The given data on phosphorus concentration in topsoil for four different soil treatments appeared in the article “Fertilisers for Lotus and Clover Establishments on a Sequence of Acid Soils on the East Otago Uplands” (New Zealand Journal of Experimental Agriculture [1984]: 119–129). Use the KW test and a .01 significance level to test the null hypothesis of no difference in true mean phosphorus concentration for the four soil treatments.
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