In the second of a two part series on drainage, Michael Hennessy continues his discussion with Pat Tuohy, a researcher in Teagasc dealing with soil hydrology and drainage, to talk about field drainage issues on tillage farms.
Pat discusses how it is important to identify the sub-surface layer to a depth of 2.5m. This layer will dictate how the overall area should be drained. Where the layer is generally impermeable to water (like grey marl), shallower and more frequent drains will be needed.
However where there is evidence of water movement at depth deeper drains are more suitable.
For more information on drainage go to:
https://www.teagasc.ie/media/website/environment/soil/Teagasc_Drainage_Manual_2022.pdf
For more episodes and information from the Tillage Edge podcast go to:
https://www.teagasc.ie/crops/crops/the-tillage-edge-podcast/
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