Nutrient Management Topics

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  • 2. Nitrogen use with integrating cereal rye production into a soybean-corn system (1 NM)

    John Sawyer, professor and extension soil fertility specialist, Agronomy, Iowa State University, Ames, IA
    Wednesday, December 2, 2020 at 9:00 AM - 10:00 AM CST
    Diverse cropping systems are important for high crop yields and reducing impacts on water quality. Cereal rye as a cover crop is an important in-field practice for reducing nitrate loss to surface water systems. When implemented on many acres in Iowa, rye seed demand could result in a viable alternative cash grain crop within the soybean-corn system. As rye is a cereal crop, understanding nitrogen input and response will be necessary for optimal rye productivity, as well as rye impacts to corn in the rotation.

  • 6. Value of sidedressed fluid potassium fertilizer to complement preplant fertilization in corn-soybean rotations (1 NM)

    Antonio Mallarino, professor and extension soil fertility specialist, Agronomy, Iowa State University, Ames, IA
    Wednesday, December 9, 2020 at 9:00 AM - 10:00 AM CST
    Nitrogen sidedressing for corn is a common practice. In spite of much Iowa research on potassium preplant fertilizer placement methods and starter for corn and soybean, no research has focused on fluid potassium sidedressing. The presentation will share results of twelve trials conducted over three years to study the role of fluid potassium sidedressing for corn-soybean rotations for different preplant fertilization rates.

  • 14. Role of tissue testing and foliar fertilization to improve micronutrients and macronutrients soybean nutrition in Iowa (1 NM)

    Antonio Mallarino, professor and extension soil fertility specialist, Agronomy, Iowa State University, Ames, IA
    Wednesday, December 23, 2020 at 9:00 AM - 10:00 AM CST
    Given currently unfavorable crop grain prices, many producers are looking for ways to reduce fertilization costs. There is especial interest on foliar fertilization as a potential way to reduce or complement preplant fertilization for soybean. The presentation will show results of numerous Iowa trials to study the value of tissue testing and foliar fertilization for several nutrients in soybean.

  • 18. Making the most of your manure nutrients (1 NM)

    Brian Dougherty, extension agricultural engineering field specialist, Iowa State University Extension and Outreach, Dubuque, IA
    Wednesday, December 30, 2020 at 9:00 AM - 10:00 AM CST
    This webinar will provide information to help you maximize the value of liquid manure as a nutrient source for crops. Tips on manure application strategies, equipment maintenance, and using cover crops will be shared. Results from research on manure application timing, cover crop nutrient uptake, and nitrification inhibitors will be presented, including water quality and yield data.

  • 22. Nitrogen management research and the Minnesota Groundwater Protection Rule (1 NM)

    Fabián Fernández, associate professor, Soil, Water and Climate, University of Minnesota, St Paul, MN
    Wednesday, January 6, 2021 at 9:00 AM - 10:00 AM CST
    Managing nitrogen with skill and using the best possible information available from scientific research are key for profitable, sustainable, and environmentally responsible agriculture production. Yet, it is often difficult to know what combination of placement, nitrogen source, rate, and time of application is best for every field situation. We will discuss these challenges and what they might mean to you and to your northern neighbors farming under the new Minnesota Groundwater Protection Rule.