Drainage Management Systems
In a recent study, Laura Christianson, assistant professor of water quality in the Department of Crop Sciences at the University of Illinois, and several colleagues looked at whether they could remove phosphorus in woodchip bioreactors by adding a special "P-filter" designed to trap the fertilizer-derived pollutant. The team tested two types of industrial waste products in the P-filters: acid mine drainage treatment residual (MDR) and steel slag.
A year after a plan to tackle residual phosphorus loss from farmland into the Thames River was developed, the Thames River Phosphorus Reduction Collaborative (TRPRC) is being put into action in Ontario. This is thanks to a grant from the Agricultural Adaptation Council through federal-provincial-territorial Growing Forward 2 funding programs, with matching contributions from participating organizations.
Since 2011, the majority of corn producers in Illinois have followed the recommended maximum return to nitrogen (MRN) application guidelines. More than half of all farmers are either knowledgeable or very knowledgeable about the “4R” strategy (right nutrient source at the right rate, in the right place and at the right time).
As more and more farmers, politicians and laypeople are coming to understand, nutrient run-off from farm fields into waterways is a very big deal.
With snow on the ground, crews late last year finished the first of many water-quality projects expected in the headwaters of Root River’s south branch in eastern Mower County, according to the Mower Soil & Water Conservation District (MSWCD). The MSWCD led construction of a two-basin terrace system to control water and sediment on a Clayton Township farm field as part of the second phase of the Root River Field to Stream Partnership led by the Minnesota Department of Agriculture. Work involved building two berms – each berm at least the length of two football fields – to hold and filter storm water running off about 20 acres of crop land. With the basins, sediment and phosphorus losses are expected to be reduced by more than 50 per cent from the 20-acre field, said Kevin Kuehner, project lead with the Minnesota Department of Agriculture (MDA). Six other basins could be built in the next two years in the 2,800-acre watershed study area in Mower County along with thousands of feet of grass waterways planned for this year’s planting season. Started in 2009, Field to Stream uses innovative equipment and technology to monitor sediment and nutrient runoff from farm fields and to study streams receiving storm water. Information collected during the project’s initial six-year phase provided farmers with baseline data to better understand the effects of their existing conservation practices. Farmers learned when soil and nutrient losses were happening and how much was leaving their field to enter nearby waterways. Monitoring continues at these sites as the second phase begins. | READ MORE
Green Aero Tech uses high-tech drones with topographical accuracy to find areas that require drainage. A web interface allows users to switch between elevation, drainage and visible maps. While the company can provide a drainage plan, a prescription map must be provided by a qualified drainage contractor. | READ MORE
The Transforming Drainage project is capitalizing on the network established during our first year with new research to advance our understanding of drainage water storage systems (e.g. controlled drainage, saturated buffers, and drainage water recycling), foundations for innovative tools, and continued outreach to stakeholders across the Midwest.
Patience is wearing thin in some communities because of water quality problems linked to the loss of crop nutrients from agricultural land and other sources. The city of Des Moines, IA, is moving ahead with a lawsuit against three of the state’s highly agricultural counties that manage drainage districts traced to high concentrations of nitrates in the Raccoon River, a major source of drinking water for the city.
There are concerns about how subsurface impacts water quality, movement and distribution. In the Red River Valley – a region that includes North Dakota, Minnesota and Manitoba – landowners, along with local, state and federal government agencies, agricultural businesses and the University of Minnesota, are working together to tackle these concerns.
Tile drainage is accused of increasing downstream peak flows, causing flooding, moving soil and sediment and making it easy for nutrients to move. Imagine a tile drainage system with no surface inlets. Research has shown it does not increase downstream peak flows; flooding is not increased. The existence of tile drainage encourages infiltration, which reduces overland flow. The reduced overland flow reduces the amount of sediment (topsoil) movement. Recent research suggests there is less phosphorus movement through the tile.
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Port Industries Field Day
July 27, 2018
Empire Farm Days
August 7-9, 2018
The International Commission on Irrigation and Drainage 2018 Conference
August 12-17, 2018
Iowa Drainage School
August 21-23, 2018