The difference between decomposed and undecomposed fertilizers

Fermentation

Mature fertilizers are composted and fermented before use. Microorganisms decompose organic animal and plant residues and feces into ingredients that can be absorbed by plants. Uncomposted fertilizers are not fermented before use. If they are applied directly, the fermentation will be completed in the soil.

oxygen

Mature fertilizer requires a lot of oxygen during fermentation, and will produce a lot of heat and toxic gases, but it will not compete with plants for oxygen when applied; while uncomposted fertilizer will complete fermentation in the soil when applied, and will compete with plants for oxygen, and the heat generated will burn the roots.

Impurities

Composted fertilizers have fewer impurities, while uncomposted fertilizers contain a large number of pathogens and insect eggs, making plants more susceptible to damage from pests and diseases.

gas

Earthworms can survive in soil that has been fertilized with decomposed fertilizers, which can loosen the soil and promote the development of plant roots. However, uncomposted fertilizers contain phenol or ammonia residues, which are not suitable for earthworms to survive.

Utilization

Part of the nutrients in decomposed fertilizers are converted into fast-acting nutrients that can be quickly absorbed by plants; while the nitrogen fertilizer in undecomposed fertilizers exists in the form of uric acid or urate, which not only cannot be absorbed by crops, but is also harmful to the growth and development of the crop's root system.