Throughout the top 100 cm of the soil profile after two decadesof K application (Table 8), the K225 treatment significantly(P<0.05) increased soil exchangeable K in comparison with theother treatments, while soil exchangeable K in the K113 treatmentwas similar to that in the control. Potassium application did notsignificantly (P > 0.05) increase soil non-exchangeable K or total K.
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