PREVIEW
... ethod for humans to produce fertilizer, capable of maintaining soil fertility for years without the need for fallowing.
Although Europe had simple composting as early as the 17th century, it was all done by experience, mixing organics haphazardly and letting it sit for a while, resulting in rather mediocre fertility. It wasn't until the mid-19th century, with scientific composting theories, that fertility gradually improved.
Joseph had learned about the basic principles of compos ...
YOU MAY ALSO LIKE





























