Earth Repair by Leila Darwish

Author:Leila Darwish [Darwish, Leila]
Language: eng
Format: epub
ISBN: 9781550925296
Publisher: New Society Publishers
Published: 2013-06-03T04:00:00+00:00

Figs. 6.7 and 6.8: Laying out wood chips and inoculating with king stropharia (Stropharia rugosoannulata) CREDIT: JA SCHINDLER

DEALING WITH THE OLD TOXIC COMPOST

The second setup we worked out was to use Hypsizygus ulmarius as a remediation kick-starter for the old pile of toxic compost. The approach we used was to fill two 25-gallon half barrels with the old soil sandwiched between layers of H. ulmarius spawn. One of the barrels was filled directly from the pile, and the other was screened with a ½-inch screen to remove bulk contaminant particles, such as combs and larger pieces of tar shingle.

The half barrels have a two-inch drain hole in the bottom, so we propped them five inches off the ground and placed a sediment catch under both of them. To simulate natural conditions as much as possible, the barrels were left outside in the open with just a layer of corrugated cardboard placed over the top. One and a half gallons of H. ulmarius spawn grown out on alder sawdust was added to each barrel and evenly layered every four inches. Each barrel had approximately 20 gallons of soil added into it. No further bioaugmentation was used. At three-month intervals these barrels will be tested for levels of toxicity, and test results will be posted at FungiForThePeople.org.

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