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Chapter topics:
- Organic matter. Organic manures (1): green manure, farm yard manure
- Importance of organic matter in the soil
- Organic manures
- Green manure
- Farm yard manure (FYM)/ muck/ penmanure
A valid license for package „Opiq Private User Package”, „Opiq Pupil Package” or „Opiq Teacher Package” is required to use the kit. Click the link with the package name to learn more about the package and order a license.
If you have a valid license, log in to view the chapter.
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