This article provides information on the damage caused by the apple red spider mite (Panonychus ulmi Koch) in apple orchards and methods of combating it. Apple red spider mite (Panonychus ulmi Koch) is the most dangerous pest of orchards and other crops in other European countries. This pest can kill more than half of the crops in some fields. It is said that spider mite kills 6-10% of the total crop in normal years, and even 14% in some years. The apple red spider mite (Panonychus ulmi Koch) is more dangerous and harmful than other spider mites. In the world, more than 150 species of spider mites are recorded as the main pests of crops. Microbiological biopreparations Bioslip BV (Beauveria bassiana) was found to be a microbiological biopreparation with a strong effect on arachnids that cause damage in seed orchards at the rate of 3.0 l/ha. The effect of microbiological biopreparations can be achieved on the third-seventh and fourteenth-twenty-first day. The Bioslip BV (Beauveria bassiana) 3.0 l/ha biopreparation and Bioslip BT (Bacillus thuringiensis) (toxin crystals in 1 g) (1.0 l/ha) biopreparations taken for the experiment were analyzed from the 3rd day of use. According to the results of the conducted research, in the variant where Bioslip BV (Beauveria bassiana) 3.0 l/ha biopreparation was used, the biological efficiency was 44.2% on the 3rd day after using the biopreparation, 72.3% on the 7th day, and 72.3% on the 14th day. 73.9% on the 21st day, and 60.2% on the 21st. Bioslip BT microbiological biopreparation (Bacillus thuringiensis) (toxin crystals in 1 g) (1.0 l/ha) 86.7% on the 3rd day, 85.8% on the 7th day, 88.9% on the 14th day, and on the 21st it was 87.5%.

No abstract

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.