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Video show the mixing and steaming of soil:

Video showing how to make liquid fertilizer:

Soil Technology:

It is essential to amend the soil in many parts of Africa where there are the following soil types:

These soils have too much clay and/or have little organic humus resulting in:
With no winters to destroy unwanted pests and diseases, soil bound insects will eat the roots of western vegetables and multiply unchecked and attack the valuable crop.

This can be solved by mixing different types of earth using clay, sandy and silty soils and then steam cleaning the mixture.

Mixing can be done by hand or mixer (photo - top)

The picture below shows the steamer and a liquid fertilizer distiller with a compost chamber in the rear.
mixing the different soils to make the correct 'ph' value

steamer, liquid fertilizer maker and compost chamber