▶ Watch: Impacts of Cereal Rye as a Cover Crop Depending on Farm Goals
The webinar speakers will share data that compares cover crop seeding rate to find what rate is needed for water quality and soil health benefits.
Nitrogen Leaching
▶ Watch: Finding the N Rate: Balancing Yield, Profitability, and Water Quality
Can we find a nitrogen rate that balances yield, profitability, and water quality?
Quantifying Nitrate Leaching from Agricultural Soils
There are several common ways to quantify nitrate leaching. Each method has different benefits and tradeoffs in terms of data accuracy, equipment needed, and time and labor requirements.
▶ Nitrogen Leaching: Trends, Risks and Regional Insights
Lindsey Hartfiel explores how nitrogen moves through soil and water systems, the impact of agricultural practices, and the importance of data-driven decision-making to mitigate nitrogen leaching.
▶ How Does Nitrate Leaching Respond to Nitrogen Inputs from Fertilizer and Manure?
Dr. Steven Hall, assistant professor and extension cropping systems and water quality specialist, explores how nitrate leaching responds to nitrogen inputs from both synthetic fertilizer and manure in Wisconsin cropping systems.
▶ Watch: Nitrogen Balance: Reevaluating Crop Rotations for Cleaner Water in Wisconsin
Dr. Steven Hall, Assistant Professor in the Department of Plant and Agroecosystem Sciences, and Guolong Liang, Agriculture Water Quality Outreach Specialist, discuss water quality impacts under different crop rotations in Wisconsin.
▶ Watch: Nitrate Leaching: Trends in the Midwest to Local Impacts in Wisconsin
Dr. Lindsey Hartfiel, Discovery Farms Research Program Manager, and Kelsey Hyland, Agriculture Water Quality Outreach Specialist, discuss nitrate leaching.
Manage nitrogen as a budget to reduce groundwater contamination
Nitrogen (N) is at the center of agronomy, climate change, and water quality conversations. Farms are striving to achieve higher yields and quality while reducing emissions and leaching losses by improving their nitrogen use efficiency.
▶Watch: Optimizing nitrogen use and reducing nitrate leaching
How do we optimize the use of commercial nitrogen and reduce nitrate leaching? Guolong Liang, agriculture water quality outreach specialist, and Monica Schauer, research director for NOPP, discuss the importance of nitrogen optimization and the strategies to reduce nitrate leaching. Learn about how agronomic results and water quality impacts connect with lessons from an on-farm trial from the Nitrogen Optimization Pilot Program (NOPP) from 2023.
How much nitrogen is in your irrigation water?
In this article, we will discuss the presence of nitrate in irrigation water and opportunities to budget nitrogen in irrigation, to make farms more efficient in using nitrogen and reduce over-fertilization which in turn will protect groundwater.
Weighing the impacts of tile drains on nutrient losses
The use of tile drainage is becoming more popular in Wisconsin. Installing a tile drain system can be a great tool to dry soil out faster, improving the timeliness of field operations throughout the cropping season. However, how do tile systems influence water movement off of the field, and what are the water quality implications?
▶ Watch: Nitrogen leaching in central sands: Regional & field-based estimation
”Nitrogen Leaching in Central Sands: Regional & Field-based Estimation.” This webinar had two speakers, Guolong Liang (outreach specialist in UW-Extension’s Ag water quality program) and Emily Marrs Heineman (graduate student within the Nelson Institute of Environmental Studies, UW-Madison).