The article provides information on the harm and control methods of apple red mite (Panonychus ulmi Koch) in apple orchards. Apple red mite (Panonychus ulmi Koch) is the most dangerous pest of seed orchards and other crops of other European countries. This pest can destroy more than half of the crop yield in some fields. In normal years, spiders are said to destroy 6-10% of the gross crop, and in some years even 14%. Apple red mite (Panonychus ulmi Koch) is the most dangerous and harmful in terms of mites. It is the main pest of melons, technical plants, and horticulture, ornamental trees. More than 150 species of spiders in the world are listed as the main pests of crops. Materials and methods: New chemical Envidor em. k against apple red mite (Panonychus ulmi Koch) in seed orchards. To determine the biological effects of the drug (0.5 l/ha), research was conducted on 25 (twenty-five) hectares of Fuji apple orchards located on the territory of Zevar farm in Sariosiya district in the Surkhandarya region. Agrotoxicological experiments were carried out by the method of K.A.Gar, Sh.T.Khojaev. The calculation of biological efficacy in field and laboratory experiments was determined according to the W.S.Abbot formula, which takes into account the control option. Research results. According to research, the new Envidor em. k. (0.5 l/ha) was the highest on the 3 days of our observations in the variant in which the drug was used, i.e., the biological efficacy was 89.2%. Conclusion: Envidor em. k. high biological efficiency can be achieved by applying the drug at the rate of consumption per hectare (0.5 l/ha). The fight against apple red mite (Panonychus ulmi Koch) can be obtained the expected result by timely agro-technical measures in late autumn and early spring, the use of low-toxic chemicals for the environment, and beneficial insects during the growing season.
In the conditions of Tashkent and Samarkand provinces of Uzbekistan, autumn moth (Agrotis segetum Den. Et Sshiff) is one of the most common pests in irrigated agricultural areas. The worms of this pest damage hundreds of crops belonging to 34 families and infect cotton, alfalfa, sugar beet, corn, cereals, legumes, oilseeds and vegetables, melons and potatoes, as well as ivy, wild coconut, sorghum, and oats. Autumn nocturnal worms pierce the seed pods, damaging the root collar of young sprouting crops. The developmental characteristics of underground pests of potatoes planted in the post-grain recurrence period were studied, their bioecology according to the characteristics of damage to various crops.
This article provides information on the influence of biotic and abiotic factors on the development of the population of orchard agrobiocenosis of woolly apple aphid (Eriosoma lanigerum Hausm), the main sucking pest of seed orchards.
In the article, researches on the monitoring of the main species of (acariformes tetranychidae) in seedfruit gardens and their occurrence levels were conducted. According to the research, a total of 6 types of mites were involved from the tetranychidae family of the class of ticks in the seed-fruit trees (apple, pear, quince).Of these, 3 species were identified as the most harmful and volatile species. In seed-fruit gardens, apple red mite, gray fruit mite, and common cariformes: tetranychidae have been observed to damage leaves, young branches, and fruits of trees to a high degree. It was represented by cold beating of the branches of damaged trees, shedding of leaves and the appearance of various spots on the fruit.
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