notillgrowers

Open full view…

A new study about compost, cover crops and carbon

farmerjesse
Mon, 19 Aug 2019 08:04:16 GMT

A reader sent alon this study (please always feel free to post or email me relevant studies pertaining to no-till!). Here is the just from the article: “For their 19-year study, published in the journal Global Change Biology, scientists dug roughly 6 feet down to compare soil carbon changes in conventional, cover-cropped and compost-added plots of corn-tomato and wheat-fallow cropping systems. They found that: -Conventional soils neither release nor store much carbon. -Cover cropping conventional soils, while increasing carbon in the surface 12 inches, can actually lose significant amounts of carbon below that depth. -When both compost and cover crops were added in the organic-certified system, soil carbon content increased 12.6 percent over the length of the study, or about 0.07 percent annually. -That’s more than the international “4 per 1000” initiative, which calls for an increase of 0.04 percent of soil carbon per year. It is also far more carbon stored than would be calculated if only the surface layer was measured.” Thoughts? Here is an overview from S cience Direct (via UC Davis): https://www.sciencedaily.com/releases/2019/08/190814161818.htm?fbclid=IwAR02IRIRgvpm2Aa58YKPL9kXFEZG5mIR7_koK4xXcYtgOK5DH1pbI4Jwdw4 And here is the actual study if you have $7: https://onlinelibrary.wiley.com/doi/abs/10.1111/gcb.14762

katherinethurs
Wed, 21 Aug 2019 02:48:00 GMT

How about a podcast episode on the science of carbon sequestering in soil? 😂