METHOD FOR MAKING FERTILIZER FROM CHICKEN MANURE Russian patent published in 2023 - IPC C05F3/00 

FIELD: fertilizers.

SUBSTANCE: method for obtaining fertilizer from chicken manure includes adding aerated compost inoculum, previously obtained from chicken manure, to fresh liquid chicken manure with a moisture content of not more than 75%. In the warm season, the resulting mixture is composted for at least 45 days by forming a storage pit with a volume of at least 500 m³ and periodic mechanical mixing every 20 days of composting. In the cold season, the resulting mixture is composted for at least 90 days in a storage pit with a volume of at least 500 m³. Part of the fertilizer obtained in the previous cycle of composting 30-50% is used as aerated compost inoculum for the subsequent cycle of composting a new batch of manure.

EFFECT: creating a simple and effective technology for composting chicken manure all year round in open areas in a short time to obtain a fertilizer characterized by a high content of organic matter and other nutrients – N, P, K.

2 cl, 1 tbl