Table 4.5 Soil organic carbon (t/ha) for various soils, rainfall zones and land uses in WA. Horticulture Horticulture compost compost Horticulture Soil Rainfall Native Plantation Annual Perennial Continuous Mixed chemical 7 yrs x 7 yrs x Location type zone forest ex-pasture pasture pasture cropping farming Dairy fert. 30m3/ha 60m3/ha Various High 611 781 785 615 255 365 No data No data No data WA1,5 Esperance Deep High No No data 40 46 (76) No data No data No No data No data No data sandplain2 sand data (100) data Esperance Shallow High No No data 48 43 No data No data No No data No data No data sandplain2 duplex data (100) data Albany3 Deep Low No No data No data No data 29 (40) 39 (50) No No data No data No data sand data data Albany3 Deep High No No data 61 (55) 93 (77) No data No data No No data No data No data sand data data Albany3 Duplex High No No data 83 91 No data No data No No data No data No data data data Medina4 Deep High No No data No data No data No data No data No 11 15 18 sand data data Values in brackets are percentage of attainable SOC achieved. Source: 1 Mendham et al. (2003) calculated to 1m depth; 2 Carson et al. (2012) calculated to 0.3m depth; 3 Soilquality.org.au (2012) calculated to 0.3m depth; 4 Paulin and O’Malley (2008) calculated to 0.15m depth; 5 Murphy et al. (2013) calculated to 0.3m depth.
Table 4.5 Soil organic carbon (t/ha) for various soils, rainfall zones and land uses in WA. Location Soil type Rainfall zone Native forest Plantation ex-pasture Annual pasture Perennial pasture Continuous cropping Mixed farming Dairy Horticulture chemical fert. Horticulture compost 7 yrs x 30m3/ha Horticulture compost 7 yrs x 60m3/ha WA1,5 Various High 611 781 785 615 255 365 No data No data No data Esperance sandplain2 Deep sand High No data No data 40 (100) 46 (76) No data No data No data No data No data No data Esperance sandplain2 Shallow duplex High No data No data 48 (100) 43 No data No data No data No data No data No data Albany3 Deep sand Low No data No data No data No data 29 (40) 39 (50) No data No data No data No data Albany3 Deep sand High No data No data 61 (55) 93 (77) No data No data No data No data No data No data Albany3 Duplex High No data No data 83 91 No data No data No data No data No data No data Medina4 Deep sand High No data No data No data No data No data No data No data 11 15 18 Values in brackets are percentage of attainable SOC achieved. Source: 1 Mendham et al. (2003) calculated to 1m depth; 2 Carson et al. (2012) calculated to 0.3m depth; 3 Soilquality.org.au (2012) calculated to 0.3m depth; 4 Paulin and O’Malley (2008) calculated to 0.15m depth; 5 Murphy et al. (2013) calculated to 0.3m depth.