Water erosion, Western Australia
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Much wheatbelt agriculture is based on thin topsoils which are inherently infertile by world standards. Erosion even to the depth of cultivation will cause the loss of:—
• most of the original topsoil
• the phosphate build up from years of "super" applications
• any accumulation of organic matter and humus.
Department of Agriculture, Western Australia
"Soil erosion by water in W.A. cropland : a serious and widespread problem,"
Journal of the Department of Agriculture, Western Australia, Series 4: Vol. 5:
5, Article 6.
Available at: https://library.dpird.wa.gov.au/journal_agriculture4/vol5/iss5/6