The technology makes use of red worms to process fresh manure filled into a trench to improve soil fertility. To process the manure, a trench is prepared and filled with fresh manure and 5 kg of worms, which feed on the manure and process it. Within 20-25 days bio-humus is produced and then separated from the worms by using a metal mesh, and the activity can be repeated anew. The produced bio-humus is used as an organic fertilizer for vegetable production. Application norms are 2.5-5 tons of bio-humus per hectare.