Analysis of information sources in references of the Wikipedia article "Humus" in English language version.
"The latest edition of The Nature and Properties of Soils, published in 2016, cites Lehmann's 2015 paper and acknowledges that "our understanding of the nature and genesis of soil humus has advanced greatly since the turn of the century, requiring that some long-accepted concepts be revised or abandoned".
Soil researchers have concluded that even the largest, most complex molecules can be quickly devoured by soil's abundant and voracious microbes