A bio-fertilizer manufacturer teaches you how to distinguish between bio-fertilizers and farmyard manure.

Release Date:

2019-08-27

In many promotional materials for bio‑fertilizers, some manufacturers claim that bio‑fertilizers can completely replace farmyard manure and even outperform it. In reality, this is nothing more than exaggerated marketing. Bio‑fertilizers and farmyard manure are fundamentally different. Below, a fertilizer‑R&D expert from China Agricultural University will provide a detailed explanation of the differences between these two types of fertilizers.

In many Biofertilizer Some manufacturers claim in their marketing that bio‑fertilizers can completely replace farmyard manure and even outperform it. In reality, this is nothing more than exaggerated rhetoric. Bio‑fertilizers and farmyard manure are fundamentally different. Below, a fertilizer‑R&D expert from China Agricultural University will provide a detailed explanation of the differences between chemical fertilizers and farmyard manure.

What are the commonly used types of farmyard manure, and what are their characteristics?

Commonly used farmyard manures primarily include human excrement and urine, stable manure, compost, fermented manure, oilseed cake fertilizer, wood ash, lime, and old wall plaster, among others.

The main characteristics of these farmyard manures are:

(1) It is available in vast quantities. It plays a crucial role in agricultural production, with a wide range of sources and the ability to utilize locally available materials, thereby reducing agricultural production costs.

(2) Nutrients. The primary forms are organic: nitrogen is present as protein, and phosphorus exists as phytate, nucleoproteins, and lecithin. Most organic nutrients cannot be directly absorbed and utilized by plants; therefore, the fertilizing effect of farmyard manure is slower but longer-lasting than that of inorganic fertilizers.

(3) Generally contains a high proportion of organic matter. In farmyard manure, the organic matter is decomposed by soil microorganisms, releasing carbon dioxide and producing organic acids; this enhances plants’ carbon‑dioxide nutrition and promotes the solubilization of poorly soluble nutrients in the soil.

(4) It can improve soil quality. The organic matter in farmyard manure is transformed into humus through microbial activity in the soil; humus promotes the formation of soil aggregates, making the soil loose and easier to till. At the same time, it enhances soil aeration and permeability, fosters microbial activity, facilitates the decomposition and transformation of soil nutrients, and strengthens the soil’s capacity to retain water and nutrients.

(5) is a complete fertilizer. Farmyard manure not only contains the three major nutrients—nitrogen, phosphorus, and potassium—but also includes other elements such as calcium, magnesium, and sulfur, as well as trace elements, thereby comprehensively meeting the nutritional needs of crops.

Which crops are most suitable for application of human manure and urine? Which crops and soils should not be heavily fertilized with human manure and urine?

Well‑decomposed human excreta contain a high proportion of inorganic nutrients, such as ammonium carbonate and phosphates, which can be directly absorbed and utilized by crops; therefore, it is a fast‑acting fertilizer. Human excreta are effective for the growth of a wide range of crops and are particularly well suited to leafy vegetables (such as Chinese cabbage and cabbage) and fiber crops. However, it should not be applied excessively to chlorine‑sensitive crops like tobacco, potatoes, and sweet potatoes, as this may reduce starch content in the tubers and make them more difficult to store.

What is biofertilizer? ？

Biofertilizers are bio‑based fertilizers produced through industrial-scale cultivation and fermentation of one or several beneficial microorganisms. When applied in agricultural production, they enhance the supply of plant nutrients or promote plant growth via the metabolic activities of their microbial constituents, thereby increasing yields, improving the quality of agricultural products, and enhancing the agro‑ecological environment. In particular, in protected vegetable production, where excessive and repeated fertilizer application has led to substantial residual unabsorbed nutrients that degrade soil quality—causing salinization and acidification—the use of microbial fertilizers can significantly ameliorate soil conditions, reduce the need for chemical fertilizers, and improve vegetable quality.

Production of microbial fertilizers the equipment

The microbial production process is essentially the same as the organic fertilizer‑processing flow; however, the selected fertilizer granulation equipment must maintain strict temperature control, or employ a cooled‑granulation unit, to prevent excessive temperatures during continuous operation that could inhibit microbial activity or even kill the microorganisms.

That concludes the discussion on the differences between biofertilizers and farmyard manure. Both are beneficial for crop growth, helping to restore severely degraded soil ecosystems and enhance soil fertility by replenishing beneficial soil microorganisms. Applying a combination of microbial fertilizers and farmyard manure is the most direct and effective approach.

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A bio-fertilizer manufacturer teaches you how to distinguish between bio-fertilizers and farmyard manure.

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