Two-Year Survey of Botrytis Fruit Rot Levels in Commercial Strawberry Fields in California with and without Fungicide Applications
ABSTRACTBotrytis fruit rot (BFR) causes significant losses in-field and postharvest in strawberries and is mainly managed by fungicides. Strategically applying fungicides only during wet and cool periods would reduce fungicide resistance development and grower costs. A survey of BFR levels in field-...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2024-12-01
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| Series: | International Journal of Fruit Science |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/15538362.2024.2302578 |
| _version_ | 1797352441480478720 |
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| author | Yu-Chen Wang Shashika S. Hewavitharana Gerald J. Holmes |
| author_facet | Yu-Chen Wang Shashika S. Hewavitharana Gerald J. Holmes |
| author_sort | Yu-Chen Wang |
| collection | DOAJ |
| description | ABSTRACTBotrytis fruit rot (BFR) causes significant losses in-field and postharvest in strawberries and is mainly managed by fungicides. Strategically applying fungicides only during wet and cool periods would reduce fungicide resistance development and grower costs. A survey of BFR levels in field-grown strawberries with and without fungicide applications was conducted in Santa Maria, California. Weather data were collected to calculate the BFR risk factor using Florida’s Strawberry Advisory System (StAS). There were no significant differences between fungicide and no-fungicide treatments for in-field and postharvest BFR incidence in 2021 and in-field BFR incidence in 2022, while the no-fungicide treatment showed higher postharvest BFR incidence in 2022. Average in-field BFR incidence for fungicide and no-fungicide treatments was 2.6% and 2.5% for 2021 and 3.0% and 3.7% for 2022. Average postharvest BFR incidence for fungicide and no-fungicide treatments was 1.8% and 2.0% for 2021 and 0.6% and 1.5% for 2022. BFR risk factor was significantly associated with BFR incidence in 2021, but not in 2022. StAS predicted a 50% and 44% fungicide application reduction in 2021 and 2022 compared to grower standard treatments. These results indicate the potential of reducing fungicide use without compromising BFR control in California strawberry production. |
| first_indexed | 2024-03-08T13:15:38Z |
| format | Article |
| id | doaj.art-af259df660e14c78ab5d80607e8aee20 |
| institution | Directory Open Access Journal |
| issn | 1553-8362 1553-8621 |
| language | English |
| last_indexed | 2024-03-08T13:15:38Z |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Fruit Science |
| spelling | doaj.art-af259df660e14c78ab5d80607e8aee202024-01-18T07:08:41ZengTaylor & Francis GroupInternational Journal of Fruit Science1553-83621553-86212024-12-01241456010.1080/15538362.2024.2302578Two-Year Survey of Botrytis Fruit Rot Levels in Commercial Strawberry Fields in California with and without Fungicide ApplicationsYu-Chen Wang0Shashika S. Hewavitharana1Gerald J. Holmes2Strawberry Center, California Polytechnic State University, San Luis Obispo, California, USAStrawberry Center, California Polytechnic State University, San Luis Obispo, California, USAStrawberry Center, California Polytechnic State University, San Luis Obispo, California, USAABSTRACTBotrytis fruit rot (BFR) causes significant losses in-field and postharvest in strawberries and is mainly managed by fungicides. Strategically applying fungicides only during wet and cool periods would reduce fungicide resistance development and grower costs. A survey of BFR levels in field-grown strawberries with and without fungicide applications was conducted in Santa Maria, California. Weather data were collected to calculate the BFR risk factor using Florida’s Strawberry Advisory System (StAS). There were no significant differences between fungicide and no-fungicide treatments for in-field and postharvest BFR incidence in 2021 and in-field BFR incidence in 2022, while the no-fungicide treatment showed higher postharvest BFR incidence in 2022. Average in-field BFR incidence for fungicide and no-fungicide treatments was 2.6% and 2.5% for 2021 and 3.0% and 3.7% for 2022. Average postharvest BFR incidence for fungicide and no-fungicide treatments was 1.8% and 2.0% for 2021 and 0.6% and 1.5% for 2022. BFR risk factor was significantly associated with BFR incidence in 2021, but not in 2022. StAS predicted a 50% and 44% fungicide application reduction in 2021 and 2022 compared to grower standard treatments. These results indicate the potential of reducing fungicide use without compromising BFR control in California strawberry production.https://www.tandfonline.com/doi/10.1080/15538362.2024.2302578Reduce fungicide usedisease forecastingepidemiologyleaf wetnessfungicide resistance management |
| spellingShingle | Yu-Chen Wang Shashika S. Hewavitharana Gerald J. Holmes Two-Year Survey of Botrytis Fruit Rot Levels in Commercial Strawberry Fields in California with and without Fungicide Applications International Journal of Fruit Science Reduce fungicide use disease forecasting epidemiology leaf wetness fungicide resistance management |
| title | Two-Year Survey of Botrytis Fruit Rot Levels in Commercial Strawberry Fields in California with and without Fungicide Applications |
| title_full | Two-Year Survey of Botrytis Fruit Rot Levels in Commercial Strawberry Fields in California with and without Fungicide Applications |
| title_fullStr | Two-Year Survey of Botrytis Fruit Rot Levels in Commercial Strawberry Fields in California with and without Fungicide Applications |
| title_full_unstemmed | Two-Year Survey of Botrytis Fruit Rot Levels in Commercial Strawberry Fields in California with and without Fungicide Applications |
| title_short | Two-Year Survey of Botrytis Fruit Rot Levels in Commercial Strawberry Fields in California with and without Fungicide Applications |
| title_sort | two year survey of botrytis fruit rot levels in commercial strawberry fields in california with and without fungicide applications |
| topic | Reduce fungicide use disease forecasting epidemiology leaf wetness fungicide resistance management |
| url | https://www.tandfonline.com/doi/10.1080/15538362.2024.2302578 |
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