Available Potassium

by Atomic Absorption Spectrometer

Available Potassium is extracted by shaking 1 gram of air dried soil in 10mL of 1 M NH4OAc for 5 min. The sample is then filtered, and the filtrate is analyzed by atomic emission in a Perkin Elmer Analyst 100 spectrometer.

(See Method Reference No. 65)

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