Compost is the breakdown product of organic wastes, containing large proportions of humus which is a long-acting soil fertility booster. Any organic material (not talking about certified organic designation, just the carbon-based once-living kind of organic) can be composted, eventually becoming soil again as it once was before being integrated into an organism.
“Composts offer a practical means of maintaining the soil fertility which is the most important factor in the successful operation of a subsistence farm….There are available on practically all farms and gardens many materials which are useful for composts, although the farmer or gardener often fails to appreciate their value. Some of the common materials which are often wasted are leaves, straw, muck, vegetable tops, grass clippings, and garbage material which is inedible for chickens or pigs.”
~C.C. Fletcher, 1935 USDA Yearbook of Agriculture
I find it interesting to read agricultural texts from different eras of our civilization. At the present moment I am increasing my collection of USDA Yearbooks of Agriculture, which I would recommend to anyone who is curious about agricultural techniques, policies, and studies. Particularly interesting to me are those books which were published during and directly following the Great Depression. In these years, agricultural science was making great leaps and bounds, not necessarily with new discoveries but with scientific proof that the practices of the preceding millennia were indeed spot-on, and that we should continue following our ancestors’ examples of land husbandry.
Anonymous Appalachian Agrarian 