This article summarizes the data collected on the basis of several years of scientific and practical research, and identifies the bioecology of the main Lepidoptera family with high rates of economic damage to forest and agricultural crops, developmental stages, and species composition and systematics. Accordingly, several species of parasitic entomophages belonging to the families Trichogrammatidae, Braconidae, Ichneumonidae, Chalcididae, Pteromalidae were studied and systematically analyzed for species composition.
This article identified the entomophagous species that are constantly feeding on alfalfa, and identified 27 species of entomophagous predominant species belonging to 7 families of entomophagous species of alfalfa pests. It was observed that these are the families Neuroptera, Aphelinidae, Syrphidae, Coccinellidae, Anthocoridae, Nabidae and, Miridae. According to the ratio of entomophages, the most populous families were identified as goldflies (Shrysopidae), khan beetles (Coccinellidae), and wild caterpillars (Miridae). Their populations formed diversity. Studies have been conducted on the use of parasite encarcation parasites in the management of whitefly population. It has been used in a variety of consumption norms against leachate in open and closed conditions. Encarsia (Encarsia partinopea Masi) was used to control the amount of whitefly (Trialeurodes vaporariorum) in greenhouse conditions. In the greenhouse conditions, 87.9% biological efficiency was achieved on day 28 after the application of encarcation in a 1:10 ratio in cucumber crops, and by the end of the season, parasitic entomophages were effectively controlling the amount of whiteflies. After 24 days of application in a 1:10 ratio in cucumbers planted in the open, the biological efficiency reached 83.5%. At 30 days after application, 86.5% biological efficacy was maintained.
The article discusses the issue of mass breeding in the biological laboratory of the ovarian parasite of the corn moth-trichogramma, in particular, the species Trichogramma ostriniae, widely represented in the nature of Uzbekistan.
The article discusses the harm, biology and morphology of sucking pests of citrus crops. Citrus whitefly on citrus, in case of early settlement and high density, yield can be reduced up to 30%. It can give up to 3-4 generations. In the conditions of the Bukhara and Khorezm regions of Uzbekistan, citrus whitefly (Dialeurodes citri.) Can develop, which is distinguished by its smaller size and yellowish color. Citrus aphids One of the most common and dangerous pests of lemons and tangerines is aphids. It most often affects the plant during the period of active growth of young shoots, settling on them and quickly sucking juice from them. By this, it slows down its development; one can also observe that the leaves of citrus dry and fall, and young growth dries out.
At present, in developed countries, including Uzbekistan, the system of coordinated control in the fight against agricultural pests is widely used. Its essence is to protect the crop by using agrotechnical, mechanical, physical methods of pest control, mainly using methods of biological control, which are harmless to the environment, humans and organisms, and the use of chemical methods as an exception when necessary. In recent years, the ecological situation in rural areas has been improved as a result of the use of a combined protection system in cotton, wheat and other crops, ie the method of biological control, which is its core.
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