What items are tested for organic fertilizers

Organic fertilizer mainly comes from plants and animals, and is applied to the soil as a carbon containing material with the main function of providing plant nutrition. Not only can it provide comprehensive nutrition for crops, but it also has long fertilizer efficiency, can increase and update soil organic matter, promote microbial reproduction, improve soil physicochemical properties and biological activity, and is the main nutrient for green food production. Do you know which items need to be tested for organic fertilizer? Are there any testing standards? Today, let's take you all to learn about:

Testing items:

Calcium, copper, iron, magnesium, manganese, zinc, selenium, fluorine, total lead, total chromium, total cadmium, total mercury, total arsenic, pH value, moisture, wear rate, particle size, compressive crushing, fineness, mass fraction of total nutrients, total nitrogen content, potassium content, phosphorus content, amino acid, organic matter content, tetracycline, chloramphenicol, doxycycline, sulfonamide drugs, and other items.

Testing standards:

GB/T 32951-2016 Determination of oxytetracycline, tetracycline, aureomycin, and doxycycline content in organic fertilizers - High performance liquid chromatography method

HG/T 5332-2018 Humic Acid Bioorganic Fertilizer

NY/T 1868-2010 Guidelines for the Reasonable Use of Fertilizers Organic fertilizers

NY/T 300-1995 Determination of available phosphorus for organic fertilizers

NY/T 301-1995 Determination of available potassium for organic fertilizers

NY/T 302-1995 Determination of moisture content in organic fertilizers

NY/T 303-1995 Determination of crude ash content in organic fertilizers

NY/T 304-1995 Determination of total organic matter in organic fertilizers

NY/T 305.1-1995 Determination method for copper in organic fertilizers

NY/T 305.1-305.4-1995 Determination of Copper, Zinc, Iron, and Manganese in Organic Fertilizers [bound edition]

NY/T 305.2-1995 Determination method for zinc in organic fertilizers

NY/T 305.3-1995 Method for determination of iron in organic fertilizers

NY/T 305.4-1995 Determination method for manganese in organic fertilizers