How can suspension additives optimize the efficacy of pesticides?

Suspension additives play a vital role in optimizing the efficacy of pesticides. They indirectly or directly enhance the efficacy of pesticides by improving the performance, stability and application effect of suspension agents.

First, improve the physical properties of the suspension agent

1. Improve the suspension rate

The dispersant in the suspension agent can be adsorbed on the surface of the pesticide particles to form a protective film to prevent the mutual aggregation and settlement between the particles, thereby improving the suspension rate of the suspension agent. The high suspension rate means that the pesticide particles can remain dispersed in water for a longer time, which is conducive to the uniform application of the pesticide and the full play of the drug effect.

2. Enhance stability

The thickening agent and anti-precipitation agent in the suspension agent can enhance the stability of the suspension agent and prevent the phenomenon of delamination and precipitation in the process of storage and use. The stable suspension agent can ensure the uniform concentration and distribution of the pesticide during the spraying process, and improve the reliability and consistency of the drug effect.

Second, improve the wetting and distribution performance of the liquid medicine on the surface of the plant

1. Reduce surface tension

The wetting dispersant in the suspension agent can reduce the surface tension of the liquid medicine, so that the liquid medicine is easier to wet and spread on the surface of the plant. When the surface tension of the liquid medicine is less than the critical surface tension of the plant surface, the liquid medicine can quickly wet the surface of the plant and spread out, improve the contact area and contact time of the liquid medicine and the plant surface, thus enhancing the absorption efficiency and efficacy of the pesticide.

2. Enhance rain erosion resistance

The adhesive force and deposition amount of the liquid on the plant surface can be improved by using the suspension additive. In this way, even in the case of rain washing, the liquid medicine is not easy to lose and can maintain the efficacy for a long time.

Third, promote the absorption and conduction of pesticides

1. Increase permeability

Some suspension additives also have the ability to promote the penetration of pesticides into plant epidermis. They can make it easier for pesticides to penetrate into the plant body by destroying the waxy layer or cuticle of the plant epidermis, and improve the absorption efficiency and conduction speed of pesticides.

2. Improve bioavailability

By improving the wetting, distribution and absorption properties of pesticides on plant surfaces, suspension additives can significantly improve the bioavailability of pesticides. This means that the effective concentration of pesticides in the plant is higher, and the efficacy is stronger, while reducing the loss and waste of pesticides.

Fourth, reduce pesticide use and environmental pollution

1. Increase the potency

Since suspension additives can significantly improve the use effect of pesticides, the amount of pesticides can be appropriately reduced under the premise of achieving the same control effect. This not only helps to reduce the cost of drugs for farmers, but also helps to reduce the environmental pollution and ecological damage of pesticides.

2. Environmentally friendly

The use of suspension additives can also reduce the loss of pesticide drift and volatilization during the spraying process, reducing the risk of pollution to air, water and soil. At the same time, some suspension additives themselves also have environmental performance, will not have a negative impact on the ecological environment.