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The objectives of the study are to provide on-farm demonstrations of controlled drainage and sub-irrigation systems, and to determine their effect on crop yields and environmental benefits. It compares the nitrate concentration, water loss and crop yields of controlled drainage with free outlet tile drainage.
TAN, C.S. ; DRURY, C.F. ; NG, H.Y.F. ; GAYNOR, J.D. (1999): Effect of Controlled Drainage and Subirrigation on Subsurface Tile Drainage Nitrate Loss and Crop Yield at the Farm Scale. In: Canadian Water Resources Journal : Volume 24 , 177. URL [Accessed: 09.07.2019]