How to judge humic acid fertilizer is true?

Currently, humic acid products on the market are more confusing and there is no uniform standard. NY/T1106-2010 "Water-Soluble Fertilizers Containing Humic Acid" is the industry standard for humic acid fertilizers issued by the Ministry of Agriculture, and the rest are corporate standards. If humic acid is added to the compound fertilizer or blended fertilizer, the content of humic acid can only be marked in the contents of the packaging bag, but the big name on the fertilizer packaging bag cannot be changed, that is, the packaging bag must be marked with compound fertilizer or Blended fertilizers cannot be labeled as humic acid-containing (mixed) fertilizers. At the same time, the nitrogen, phosphorus and potassium contents of the fertilizer must also meet the standards of compound fertilizers or blended fertilizer standards.

Second, check the humic acid content on the packaging bag.

According to the relevant regulations, the humic acid fertilizer packaging bag should be clearly marked with the content of humic acid, if only marked with the word humic acid, and no specific labeling of the amount contained in it should be careful, after all, containing 0.01% is also called containing.

Finally, check the product instructions.

Different crops, different periods, the use of humic acid fertilizers are different, therefore, fertilizer instructions must be written in full, write meticulous. If the description is rough, and there is no professional technical staff to use the guide, it is not recommended to buy.

The quality of humic acid fertilizer can be judged according to its water solubility and color.

Place the humic acid fertilizer in the water and observe how quickly the solution dissolves, whether it dissolves completely, and whether or not precipitates are present. Usually good quality humic acid fertilizers perform well. Pour a small amount of humic acid water soluble fertilizer in clean water, if the color is very dark, it may be dyed. If it is a humic acid fertilizer granule, it can be hand-stirred, faded and the color is difficult to wash off with water, and there is also suspected of staining. The granules can also be crushed to see if the inside and the outside are of uniform dark brown color. If only the outside is black and the inside is white (or other colors), it may be stained. Special emphasis is that there is a kind of fertilizer on the market that is white granules. It is said that white humic acid is added, so it is white. If it is encountered, it must not be bought because there is no white humic acid at all.

In some humic acid fertilizers, the original humic acid powder that has not been activated or has a low degree of activation is added. The humic acid fertilizer produced by it is ineffective and has a slow effect. Taking phosphate rock as an example, although phosphate rock also has phosphorus content, the effect is very slow, and processing into superphosphate can produce the best results. The same applies to humic acid, which must be activated before it can exert its effect. If you encounter humic acid fertilizer at a very low price, it is very likely that humic acid fertilizer added with the original powder should be taken care of.

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