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The synergistic effect of fulvic acid on nitrogen fertilizer
May 02, 2018

Fulvic acid contains carboxyl groups, phenolic hydroxyls and other functional groups, and has strong complexation, chelation and surface adsorption capabilities, which can reduce the loss of ammonium nitrogen. For example, fulvic acid-urea, etc., is actually complexed (chelated) substances, which can make ammonium bicarbonate reduce the loss of ammonium nitrogen and increase the utilization rate of nitrogen fertilizer. Oxidatively degraded nitrofatric acid can inhibit urease activity and reduce urea volatilization.

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Adding fulvic acid in ammonium bicarbonate can reduce the ammonium volatilization rate of ammonium bicarbonate from 13.1% to 2.04% in 6 days. In the field test, the effect of ammonium bicarbonate maintains for more than 20 days and the effect of ammonium fulvic acid can reach above 60 days. The results of nitrogen fertilizer utilization showed that the utilization rate after adding fulvic acid increased from 30.1% to 34.1%, and the nitrogen uptake increased by 10%.

 

The effect of fulvic acid and nitrogen on plant growth and development is very obvious. When nitrogen and fulvic acid are sufficient, plants can synthesize more proteins and promote cell division and growth. Therefore, plant leaf area grows faster and more leaf area can be used for photosynthesis. It has a significant effect on promoting plant growth and robustness. After application, the leaf color turns green quickly and the amount of growth increases.            


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