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In 1979, a portion of the research farm was pattern tiled to provide a good soil environment for large tillage trial plots. This was used as an opportunity to compare tile installation methods; a conventional trenching machine (used widely prior to the late 70s) and a trenchless "tile plow" machine. The tile plow inserted plastic tile using a mole approach, which remains to be the primary tiling method after the late 1970s for field drainage. Past research on this study has shown that plow anddoi:10.31274/farmprogressreports-180814-838 fatcat:zlxn3rvtmrcvtgenpzvk5zjrmu