A Rapid Method for the Determination of Total Potassium in Soils

O. M. Shedd
1909 Journal of Industrial & Engineering Chemistry  
change in the mineral constituents of the grain or in the total nitrogen, the weight per bushel and the weight per 1000 kernels remaining practically constant.
doi:10.1021/ie50005a006 fatcat:p3nf74ij3zcb7mxklokoblrlay