Three Common Methods for Composting Organic Fertilizer

1. Stacking Method

Stack up fresh livestock manure and urine, and maintain ventilation during stacking. At high temperatures, manure and urine will be broken down quickly, finally the organic fertilizer is produced in a short time.

2. Closed Fermentation

Livestock manure and urine are stacked layer by layer, and they will be squeezed during the period. If they are too dry, then add enough water to keep it moist. The height of fertilizer is 1.5-2 meters. Upon completion, the manure are sealed with mud, usually at a temperature of 15℃ to 35℃. In this way, more humus is accumulated and less nitrogen is lost. After about 3-4 months, organic fertilizer can reach a state of semi-decomposition, and after more than 6 months, it can be completesly decomposed.

3. Cross Stacking Method

Alternating composting with a loose and compact manner can reduce the decay time of organic manure and reduces nitrogen loss. When stacking fresh organic fertilizer, do not compacting it to allow it to compost. Normally, the temperature in the manure pile can reach 60℃ to 70℃ after 2 to 3 days. After that, the fresh organic fertilizer can be accumulated layer by layer, until the height reaches between 2-2.5 meters. Finally the manure after stacking is sealed with mud to keep temperature up, keep the air out, prevent the loss of fertilizer and evaporation of large amounts of water. Usually, the stacking materials can rot in a month and a half to 2 months and can rot completely after 4 months.