Forecasting the seasonal phenology of Agrotis ipsilon in Oregon grass seed and vegetable agroecosystems
Agrotis ipsilon (Lepidoptera: Noctuidae) is a significant pest in Oregon grass seed and vegetable production systems. Effective management of this species relies on timely foliar insecticide applications targeting immature A. ipsilon larvae before crop damage is observed. Regionally specific phenolo...
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Frontiers Media S.A.
2025-01-01
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| Series: | Frontiers in Insect Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/finsc.2024.1505524/full |
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| author | Emma Slone Jessica Green Navneet Kaur Darrin L. Walenta Nicole P. Anderson Casey Cruse Seth J. Dorman Seth J. Dorman |
| author_facet | Emma Slone Jessica Green Navneet Kaur Darrin L. Walenta Nicole P. Anderson Casey Cruse Seth J. Dorman Seth J. Dorman |
| author_sort | Emma Slone |
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| description | Agrotis ipsilon (Lepidoptera: Noctuidae) is a significant pest in Oregon grass seed and vegetable production systems. Effective management of this species relies on timely foliar insecticide applications targeting immature A. ipsilon larvae before crop damage is observed. Regionally specific phenological models serve as a critical component of effective areawide pest management plans to inform the timing of pest monitoring and management action. Seasonal modeling of A. ipsilon phenology is complicated by their migratory behavior and limited knowledge of temperature-dependent development on affected crop hosts. Growth chamber experiments at five constant temperatures (12 to 32°C) were conducted to determine the temperature-dependent development of A. ispsilon life stages on an artificial and perennial ryegrass diet. The completion of one A. ipsilon generation (egg-to-adult) required 658.71 ± 31.49, 601.98 ± 16.01, 648.47 ± 21.35 degree days with a base temperature threshold of 9.8°C for artificial diet, perennial ryegrass diet, and across both diet types, respectively. The timing of migrant adults was predicted with surface air temperature using non-linear regression with A. ipsilon abundance data collected from pheromone-baited traps in 77 total commercial grass seed (n = 57) and vegetable (n = 20) production fields across 19 sampling years (1996 to 2023). Developmental parameters and predictions of adult arrival were used to develop general and grass seed specific phenology model projections for A. ipsilon populations in Oregon. Regionally validated phenology models can be incorporated into decision support tools to forecast the spatiotemporal occurrence of crop-damaging life stages of priority insect pests. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-01-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Insect Science |
| spelling | doaj-art-83aa4dd19b054819adcee370f30624782025-01-17T06:50:59ZengFrontiers Media S.A.Frontiers in Insect Science2673-86002025-01-01410.3389/finsc.2024.15055241505524Forecasting the seasonal phenology of Agrotis ipsilon in Oregon grass seed and vegetable agroecosystemsEmma Slone0Jessica Green1Navneet Kaur2Darrin L. Walenta3Nicole P. Anderson4Casey Cruse5Seth J. Dorman6Seth J. Dorman7USDA-ARS, Forage Seed and Cereal Research Unit, Corvallis, OR, United StatesDepartment of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR, United StatesDepartment of Crop and Soil Science, Oregon State University, Corvallis, OR, United StatesDepartment of Crop and Soil Science, Oregon State University, Corvallis, OR, United StatesDivision of Food Production and Society, Norwegian Institute of Bioeconomy Research (NIBIO), Ås, NorwayUSDA-ARS, Forage Seed and Cereal Research Unit, Corvallis, OR, United StatesUSDA-ARS, Forage Seed and Cereal Research Unit, Corvallis, OR, United StatesDepartment of Crop and Soil Science, Oregon State University, Corvallis, OR, United StatesAgrotis ipsilon (Lepidoptera: Noctuidae) is a significant pest in Oregon grass seed and vegetable production systems. Effective management of this species relies on timely foliar insecticide applications targeting immature A. ipsilon larvae before crop damage is observed. Regionally specific phenological models serve as a critical component of effective areawide pest management plans to inform the timing of pest monitoring and management action. Seasonal modeling of A. ipsilon phenology is complicated by their migratory behavior and limited knowledge of temperature-dependent development on affected crop hosts. Growth chamber experiments at five constant temperatures (12 to 32°C) were conducted to determine the temperature-dependent development of A. ispsilon life stages on an artificial and perennial ryegrass diet. The completion of one A. ipsilon generation (egg-to-adult) required 658.71 ± 31.49, 601.98 ± 16.01, 648.47 ± 21.35 degree days with a base temperature threshold of 9.8°C for artificial diet, perennial ryegrass diet, and across both diet types, respectively. The timing of migrant adults was predicted with surface air temperature using non-linear regression with A. ipsilon abundance data collected from pheromone-baited traps in 77 total commercial grass seed (n = 57) and vegetable (n = 20) production fields across 19 sampling years (1996 to 2023). Developmental parameters and predictions of adult arrival were used to develop general and grass seed specific phenology model projections for A. ipsilon populations in Oregon. Regionally validated phenology models can be incorporated into decision support tools to forecast the spatiotemporal occurrence of crop-damaging life stages of priority insect pests.https://www.frontiersin.org/articles/10.3389/finsc.2024.1505524/fullblack cutwormlolium perennepest forecastsphenological modelingtemperaturedependent development |
| spellingShingle | Emma Slone Jessica Green Navneet Kaur Darrin L. Walenta Nicole P. Anderson Casey Cruse Seth J. Dorman Seth J. Dorman Forecasting the seasonal phenology of Agrotis ipsilon in Oregon grass seed and vegetable agroecosystems Frontiers in Insect Science black cutworm lolium perenne pest forecasts phenological modeling temperaturedependent development |
| title | Forecasting the seasonal phenology of Agrotis ipsilon in Oregon grass seed and vegetable agroecosystems |
| title_full | Forecasting the seasonal phenology of Agrotis ipsilon in Oregon grass seed and vegetable agroecosystems |
| title_fullStr | Forecasting the seasonal phenology of Agrotis ipsilon in Oregon grass seed and vegetable agroecosystems |
| title_full_unstemmed | Forecasting the seasonal phenology of Agrotis ipsilon in Oregon grass seed and vegetable agroecosystems |
| title_short | Forecasting the seasonal phenology of Agrotis ipsilon in Oregon grass seed and vegetable agroecosystems |
| title_sort | forecasting the seasonal phenology of agrotis ipsilon in oregon grass seed and vegetable agroecosystems |
| topic | black cutworm lolium perenne pest forecasts phenological modeling temperaturedependent development |
| url | https://www.frontiersin.org/articles/10.3389/finsc.2024.1505524/full |
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