Bacterial pesticides , we can also be called biological pesticides, biological pesticides have a high insecticidal rate, little or no pollution to the environment, no toxicity to human and animal safety, no disease-resistant pests and anti-drug properties. The insecticidal function of biological pesticides is usually closely related to the number of bacteria and their own activities. When used, the environmental conditions are very strict. If you want to improve the control effect of biological pesticides, you need to use them. Keep the following in mind:
First, the right temperature. The temperature at the time of spraying the biological preparation pesticide is preferably above 20 ° C. Since the main active ingredient of the biological preparation pesticide is the living spore and the protein crystal, the spore is carried out at a very slow speed in the pest body under the condition of low temperature. Reproduction, as the protein crystals do not achieve the desired effect. According to relevant research, if the gas is at a temperature of 25-30 ° C, its efficacy will be about 2 times higher than that at 10-15 ° C.
Second, a suitable humidity is required. When we apply biological pesticides, the greater the humidity of the farmland environment, the greater the efficacy, especially when applying powdered biological agents, only when the humidity is relatively high. The efficacy of the drug. Mainly because the bacteria's spores are not resistant to dry environmental conditions, so it is best to spray the bacteria powder in the morning or in the morning with dew, so that the bacteria can be better adhered to the stem. There is great help on the leaves, and it can increase the propagation of spores and increase the chance of the agent directly contacting the pests.
Third, pay attention to the sun. Because the ultraviolet rays in the sunlight have a great killing effect on the spores, and the ultraviolet rays can also cause the deformation-reducing effect of the parasporal crystals. Pesticide Network Recommendation: In order to prevent the damage of ultraviolet rays in sunlight, we should choose to apply after 4 pm every day or on cloudy days.
Fourth, avoid rain. If you encounter moderate to heavy rain just after application, the sway on the blade will be washed away, resulting in a significant reduction in efficacy. However, if it is raining 5 hours after the administration of the medicine, the efficacy of the medicine will be improved because the light rain is beneficial to the spore activity at these times, and the rapid death of the pest.
For more information, please visit the China Pesticide Network .
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