Biological pesticide use precautions

Grasp the temperature. When spraying bio-pesticide, it must be controlled at an ideal temperature above 20 °C. The secret is that the active ingredient of this kind of pesticide is composed of protein crystals and living spores. Once sprayed below the above temperature, then The rate of propagation of spores in the body of the pest is very slow and the protein crystals are difficult to exert their effects, often showing no control effect after application. According to the experimental data, the bio-pesticides after spraying are 1-2 times higher than the insecticidal efficiency between 10 and 15 °C between the conditions of 25-30 °C.

Hold the humidity tight. Biological pesticides are also extremely sensitive to humidity requirements. The greater the environmental humidity, the more significant the efficacy of spraying biological pesticides, especially for powdered biological pesticides. The reason is that the spores of bacteria are extremely resistant to dry environmental conditions, so the efficacy can only be fully exerted under high humidity conditions.

The conditions of sunlight cannot be ignored. The ultraviolet rays in the sun have a lethal killing effect on spores. Scientific experiments have shown that direct sunlight for 30 minutes will kill spores by 50% in one fell swoop. After one hour of irradiation, the spore mortality rate is as high as 80%, and ultraviolet radiation. Parasporal crystal

The last level is the rain conditions. Spores are most afraid of heavy rain, so it should be carried out according to the weather forecast, because the rain will wash away the sprayed bacteria and lose the lethality. If it is rained (light rain) after spraying (5-6 hours later), it will not reduce the efficacy, but it will improve the control effect. The original rain is very beneficial to the spore germination, and the pest accelerates its death once it is eaten. .

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