How to solve the problem of organic fertilizer fermentation?

Most of the raw materials for organic fertilizer fermentation are poultry manure, such as cow manure, pigeon manure, chicken manure, pig manure, etc. The nutrients in these manures have many benefits to the soil and crops. Poultry manure must be thoroughly fermented and decomposed before it can be used. Unfermented poultry manure contains many heavy metals, nematodes, coliform bacteria, germs and pests. Therefore, some problems will occur during the fermentation process. If some problems are not solved, it will affect the fermentation effect. We have sorted out some of the fermentation processes. Some problems and solutions you will encounter:

Slow heating up: the stack body does not heat up or heat up slowly

Possible causes and solutions:

1.The raw materials are too wet: add dry materials according to the ratio of the materials, then stir and ferment.

2.The raw materials are too dry: According to the humidity, add water or moist materials to maintain the moisture at 45%-55%

3.Insufficient nitrogen source: add ammonium sulfate with high nitrogen content to maintain the carbon-nitrogen ratio at 20:1.

4.The pile is too small or the weather is too cold: pile the pile high and add easily degradable materials such as corn stalks.

5.The pH is too low: when the pH is less than 5.5, lime or wood ash can be added and mixed evenly to adjust the pH of the fermentation reactor.

The pile temperature is too high: the pile temperature during the fermentation process is ≥65℃

Possible causes and solutions:

1.Poor air permeability: turn the pile regularly to increase the air permeability of the fermentation pile.

2.The pile is too large: reduce the size of the pile.

Peculiar smell: the smell of rotten eggs or rotten eggs is constantly emitted from the pile

Possible causes and solutions:

1.The content of ammonia is too high (C/N is less than 20): Use deodorant for disinfection and deodorization and add substances with high carbon content: crop stalks, peanut shells, rice husks, etc.

2.The pH value is too high: add acidic substances (calcium phosphate) to lower the pH value and avoid the use of alkaline components (lime).

3.Uneven ventilation or poor air flow: remix the materials and change the formula.

4.The stacking of materials is too dense: remix the stack and add particulate matter as appropriate according to the density of the materials.

5.Anaerobic environment: turn the pile regularly to increase the oxygen content in the pile.

Mosquitoes and flies reproduction: there are mosquitoes and flies reproduction in the fermentation pile

Possible causes and solutions:

1.The raw materials are stacked for too long before fermentation: the raw materials are processed quickly, and the surface layer is sprayed with probiotic deodorant to reduce odor and mosquitoes.

2.Fresh feces cover the surface of the pile to breed mosquitoes: turn the pile every 4-7 days, and cover the surface of the static pile with a 6cm compost layer.

Material agglomeration: the pile of fermented materials has large parts with inconsistent structure

Possible causes and solutions:

1.Uneven mixing of raw materials or insufficient turning: improve the original mixing method.

2.Uneven air flow or insufficient surrounding: sorting or crushing compost to improve air distribution.

3.The raw materials contain large chunks and non-degradable or slow-degrading materials: sorting compost, crushing, and finishing raw materials.

4.The composting process is not over: extend the fermentation time or improve the fermentation conditions.