Three years of core samples

jbest123(Zone 5 PA)May 20, 2010

Four years ago I filled my new raised beds with composted lawn and garden debris rich with horse bedding. My gardening style with these beds has been no till and I top dress the beds each fall with composted horse bedding. As the red worms bring bottom soil and casings in to the beds I have to top dress less and less. The next three photos are of the 1st, 2nd and 3rd year core samples in that order. In the first photo you can see what looks like soil and/or worm casing on the bottom and many recognizable wood chips and pine needles on the top. The core sample in the second photo fell apart when trying to remove it from the mold. It may have been drier or smaller particle size that caused it to fall apart. There was a good bit more material that looked like soil/casing and just a few recognizable wood chips and no pine needles. The core sample in the third photo looked homogeneous from top to bottom with no recognizable material. It fell apart easier than the second core sample and I am more convinced it has to do with particle size and moisture. When this sample dries out (to save on postage) I will send it to Penn State University for analysis. One of there tests is percentage organic material. Since the only thing I have put in the beds was organic, I think I can assume that anything that is not organic is either soil or worm casing. John

Here is a link that might be useful: John's Journal

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sb158(9a)

Your method obviously works. That bottom soil is beautiful!

    Bookmark   May 25, 2010 at 12:48AM
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