Soil acidity is an economic and natural resource threat throughout the Western Australian Wheatbelt. Production loss and sustainability are of major concern to farmers, with more than 14.25 million hectares of Wheatbelt soils currently estimated to be acidic or at risk of becoming acidic to the point of restricting production. Estimates of production loss for the Wheatbelt due to acidity range from $300–400 million, or about 10 per cent of the annual crop.

salinity; topsoil; groundwater