agroc - 2/27/2015 10:23. And here is the interesting part, he said the corn roots will increase the organic matter faster than the stover will. Yes, 75% of SOM comes from ROOTS! Not the stover / residue. Our resident Joel Gruver has mentioned this many times. I'm sure that includes mostly the grasses not just corn, but the grass cover crops, or cereal grains too. | 
OM
