20.500.12556/RUL-175193 The degree of damage caused by the sunflower moth (Homoeosoma nebulellum [Den. et Schiff.], 1775) to different sunflower varieties Velikost poškodb, ki jih povzroča sončični molj (Homoeosoma nebulellum [Den. et Schiff.], 1775) na različnih sortah sončnic The European sunflower moth (Homoeosoma nebulellum [Den. et Schiff.], 1775) is one of the earliest documented pests of sunflower. Traditionally considered a two-generation pest, the occurrence of a third generation is becoming more frequent in eastern and central Europe due to global warming. Between 2021 and 2023, we conducted a two-part study in northeastern Hungary: (1) pheromone traps were used at five locations to monitor swarming dynamics, and (2) field trials were carried out to assess larval damage on three sunflower varieties. We compared the susceptibility of the Kisvárdai landrace, the widely grown confectionery hybrid Jaguar, and the oilseed hybrid NK Neoma. Results confirm that the sunflower moth now consistently completes three generations in the region. We found substantial differences in varietal susceptibility: ‘Kisvárdai’ showed severe damage, while ‘Jaguar’ and especially ‘Neoma’ exhibited significantly higher resistance. According to our observations, hot and dry summer conditions–particularly low rainfall from July to September–strongly enhance the intensity of the third generation. Our results also support earlier findings that sunflower varieties with a phytomelanin layer in the pericarp are more resistant to larval damage. However, this feature alone does not provide complete protection. sunflower sunflower moth swarming dynamics achene damage sončnica sončnični molj dinamika rojenja poškodba rožk true false true Angleški jezik Slovenski jezik Članek v reviji 2025-10-21 09:52:18 2025-10-21 09:52:25 2025-12-07 03:51:59 0000-00-00 00:00:00 2025 0 0 8 str. no. 3 Vol. 121 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 63 1854-1941 10.14720/aas.2025.121.3.19706 254001667 View_of_The_Degree_of_Damage_Caused_by_the_Sunflower_Moth_(Homoeosoma_nebulellum_Den._et_Schiff.)_to_Different_Sunflower_Varieties.pdf View_of_The_Degree_of_Damage_Caused_by_the_Sunflower_Moth_(Homoeosoma_nebulellum_Den._et_Schiff.)_to_Different_Sunflower_Varieties.pdf 1 CD65758F8820E71D9D7BB0AA4D812DE2 6f48932d85462dd8e41bacc2cb114cfd224f83b47638079e81c8bdb62cc347f7 c57ce549-ae52-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=220509 https://journals.uni-lj.si/aas/article/view/19706/19020 1 9a10d161-ae52-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=220508 Biotehniška fakulteta Acta agriculturae Slovenica 0 0 0