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Nutrient Management Topics

33rd Integrated Crop Management Conference

Printable conference program

  • 21. Precision nitrogen technologies for corn production (1.0 NM)

    Laila Puntel, assistant professor, Agronomy and Horticulture, University of Nebraska, Lincoln, NE

    Precision and digital agriculture technologies for site-specific nitrogen (N) management have been demonstrated to improve nitrogen use efficiency (NUE). However, adoption of these technologies remains low. To promote adoption, we first evaluated the impact of commercially available crop model and remote sensing-based N tools on yield, NUE and profit. Second, we compared the next level of N management against grower’s typical N management and the observed economic optimal N rate (EONR). The performance of precision N tools will be discussed in this presentation.
    Session E - Wednesday, 1:00 PM - 1:50 PM
    Session F - Wednesday, 2:00 PM - 2:50 PM

  • 22. The Iowa Nitrogen Initiative (1.0 NM)

    Michael Castellano, professor, Agronomy, Iowa State University, Ames, IA; Melissa Miller, associate director, Iowa Nitrogen Initiative

    Learn how you can optimize nitrogen use for your operation. The Iowa Nitrogen Initiative (INI) is a new and unique public-private partnership that will generate the best nitrogen science in the world to benefit productivity, profitability and environmental performance. Collaborating with Iowa farmers, INI will use the latest advances in precision agriculture to conduct 100s of scientifically robust on-farm nitrogen fertilizer experiments every year. Data from these experiments will allow Iowa State University scientists and engineers to use the latest advances in super computing and quantitative modeling to develop new understanding and decision support tools that enable continuous improvement in resource use efficiency.
    Session G - Wednesday, 3:10 PM - 4:00 PM
    Session H - Wednesday, 4:10 PM - 5:00 PM

  • 23. Recent phosphorus and potassium research warrants some important changes to current guidelines (1.0 NM)

    Antonio Mallarino, professor and extension soil fertility specialist, Agronomy, Iowa State University, Ames, IA

    Phosphorus and potassium research since 2013, when ISU soil-test interpretations and fertilization guidelines for corn and soybean were updated, confirmed some management suggestions but justifies some important changes. More than 200 trials with corn and soybean field-response trials for each nutrient were conducted since 2013. The presentation will share results and discuss planned changes for next year.
    Session I - Thursday, 8:00 AM - 8:50 AM
    Session J - Thursday, 9:00 AM - 9:50 AM

  • 24. You can’t afford too low soil pH: Use aglime, pelleted lime, and other sources effectively (1.0 NM)

    Antonio Mallarino, professor and extension soil fertility specialist, Agronomy, Iowa State University, Ames, IA

    Lime tends to be an overlooked input for corn production compared with the major nutrients. Strong soil acidity seriously limit crop yield and benefits from crop production. The presentation will review recent research results on use of aglime and pelleted lime for corn and soybean that should demonstrate cost-effective management practices.
    Session M - Thursday, 1:00 PM - 1:50 PM
    Session N - Thursday, 2:00 PM - 2:50 PM

  • 25. The major causes of record-high fertilizer prices (0.5 NM)

    Oranuch Wongpiyabovorn, graduate research assistant, Economics, Iowa State University, Ames, IA

    Farmers are paying very high nitrogen fertilizer prices right now, mainly because of surging natural gas prices. This presentation will review what happened in the U.S nitrogen fertilizer industry in the past, what is happening now, and what may happen in the future.
    Session C - Wednesday, 11:00 AM - 11:25 AM
    Session D - Wednesday, 11:35 AM - 12:00 PM

  • 26. Lions, tigers, and bears, oh my! Carbon markets and greenhouse gasses from livestock agriculture (1.0 NM)

    Daniel Andersen, associate professor, Agricultural and Biosystems Engineering, Iowa State University, Ames, IA

    Carbon markets are changing value propositions in agriculture. Nowhere is this truer than in our decisions about how our manure is managed and utilized. We’ll look at different manure management strategies, including solid-liquid separation, acidification, aeration, application timing, and anaerobic digestion, to show the various carbon benefits and evaluate practice economic achievability. We’ll look at how each practice impacts affect manure’s use for crop production.
    Session K - Thursday, 10:10 AM - 11:00 AM
    Session L - Thursday, 11:10 AM - 12:00 PM