Summary
The acid permanganate method proposed as a chemical index of soil nitrogen (N) availability simply measures the mineralizable N. A modification of the method has been proposed that allows the estimation of soil mineral N simultaneously. The N values obtained by the modified method correlated highly significantly with the mineral N of incubation test (r=0.80,P<0.01) and plant uptake (r=0.69,P<0.01).
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Hussain, F., Malik, K.A. Modification of the acid permanganate method for obtaining an index of soil nitrogen availability. Plant Soil 84, 143–146 (1985). https://doi.org/10.1007/BF02197877
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DOI: https://doi.org/10.1007/BF02197877