Isaria is a member of Pezizomycotina, Sordariomycetes,Hypocrellales, Cordycipitaceae. Its main feature is the appearance of conidiophores.It is bottle-shaped or nearly spherical (phial stem), whorled on the ends of the hyphae or on short side branches, and the conidia are single cell chains.As a kind of entomopathogenic fungi distributed on a global scale, Corynespora can infect more than 40 kinds of insects in 8 orders. Such as tea green leafhopper, psyllidae (Psyllidae), whitefly (Trialeurodes vaporariorum),The larvae of Anomala corpulenta, Myzus persicae, Spodoptera litura) and so on.
The use of fungal insecticides to control pests has the following advantages:
1. It has relatively strong selectivity, and it has no effect on vertebrates.
At the same time, non-target invertebrates are generally not killed or seldom directly killed or infected;
In the process of long-term co-evolution with pests, bacteria have adapted to the defense system of insects. The immunity of insects to fungi is one
Generally maintain a low level, so pests are not prone to resistance to pesticides under conventional conditions;
2. Compatible with other biological control materials;
3. No outbreak of minor pests;
4. Entomogenous fungi can continue and spread in the host population and its environment,
Continue to control the host population;
5. The artificially synthesized chemical components in biological pesticides are few, and the main components are generally natural
Active substances produced in the world, or secreted by active substances, so they are easily absorbed by the natural environment after use
Decomposition, will not accumulate or remain in nature;
6. Through selection or genetic improvement, a product with strong pathogenicity can be obtained
Department;
7. After the pathogenic microorganisms are released, they can not only control the target pests, but also protect natural enemies.
The population density of the target pests can be briefly affected, and a higher level of ecological balance can be achieved;
8. Easy to carry out work
In industrialized production, various microbial production processes are similar, and generally no three wastes are generated.
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