Fertilizer synergists refer to a class of active substances for the purpose of increased nutrient availability.
It can increase the supply of crop nutrients by fixing nitrogen and activating phosphorus and potassium elements that are difficult to use in the soil and plays a certain role in regulating plant physiological functions.
It is usually added to conventional fertilizers, which can appropriately reduce the amount of fertilizer application and improve the utilization rate of fertilizers.

The most common product on the market at present: Polyaspartic acid (PASP), Gamma Polyglutamic Acid (γ-PGA), Gamma Aminobutyric Acid (γ-GABA), and Alginate oligosaccharide.