7 Zone of Rejuvenated The higher rainfall western Poor Deteriorating Limited evidence Limited evidence Drainage portion of the zone has water or limited or limited repellence in sandy gravelly consensus consensus areas. 8 Southern Wheatbelt Majority of low rainfall areas Fair Stable Limited evidence Limited evidence have no problems. There are or limited or limited some problems on grey consensus consensus sands in the south of the zone. 9 Stirlings to Similar to South Coast, but Poor Stable Limited evidence Limited evidence Ravensthorpe the shallow nature of sandy or limited or limited topsoils allows water to stay consensus consensus in the root zone. 10 South Coast Albany Large areas of grey sands Very poor Stable Adequate Limited evidence – to Esperance (deep and duplex) present evidence or limited water repellence problems and high level of consensus when cropped. Perennial consensus pastures overcome these constraints. 11 Salmon Gums Mallee The heavier and often Good Stable Limited evidence Limited evidence calcareous soils have no or limited or limited problems, but sandy surfaced consensus consensus soils may have water repellence problems. Condition grades Very good Water repellence uncommon/absent Good Water repellence of minor abundence Fair Water repellence of low abundence Poor Water repellence common Very poor Water repellence widespread
7 Zone of Rejuvenated Drainage The higher rainfall western portion of the zone has water repellence in sandy gravelly areas. Poor Deteriorating Limited evidence or limited consensus Limited evidence or limited consensus 8 Southern Wheatbelt Majority of low rainfall areas have no problems. There are some problems on grey sands in the south of the zone. Fair Stable Limited evidence or limited consensus Limited evidence or limited consensus 9 Stirlings to Ravensthorpe Similar to South Coast, but the shallow nature of sandy topsoils allows water to stay in the root zone. Poor Stable Limited evidence or limited consensus Limited evidence or limited consensus 10 South Coast – Albany to Esperance Large areas of grey sands (deep and duplex) present water repellence problems when cropped. Perennial pastures overcome these constraints. Very poor Stable Adequate evidence and high level of consensus Limited evidence or limited consensus 11 Salmon Gums Mallee The heavier and often calcareous soils have no problems, but sandy surfaced soils may have water repellence problems. Good Stable Limited evidence or limited consensus Limited evidence or limited consensus Condition grades Very good Water repellence uncommon/absent Good Water repellence of minor abundence Fair Water repellence of low abundence Poor Water repellence common Very poor Water repellence widespread
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