How can the use of Bt pesticides help us?

How can the use of Bt pesticides help us?

Insecticides, whether low-toxic pyrethroids or high-toxic organophosphorus residues, are more severe. How can using Bt insecticide help us?

The first point is to pay attention to the quality of Bt. Bt insecticide is non-toxic to people and animals and is safe to use. Bt bacterial protein toxin has no effect on gastrointestinal tract of human, livestock and poultry. If the bacterial content in the product is low, please increase the concentration. Open the bottle cap during inspection. If it smells, it may expire. Do not mix Bt with carbendazim, dobutamine and other drugs. Sprayers that spray chemicals should also be flushed.

Second, please pay attention to the weather when using it. Biological pesticides are highly selective and usually harmless to vertebrates. A small amount of pyrethroid pesticides can be added and taken on cloudy days or in weak light. If the sun is strong, ultraviolet rays will kill Bt. On sunny days, applications are usually made before 10 in the morning or in the afternoon. I was sprayed with fog in the morning. The temperature is generally 10~35℃. Too low will affect the feeding of insects, and the control effect is poor.

Third, the selectivity of Bt pesticides is very high. Bacteria only infect certain kinds of insects to protect natural enemies. Bt pesticides do not pollute the environment and affect the activities of soil microorganisms. This is a clean pesticide. The continuous use of Bt pesticides will form an epidemic area of pests and lead to the widespread spread of pests and diseases, thus naturally controlling the population density. Bt pesticide has no residual toxin. You can eat it safely.

Fourthly, pathogenic bacteria can not only inhibit the target insects. Bt insecticide has the advantages of strong specificity, high efficiency and safety to people and animals. There are also some limitations in the production and control of commercial Bt preparations, such as poor quick response, insensitivity to mature larvae, short duration in the field, unstable genetic characteristics of recombinant engineering strains, etc., which have become the restrictive factors affecting the further successful popularization and use of Bt. Biological pesticides have strong selectivity.