Agri-View article highlights research on nitrogen use efficiency

A recent article in Agri-View highlights key research findings on nitrogen crediting from cover crops, use of polymer-coated and nitrification inhibitors, and managing nitrogen on tile drained land. Research was presented at the 2013 Soil, Water, and Nutrient Management Meetings and presentations will be made available shortly.

Full article can be found here.

Nitrogen efficiency: Products, cover crops can improve system

Nitrogen efficiency Products, cover crops can improve system
February 19, 2014 8:30 am  •  Jane Fyksen Crops Editor

Efficient use of nitrogen in corn production makes sense.

That was evident from the big audience UW-Madison soil scientist Matt Ruark had at Corn-Soy Expo in Wisconsin Dells when he addressed the topic, including use of controlled release fertilizers and nitrogen stabilizers and cover crops that supply nitrogen to the next crop.

Noting that nitrogen use efficiency has been on a steady climb upward since the mid-1970s, Ruark still thinks growers should be tracking their nitrogen use efficiency by simply dividing grain produced by nitrogen applied, field-to-field and year-to-year.

The number goes up if yield increases with the same nitrogen rate, yield is maintained with less nitrogen, or best yet, yield goes up with less nitrogen.

Full article can be found here.

2009 Area Soil, Water & Nutrient Management Meetings

The 2009 Area Soil, Water & Nutrient Management Meetings are underway! This year’s topics include:

  • Soil mapping in Karst topography
  • Wisconsin nutrient management update (DATCP)
  • What you need to know about gypsum
  • Nitrogen and soybean: application to and credit from
  • The “Big Laboski” Hour – research updates from Dr. Laboski’s research program

For more info on the Area Meetings click here

Journal of Environmental Quality publication

Matt Ruark’s research paper, “Dissolved organic carbon losses from tile drained agroecosystems” appears in the May edition of the Journal of Environmental Quality.  This research quantifies dissolved organic carbon (DOC) losses from tile drains and evaluates the relationship between drainflow and DOC concentration. DOC is typically underrepresented in landscape level carbon budgets. Results from this research indicate that tile drains can account for a large percentage of watershed level DOC flux.