorus and potassium
• Understanding phosphorus fertilizers
• What is the best soil test option for phosphorus?
• Fall vs. Spring: When to apply phosphorus?

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For the latest nutrient management information, subscribe to the Nutrient Management Podcast here and never miss an episode. And don't forget to subscribe to the Minnesota Crop News daily or weekly email newsletter, and to our YouTube channel. Be sure to like UMN Extension Nutrient Management on Facebook, follow us on X, and of course visit our website.

If you have questions or comments, please email us at nutmgmt@umn.edu.

Support for the Nutrient Management Podcast is provided by Minnesota's fertilizer tonnage fee through the Agricultural Fertilizer Research & Education Council (AFREC). Learn more at MNsoilfertility.com.