What is biological control

I. What is biological control

Biological control (biological control) refers to the use of one kind of organisms against another kind of organisms. Biological control can be broadly categorized into three main types: insect control, bird control and fungus control. It is a method of reducing the population density of pests such as weeds and pests. It takes advantage of the interrelationships between biological species to suppress one or another type of organism with another or another type of organism. Its greatest advantage is that it does not pollute the environment, which is incomparable to non-biological methods of pest control such as pesticides.

Two, extended information

Biological control includes:

(1) the use of microbial control. Common application of fungi, bacteria, viruses and antibiotic bacteria that can secrete anti-biotic substances, such as the application of Paecilomyces to prevent and control the horsetail pine caterpillar (fungi), Bacillus thuringiensis various variants of preparations to prevent and control a variety of forestry pests (bacteria), the crude extract of the virus to prevent and control the marshmallow moths, pine caterpillars, bubinga pouches moths and so on (viruses), 5406 to prevent and control of the seedling tree standstill disease (Actinobacillus) microsporidium control of the larvae of dance moths and other (protozoa) ), Taishan 1 control of aspen (nematode).

Horsetail pine caterpillar

(2) the use of parasitic natural enemies control. Mainly parasitic wasps and parasitic flies, the most common are red-eyed wasps, parasitic fly control pine caterpillars and other pests, swollen legged wasps to control the aspen, flower hornet aphid wasp control pine mealybugs.

Red-eye wasp

(3) the use of predatory natural enemies control. There are many such natural enemies, mainly insect-eating, rodent-eating vertebrates and predatory arthropods. Birds have tits, gray gladiolus, woodpeckers and other predatory pests in different insect forms. Rodent natural enemies such as weasels, owls, snakes, etc., arthropods in the predatory natural enemies are ladybugs, praying mantis, ants and other insects in addition to spiders and mites.