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China Enacted Fertilizer Standard to Define Biostimulants

On November 1, 2021, China began to enact the agricultural standard “NY/T 3831-2021 Organic Water-Soluble Fertilizers-General Regulations”. In addition to the definition, classification and general rules on the raw materials, nutrient/harmful contents and label, NY/T 3831 first defined that this category of agricultural input is the result of organic raw materials and contains biostimulant, resolving the ambiguous legal status and offering conceptual ideas for the pre-marketing procedures for biostimulants.

Organic water-soluble fertilizers(WSF) are produced from free amino acid, humic acid, seaweed extraction, chitosan, polyglutamic acid, polyaspartic acid, molasses, low-value fish and its fermented products, as well as other organic raw materials and microelements, secondary elements and microelement can be added. Depending on the organic mate

rial used, organic WSFs are classified into 7 categories. Since China has already established agricultural standards for organic WSF containing amino acid and organic WSF containing humic acid, these 2 categories are directly reviewed and approved by MOARA and registered under the generic names the same with their category names respectively, while the reminders should be registered under the generic name “Organic water-soluble fertilizers” and deliberated at the technical committee case-by-case basis.

 

Category

Main Ingredient

Generic Name for Fertilizer Registration

1

Organic WSF containing amino acid

Free amino acid

Organic WSF containing amino acid

2

Organic WSF containing humic acid

Mineral-derived humic acid

Organic WSF containing amino acid

3

Organic WSF containing alginic acid

seaweed extraction

Organic water-soluble fertilizers

4

Organic WSF containing chitosan

chitosan

5

Organic WSF containing polyglutamic acid

polyglutamic acid

6

Organic WSF containing polyaspartic acid

polyaspartic acid

7

Other WSF containing

molasses, low-value fish and its fermented products, as well as other organic materials

 

Organic WSF containing amino acid and organic WSF containing humic acid shall satisfy technical requirements specified in agricultural standards NY 1429 and NY 106. For the last 5 organic WSFs, their nutrient claim shall include at least the main ingredient used, pH value, water content (liquid fertilizer only), insoluble and limits of harmful contents. Based on the raw material use, manufacturing process and uses of an organic WSF, toxicity test and efficacy trial would be required conditionally. NY/T 3831-2021 also specified referenced methodological standards available for the testing of these indicators.

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