A Detailed Introduction to the Types and Effects of Organic Fertilizers

Organic fertilizer is the general term for all fertilizer sources that contain a large amount of organic matter. Its nutrients are relatively comprehensive, and its fertilizer effect is stable and lasting. It has an obvious effect on improving crop yield and quality, and it is an important type of fertilizer in agricultural production. Although organic fertilizer has many benefits, it should not be applied in excess, and attention should also be paid to its combined use with inorganic fertilizers, biological bacterial fertilizers, and so on, as this is more conducive to crop growth. So what types of organic fertilizer are there? What are their effects? Let's find out together.

1. Manure and urine fertilizers

These include human feces and urine, livestock manure and urine, poultry manure, and other animal manures. They are rich in organic matter and in nutrient elements needed by crops, such as nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, and iron, and can promote plant growth and the material cycle of the soil ecosystem.

2. Crop straw

It is a by-product of crops. Crop straw contains nutrient elements essential to crops, including N, P, K, Ca, S, and so on. Under suitable conditions, through the action of soil microorganisms, these elements are mineralized and returned to the soil for crops to absorb and utilize.

3. Green manure

Green manure is the use of all or part of green plants, turned directly into the soil as fertilizer, and it is one of China's traditional important organic fertilizers. Green manure has a good effect in providing the nutrients needed by crops, improving the soil, improving the farmland ecological environment, and preventing soil erosion and pollution.

4. Cake fertilizer

These include rapeseed cake, cottonseed cake, soybean cake, sesame cake, castor cake, tea seed cake, and so on. Various types of cake fertilizer are generally rich in organic matter, nitrogen, and a considerable amount of phosphorus, potassium, and major or trace elements. Although the nitrogen and phosphorus in cake fertilizer cannot be used directly, because the nitrogen content of cake fertilizer is relatively low and it decomposes easily, compared with other organic fertilizers, its fertilizer effect is easier to release.

5. Compost and waterlogged compost fertilizers

These include barnyard manure, compost, waterlogged compost, and so on. Compost and waterlogged compost fertilizers are organic fertilizers made by composting with straw, weeds, leaves, peat, garbage, and rural waste as the main materials, with an appropriate amount of human and livestock feces and urine added. The organic matter in compost and waterlogged compost fertilizers decomposes under anaerobic conditions, the nutrients are not easily volatilized, and the available nutrients formed are mostly adsorbed by the soil and not easily lost, so the fertilizer effect is long and stable.

6. Biogas fertilizer

In sealed biogas digesters, the by-products after organic matter decomposes and produces biogas, including biogas slurry and residue. It is a high-quality organic fertilizer that is both slow-acting and quick-acting, and it is an effective measure to eliminate manure odor, kill pests, and improve the rural living environment.

7. Sea fertilizer

At present, sixty or seventy kinds of marine animals and plants can be used as fertilizer, mainly divided into three major categories: animal-based sea fertilizer, plant-based sea fertilizer, and mineral-based sea fertilizer. Sea fertilizer has high fertilizer efficiency and a significant yield-increasing effect, but note that its application method should vary according to the variety.

8. Commercial organic fertilizer

It is a fertilizer made through factory-style processing and production using solid waste rich in organic matter, such as livestock and poultry manure, animal and plant residues, and household garbage, as the main raw materials, with a certain amount of other auxiliary materials and fermentation microbial agents added. Compared with traditional farmyard manure, commercial organic fertilizer has the characteristics of comprehensive nutrients, high content, and stable quality.



The above is an introduction to the types and effects of organic fertilizers. In short, there are differences in the specific effects and application methods among different varieties of organic fertilizer, so before application, you must clearly understand their characteristics and principles to avoid being too clever by half.

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