The story below features the Conservation Tillage and Technology Conference taking place in March. It is funded, in part, by NCR-SARE.

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Source: porkNETWORK (http://www.porknetwork.com/pork-news/latest/New-drainage-ditch-management-approaches-benefit-growers-139879193.html))

Innovative approaches to ditch management could save Ohio grain farmers time and money while reducing the flow of phosphorus and nitrogen through ditches that lead to streams, rivers, and ultimately Lake Erie and beyond, Ohio State University experts say.

Over the past decade there has been increasing interest in managing drainage ditches not only to provide adequate drainage, but also to increase their stability, reduce the need for regular ditch maintenance and to provide conservation benefits, said Jon Witter, an assistant professor in Ohio State's College of Food, Agricultural, and Environmental Sciences.

While traditional drainage ditches are designed using a trapezoidal cross-section to drain agricultural lands and move water downstream, these ditches lack floodplains and can experience bank erosion and excessive sediment buildup, he said.

"These alternative ditch designs can be considered one type of in-stream best management practice," he said. "And, if properly designed, they also have the potential to create and maintain better habitat and water quality conditions for the waters into which our drains flow into, such as the Gulf of Mexico or Lake Erie."

On March 6, Witter will join Rafiq Islam, who holds joint appointments with Ohio State University Extension and the Ohio Agricultural Research and Development Center, to discuss phosphorus research they and their Ohio State and Ohio Department of Natural Resources colleagues have conducted.

The workshop is part of the Conservation Tillage and Technology Conference and is funded by North-Central Sustainable Agricultural Research and Education. It begins at 3:50 p.m. and will offer strategies for growers to manage drainage ditches to remove phosphorus.

Witter and Islam's research includes working on new procedures to fractionate total soil phosphorus into six to seven different parts, and measuring their transformations, solubility and availability related to water pollution, he said.

Among the workshop topics, Islam said, will be how phosphorous transforms from an insoluble form to a soluble form, and vice-versa, in ditches; how drainage ditches trap sediments and phosphorus from agricultural fields after flooding or rain; and how sediments and phosphorus can be immobilized to cut down on algae pollution in water.

The Conservation Tillage and Technology Conference is sponsored by OSU Extension, OARDC, Northwest Ohio Soil and Water Conservation Districts, the U.S. Department of Agriculture's Natural Resources Conservation Service, and the Ohio No-Till Council.

The full schedule and registration information can be found at http://ctc.osu.edu . Participants may register online or by mail. Registration for the full conference is $80 (or $60 for one day) if received by Feb. 24. Information is also available in county offices of OSU Extension.