Biological pesticides need to be applied in good weather. Why?

Biological pesticides need to be applied in good weather. Why? When spraying biological pesticides, we have to worry about the temperature factor. Biological pesticides have very standard temperatures. When spraying is needed, the suitable temperature is above 20 degrees. If it is lower than this temperature, the drug effect will be difficult to show and the control effect will not be achieved. Many manufacturing experiments have confirmed that the efficacy of biological pesticides will be higher than 1-2 times at 20-30℃.

For the harm of humidity, choose the time of day to spray. In fact, biological pesticides are also very sensitive to humidity, and their efficacy will get better and better under high humidity conditions, especially powdery biological pesticides. Therefore, when spraying pathogen particles, we must choose the effect of spraying drugs for a long time before the dew is dry.

The application of biological pesticides under strong light can not start the drug effect, and the obvious additional lines contained in sunlight are destructive to the spores of biological pesticides. Sunlight exposure for more than 30 minutes will kill the related components in biological pesticides, so it is necessary to prevent strong sunlight exposure.

Always care about the weather forecast and do a good job of blowout prevention before heavy rain. Spores in biological pesticides cannot be washed away by heavy rain. If the sprayed bacterial liquid is washed away, the actual effect of pest control will be discounted, and if it is edited, it will be reported as high efficacy. So always pay attention to the harm of temperature, so that the effect of biological pesticides you spray can be fully exerted.

The advantage of using biological pesticides is that it can eliminate many kinds of pests and diseases; Second, it can produce pollution-free and environmentally-friendly products; Third, it can reduce the environmental pollution to the natural environment and ensure the safety of people and animals; The fourth is the maintainable nemesis; Fifth, pests and diseases are not easy to form drug resistance.

Proper application of biological pesticides should be based on the meteorological forecast of pests and diseases produced by local flying defense forces, and applied several days in advance; Use the medicine strictly according to the dosage, and don't increase or decrease the concentration value at will; In order to improve the control effect and safety factor, it can be mixed with some slightly toxic fertilizers, but high-efficiency BT is strictly forbidden to be mixed with pesticides, fungicides and acid-base mixed solutions, and cannot be applied in mulberry fields. Don't expose drugs to sunlight or moisture regain; It is necessary to take medicine at noon on sunny or rainy days. After taking the medicine, it must be sprayed again 1 time.

The action mechanism of biological pesticides has a gradual toxicity to pests and diseases. For example, it takes 1 ~ 3 days for efficient BT to fully play its role, paralyzing the nervous system of pests first, and then destroying their internal organs to cause their death. For another example, when a virus infects a poisonous pest, it is the nucleotide of the virus particle that invades the pest and absorbs the nutrients of the worm, leading to the disintegration and death of tissues and cells. This process must take 3 to 5 days.

Although the visualization effect of biological pesticides is slower than that of biological pesticides, the harm of pests and diseases to plants is suppressed after spraying. Therefore, it is necessary to apply this fertilizer effectively according to its characteristics.

The above is my detailed introduction, I hope it will help you after reading it.