Synergies among soil organic compounds, microbiome and carbon amendments from ten years of stover retention and cover crops

Soil samples were taken from two corn systems at the GLBRC Biofuels Cropping System Experiment: continuous corn (Zea mays) (G1) and continuous corn + rye cover crop (Secale cereal) (G2). For each replicate in G1 system, the corn stover in main plot was removed after harvest (denoted as Control), and in the subplot the corn stover was left in the field (denoted as CS). For the rye covered G2 system, the corn stover was removed in the main plot (denoted as CC). All of the stover was left in the subplot (denoted as CSCC).