The more it heats up, the more eggs it lays... Hurry up with the control of the "apple speckled mite"

Published 2025년 8월 19일

Tridge summary

[Korean Farmers' Newspaper, Reporter Kim Young-min] With the ongoing high temperatures, there is concern about the spread of apple spider mites. Given that spider mites lay more eggs at higher temperatures, the importance of timely control measures is increasing. According to a survey conducted by the National Institute of Horticultural and Herbal Science at the end of July in 24 farms across 8 apple production areas in Gyeongbuk Yeongju, Gyeongnam Geochang, Jeonbuk Jangsu, and other regions, spider mites were confirmed in 1 out of 3 (33.3%) of the targeted orchards. The average occurrence density reached 29.4 mites per 100 leaves. Compared to the same period last year, 25% of the apple orchards had spider mites, with an average density of 4 mites.

Original content

As of the end of July, 33% of orchards were affected. The average density is 7.4 times higher than last year. Concerns are rising over the spread of apple spider mites as high temperatures persist. Given that spider mites lay eggs at a higher rate and degree in high temperatures, the importance of timely control measures is increasing. According to a survey conducted by the National Institute of Horticultural and Herbal Science on 24 farms in 8 apple-producing regions including Gyeongju in North Gyeongsang Province, Goryeong in South Gyeongsang Province, and Jangsu in North Jeolla Province, as of the end of July, it was confirmed that 1 out of 3 (33.3%) of the targeted orchards were affected. The average occurrence density reached 29.4 mites per 100 leaves. Compared to the same period last year, when 25% of apple orchards were affected by spider mites and the average density was 4 mites, this year's affected orchards are 8.3 percentage points higher, and the average density is 7.4 ...
Source: Agrinet

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