This Ohio State University Extension Research Circular provides a report on level of heavy metals in soils in various counties in Ohio. This background data is directed towards comparing heavy...

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This organization promotes sustainable agriculture. Their website provides publications on production practices, alternative crop and livestock enterprises, innovative marketing, and organic...

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This .pdf document, available through the The National Sustainable Agriculture Information Service, provides an overview of basic soil science and how natural methods can be employed to improve soil...

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This California Integrated Waste Management Board website provides information regarding composting and mulching, especially helpful for the homeowner.

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