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Chapter topics:
- Natural fertilisers (manure)
- Soil fertility
- Meaning and types of fertilisers
- Types of manures
- Green manure
- Farmyard manure
- Compost manure
- Advantages of manures
- Disadvantages of manure
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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