Why flush good fertilizer down the drain? When properly handled human manure, also called humanure, can be an important part of maintaining soil productivity.
"When crops are produced from soil, it is imperative that the organic residues resulting from those crops, including animal excrements, are returned to the soil from which the crops originated. This recycling of all organic residues for agricultural purposes should be axiomatic to sustainable agriculture. Yet, spokespersons for sustainable agriculture movements remain silent about using humanure for agricultural purposes. Why?
Perhaps because there is currently a profound lack of knowledge and understanding about what is referred to as the "human nutrient cycle" and the need to keep the cycle intact. The human nutrient cycle goes like this: a) grow food, b) eat it, c) collect and process the organic residues (feces, urine, food scraps, and agricultural materials), and d) return the processed organic material back to the soil, thereby enriching the soil and enabling more food to be grown. The cycle is repeated, endlessly. This is a sustainable process that mimics the natural cycles of nature and enhances our ability to survive on this planet. When our food refuse is instead discarded as waste, the natural human nutrient cycle is broken, creating problems such as pollution, loss of soil fertility, and abuse of our water resources."
This web page, from chapter 8 of The Humanure Handbook by Joseph Jenkins, shows us step-by-step how to construct a clean, odor free composting toilet that can be built in a few hours for pocket change, but will return huge dividends in garden soil fertitlity.
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