Agricultural Silicone Spreading Agent CY-408 is a polyether modified trisiloxane, which is a silicone surfactant with good spreadability and permeability. In the process of spraying pesticides, it has the characteristics of increasing efficiency, saving labor, saving water and saving medicine. It can make sprayed agricultural chemicals play a better role, spread more easily, absorb faster and not easily washed down, and have "rain-proof washout". When spraying pesticides, the concentration of 0.1-0.05% can save more than 50% of pesticides. Reduced the amount of pesticides lost to soil and groundwater, and reduced pesticide residues in the environment, in line with the development direction of green agriculture.
CY-408 is a colorless to light amber liquid. Surface tension (0.1%): <20.5mN / m. Density: 1.01-1.03 g / cm3. Viscosity: (25 ° C) 40-60 mPa.s. Cloud point (0.1% wt%): <10 ºC.
CY-408 can greatly reduce the surface tension of the pesticide spray solution, increase the coverage of the spray, reduce the contact angle between the drug solution and the leaf surface, and enhance the wetting, adhesion and adhesion of the drug solution on the surface of plants or diseases It exhibits performance and allows pesticides to be absorbed through the stomata of the leaves, which can improve the efficacy, reduce the dosage of pesticides, save costs, and reduce the pollution of pesticides to the environment.
CY-408 has extremely strong spreading performance. First of all, we compared the spreading effect of the liquid without synergist, added Tween-20 and CY-408 on the leaf surface. The results show that the expansion diameter of the liquid added with CY-408 is up to 7 times that without the synergist. The medicine liquid can be spread on the blade surface more evenly, directly improving the effective utilization rate of the pesticide, and reducing the loss of the medicine liquid.
Subsequently, the pesticide chlorothalonil was evenly sprayed on the cucumber leaves. After adding CY-408, the pesticide chlorothalonil sprayed on the cucumber leaf surface was reduced by 52.9%, and the drug droplets were crushed evenly, so that the leaves showed moisture. While reducing the amount of use, the adhesion rate of pesticides on the surface of the leaves increased by 62.5%, which improved the efficacy.
Then, we will further study the auxiliary effect of CY-408 on pesticides by comparing the effects of additives on powdery mildew. After adding CY-408, spraying 2000 times chlorothalonil can effectively reduce the incidence of cucumber powdery mildew, and the control effect is 44.1% higher than that without adding synergists.
Spraying pesticides may cause damage to the plants themselves while preventing pests and diseases. After spraying 2,000 times of chlorpyrifos, we caused serious damage to the cucumber leaves, which inhibited the photosynthesis of the plants. The uneven distribution of drug droplets caused local burns on the leaves. After adding CY-408, the dosage of pesticide was reduced, the agent was spread evenly, the photosynthesis was not damaged, and the plants grew normally.
Changes of chlorophyll fluorescence in cucumber leaves after spraying chlorpyrifos (400 times solution)