Healthy soil is rich in organic matter, but scientists have yet to fully understand exactly how that organic matter is formed. Now a team of University of New Hampshire scientists have uncovered evidence that microbial pathways – not plants – are the chief originator of the organic matter found in stable soil carbon pools.
https://colsa.unh.edu/nhaes/article/2016/12/soilorganicmatter#.WEV8FqJTAQQ.twitter