Research and Extension
New in 2016 -- Agricultural Tile Drains Clogged With Cover Crop Roots?
Drainage and Water Quality
Flow and nitrate leaching into tile drains
have been monitored for 15 years at the Southeast Purdue Agricultural
Center (SEPAC) experimental drainage plots. That web site provides
information on the level of nitrate carried by tile drains and reductions
that can be achieved when crop management practices are changed.
Interpreting Nitrate Concentration in Tile Drainage Water (AY 318-W, 8 pages, pdf) provides general guidelines for interpreting measured NO3-N concentrations in drainflow samples collected through monitoring programs, and describes the most important factors influencing drainflow NO3-N concentrations.
Drainage Water Management
Drainage Water Management is a new practice in which water control structures are installed in the main drain lines to hold water back and allow farmers to drain only as needed.
· Drainage Water Management for the Midwest (WQ-44, 546 kB, pdf) This publication developed by researchers from 5 states answers questions about drainage water management for the Midwest.
· Narrated powerpoint overview of drainage water management (4 minutes, presented by Jane Frankenberger)
Purdue drainage water management research/demonstration project
Impacts of drainage water management on nitrate loss, soil quality, and farm profitability are being studied through paired-field trials on three private farms and a Purdue University farm. Drain flow and nitrate concentration are being monitored in each paired drainage water management
· Overview of Purdue project (narrated powerpoint, presented by Jane Frankenberger)
Drain Spacing and Yield
Recommendations for drainage depth and spacing in each soil type in Indiana based on years of experience and knowledge of soil properties can be found in the publication AY-300, Drainage Recommendations for Indiana Soils. See "Drainage and Wet Soil Management" for more information and to download it as a pdf file.
Data from Indiana research sites are summarized in "Drainage and Yield Studies" (actually part of a multi-state extension publication posted at the Ohio State University site).
Purdue Faculty with expertise in drainage
Department of Agronomy
Department of Agricultural and Biological Engineering
Jane Frankenberger (email@example.com)
For more information on this Web site, contact Jane Frankenberger (firstname.lastname@example.org)