Western Australia (South-West), potassium deficiency, potash, fertilisers.
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Insofar as potassium is concerned, dairying in the South-West part of the State is a rather exhaustive type of farming. In the main, this is due to the necessity for cutting hay and removing it from the paddocks on which it was grown. The potassium in a two-ton crop of clover hay is at least equal to that in 90 lb. of potash fertiliser and is often much more.
Dunne, T. C.
"Potash for pastures.,"
Journal of the Department of Agriculture, Western Australia, Series 3: Vol. 4
, Article 15.
Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture3/vol4/iss5/15