NOVELTY - The method involves providing manures and organic by-products at one end of a fermentation device, and mixing the manures and organic by-products with a stirrer. A preliminary fermentation is done by depositing the mixture with a stirrer and controlling the moisture content to 80% or higher. A main fermentation is done by repeatedly turning the preliminary fermented compost with a stirrer to supply air to the mixture, and maintaining moisture content of 75% or higher. The main fermented compost is repeatedly turned with a stirrer to supply air to the main fermented compost.    USE - Used for manufacturing fermented compost that is utilized as a fertilizer for supplying nutrition to crops.    ADVANTAGE - The main fermented compost is repeatedly turned with the stirrer to supply air to the main fermented compost, thus obtaining perfectly fermented compost so that there is no ammonia gas generated and hence no malodors and no decaying even when left alone for long periods of time. The fermented compost obtained is environment friendly and prevents damage to crops due to diseases and insects, and allows organic cultivation with little or no agricultural chemicals. The method does not require a fermenter equipped with an expensive blower device and hence allows the manufacture of compost at low costs.    DETAILED DESCRIPTION - The method involves providing manures and organic by-products at one end of a fermentation device, and mixing the manures and organic by-products with a stirrer. A preliminary fermentation is done by depositing the mixture with a stirrer and controlling the moisture content to 80% or higher. A main fermentation is done by repeatedly turning the preliminary fermented compost with a stirrer to supply air to the mixture, and maintaining moisture content of 75% or higher. The main fermented compost is repeatedly turned with a stirrer to supply air to the main fermented compost.    INDEPENDENT CLAIMS are also included for the following:    (1) a fermented compost having a moisture content    (2) a device for manufacturing fermented compost comprising a preliminary fermentation section.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of a method of manufacturing fermented compost.