Houlbrooke (2010) Matching farm dairy effluent storage requirements and management practices to soil and landscape features [pdf, 1.2 MB]
...2010 4.2.2 Soils in the Waikato region that exhibit preferential flow In this section we restrict our analysis to land likely to receive irrigated FDE. Irrigable land is considered to be land on slopes <15° and, within the New Zealand Land Resource Inventory (NZLRI), has vegetation codes for pasture or exotic forest. Exotic forest is included to capture areas of land, generally in the south of the region, which may be converted from forestry to dairying. The ratings for prefere...