Kim Junheon, Jung Seongchae, Kim Young Un
Forest Entomology and Pathology Division, National Institute of Forest Science, Seoul 02455, Republic of Korea.
AD Corporation, Andong 36729, Republic of Korea.
Insects. 2024 Jun 12;15(6):445. doi: 10.3390/insects15060445.
Chestnuts ( Siebold and Zucc.) are one of the major agroforestry products in Korea, and is a major pest of the chestnut fruit. Pheromone-based mating disruption (MD) has emerged as a promising eco-friendly approach to reduce population levels and ultimately mitigate fruit damage. Field trials were conducted over two years (2022-2023) in two commercial chestnut orchards in Central Korea that were infested with . Compared with the control treatment, the MD treatment effectively reduced the number of male captured in the MD treatment plots. Male catch inhibition (MCI) rates ranged from 70.5% to 82.7% in 2022 and from 87.8% to 95.1% in 2023. The MD efficacy (%) was calculated based on the total number of chestnut fruits collected and the number of fruits damaged by . In 2022, the MD efficacy of the single-dosage treatment (TS, 50 g/ha) was 63.9% in Orchard A and 73.6% in Orchard B. In 2023, the MD efficacies of the double-dosage treatment (TD, 100 g/ha) and the two-application treatment (TT, 50 g/ha in June and August) were 60.2% and 77.9% in Orchard A and 50.9% and 64.8% in Orchard B, respectively. This study confirms the efficacy of pheromone-based MD in reducing the numbers in chestnut orchards and damage to chestnut fruits.
栗实象（Siebold and Zucc.）是韩国主要的农林业产品害虫之一，对栗果造成严重危害。基于性信息素的交配干扰（MD）已成为一种有前景的环保方法，可降低害虫种群数量并最终减轻果实损害。在韩国中部两个受栗实象侵染的商业栗园进行了为期两年（2022 - 2023年）的田间试验。与对照处理相比，MD处理有效减少了MD处理地块中捕获的雄性栗实象数量。2022年雄性捕获抑制（MCI）率在70.5%至82.7%之间，2023年在87.8%至95.1%之间。MD效果（%）是根据收集的栗果总数和被栗实象损害的果实数量计算得出的。2022年，单剂量处理（TS，50克/公顷）在果园A的MD效果为63.9%，在果园B为73.6%。2023年，双剂量处理（TD，100克/公顷）和两次施用处理（TT，6月和8月各50克/公顷）在果园A的MD效果分别为60.2%和77.9%，在果园B分别为50.9%和64.8%。本研究证实了基于性信息素的MD在减少栗园栗实象数量和减轻栗果损害方面的效果。
