This study evaluated the insecticidal effectiveness of eco-friendly crop protection agents against two major pests of spring onion (Allium fistulosum L.), Thrips tabaci and Spodoptera exigua. Four biopesticides—dill seed oil, paraffin oil, neem extract, and an anthraquinone (AQ) formulation— were compared to the chemical standard, carbosulfan. Both carbosulfan and dill seed oil achieved nearly 100% corrected mortality for both pests across all observation dates, with no significant difference between them (F5,45=441.88,p < 0.001). Paraffin oil and neem extract demonstrated moderate efficacy, resulting in approximately 31-33% mortality, while the AQ formulation had the lowest mortality rate at 3%. For Spodoptera exigua larvae, dill seed oil exhibited a delayed insecticidal effect: mortality was 0% at 1 day after treatment (DAT), increasing to 44.8% at 2 DAT and 51.7% at 3 DAT (F5,45=8.75,p < 0.001). Neem extract and paraffin oil also showed gradual increases in mortality, although these were not statistically significant. Overall, the findings suggest that dill seed oil is a promising eco-friendly alternative and provide valuable insights for developing pest- and growth stage-specific control measures within integrated pest management (IPM) programs for sustainable onion cultivation.

ABSTRACT
서 언
재료 및 방법
    1. 시험곤충
    2. 시험제제
    3. 파총채벌레 성충 실내검정
    4. 파밤나방 유충 실내검정
    5. 보정살충률
    6. 통계분석
결 과
    1. 파총채벌레 살충 효과 검정
    2. 파밤나방 유충에 대한 살충 효과
고 찰
적 요
ACKNOWLEDGMENTS
REFERENCES

• 한지원(국립원예특작과학원 파속채소연구센터) | JiWon Han (Allium Vegetable Research Center, National Institute of Horticultural and Herbal Science, Muan 58545, Korea)
• 최민선(국립원예특작과학원 파속채소연구센터) | Min-Seon Choi (Allium Vegetable Research Center, National Institute of Horticultural and Herbal Science, Muan 58545, Korea)
• 정효진(국립원예특작과학원 파속채소연구센터) | Hyo Jin Jung (Allium Vegetable Research Center, National Institute of Horticultural and Herbal Science, Muan 58545, Korea) Corresponding author
• 윤정범(국립원예특작과학원 원예특작환경과) | Jung-Beom Yoon (Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, Wanju 55365, Korea)