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Heavy soils, with low rates of soil-water movement, such as those found in the South-West Irrigation Area (SWIA), require closely spaced (2-6 m apart) subsoil drainage systems to provide sufficient water movement to control the effects of salt-waterlogging on pastures. Such close spacing using traditional buried pipe or tile drainage systems is impractical. As a result, mole drainage systems, used in other parts of the world for over 50 years, have gained popularity in the SWIA in recent years.
This Bulletin Farmnote reports the current ‘best-bet’ mole draining technique for SWIA conditions gathered from observations over a number of years from several mole drainage systems installed by Agriculture WA and members of the Dardanup and Wellesley LCDCs.
Number of Pages
Mole drainage, Design, Clay soils, Farm machinery, Soil types, Drainage Systems, South West Irrigation Area (W.A.), Western Australia
Bioresource and Agricultural Engineering | Environmental Engineering | Soil Science
Bennett, D L, George, R, and Russell, B. (2005), Mole drainage for increased productivity in the south west irrigation area. Department of Primary Industries and Regional Development, Western Australia, Perth. Bulletin 4610.
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