Difference on chemical property
The potassium humate is similar to the potassium fulvate. All belong to the humic acid salt series. And the only difference between potassium humate and potassium fulvate is that the raw material used for producing potassium fulvate is rich in fulvic acid.
The water-soluble humic acid in the potassium humate is a high molecular structure. When it encounter metal ions such as calcium magnesium etc. in the water. The flocculation substance is slowly generated. The precipitate is finally formed.
The water for agricultural production is generally well water and river water. Most of which belong to hard water and contain a large amount of high-valence metal ions. This will inevitably affect fertilizer use and even lower the fertilizer efficiency.
The fulvic acid in potassium fulvate is used as a substance which is better in activity and smaller in molecular chain, can be dissolved in acid, water and alkali solution at the same time, and can maintain stability, no precipitation, no flocculation and no layering. The actual detection: the potassium fulvate can be kept in a stable state in the solution of pH2-14.
The potassium humate and potassium fulvate difference on application
- Similar aspects: combined with nitrogen, phosphorus, potassium and other elements needed by plants. They can become multifunctional and efficient compound fertilizers. And can be used for soil improvement, plant production stimulants and fertilizer enhancers.
- Different aspect: the potassium fulvate is a high-efficiency macromolecular organic compound. Which can stimulate the fast rooting of the crop, the multi-rooting, the strong growth, the increase of the content of the chlorophyll, the Vc content and the sugar content. And play the role of drought resistance, cold resistance, disease resistance, and a high-quality complexing agent. The product is full of water-soluble, acid and alkali resistant, anti-divalent ion, can be co-dissolved with a plurality of trace elements and a plurality of elements, and there is no flocculation. Mainly used as a agent or an additive of NPK fertilizer. But potassium humate is generally not suggested to use by mixing with NPK fertilizer.