Optimizing Fungicide Seed Treatments for Early Foliar Disease Management in Wheat Under Northern Great Plains Conditions
Tan spot (<i>Pyrenophora tritici-repentis</i>) and stripe rust (<i>Puccinia striiformis</i> f. sp. <i>tritici</i>) are major foliar diseases of wheat, causing significant yield losses globally. This study evaluated the efficacy of fungicide seed treatments in mana...
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MDPI AG
2025-01-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/15/2/291 |
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| author | Collins Bugingo Shaukat Ali Dalitso Yabwalo Emmanuel Byamukama |
| author_facet | Collins Bugingo Shaukat Ali Dalitso Yabwalo Emmanuel Byamukama |
| author_sort | Collins Bugingo |
| collection | DOAJ |
| description | Tan spot (<i>Pyrenophora tritici-repentis</i>) and stripe rust (<i>Puccinia striiformis</i> f. sp. <i>tritici</i>) are major foliar diseases of wheat, causing significant yield losses globally. This study evaluated the efficacy of fungicide seed treatments in managing these diseases during early growth stages under greenhouse, growth chamber, and field conditions in the Northern Great Plains. Winter and spring wheat cultivars were treated with pyraclostrobin or combinations of thiamethoxam, difenoconazole, mefenoxam, fludioxonil, and sedaxane, among others. Greenhouse and growth chamber plants were inoculated with the respective pathogens, while field trials relied on natural inoculum. Fungicide treatments significantly reduced stripe rust severity (up to 36%) (<i>p</i> ≤ 0.05) and moderately reduced tan spot severity during early growth stages (15–20%). Treated plants demonstrated a 30–40% improvement in plant vigor, and a 25–50% increase in winter survival. Additionally, grain yield in treated plots increased by 25–50% (<i>p</i> ≤ 0.05), with test weight and protein content improving by 10% and 15%, respectively. These findings demonstrate the potential of fungicide seed treatments as an integrated pest (or pathogen) management (IPM) strategy to enhance early foliar disease control and wheat productivity. |
| format | Article |
| id | doaj-art-157ebee3c5b84ccbbc78a6f42464b4cf |
| institution | DOAJ |
| issn | 2073-4395 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Agronomy |
| spelling | doaj-art-157ebee3c5b84ccbbc78a6f42464b4cf2025-08-20T02:44:43ZengMDPI AGAgronomy2073-43952025-01-0115229110.3390/agronomy15020291Optimizing Fungicide Seed Treatments for Early Foliar Disease Management in Wheat Under Northern Great Plains ConditionsCollins Bugingo0Shaukat Ali1Dalitso Yabwalo2Emmanuel Byamukama3Crop and Soil Science Department, Oregon State University, Corvallis, OR 97377, USADepartment of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings, SD 57007, USADepartment of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings, SD 57007, USADepartment of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings, SD 57007, USATan spot (<i>Pyrenophora tritici-repentis</i>) and stripe rust (<i>Puccinia striiformis</i> f. sp. <i>tritici</i>) are major foliar diseases of wheat, causing significant yield losses globally. This study evaluated the efficacy of fungicide seed treatments in managing these diseases during early growth stages under greenhouse, growth chamber, and field conditions in the Northern Great Plains. Winter and spring wheat cultivars were treated with pyraclostrobin or combinations of thiamethoxam, difenoconazole, mefenoxam, fludioxonil, and sedaxane, among others. Greenhouse and growth chamber plants were inoculated with the respective pathogens, while field trials relied on natural inoculum. Fungicide treatments significantly reduced stripe rust severity (up to 36%) (<i>p</i> ≤ 0.05) and moderately reduced tan spot severity during early growth stages (15–20%). Treated plants demonstrated a 30–40% improvement in plant vigor, and a 25–50% increase in winter survival. Additionally, grain yield in treated plots increased by 25–50% (<i>p</i> ≤ 0.05), with test weight and protein content improving by 10% and 15%, respectively. These findings demonstrate the potential of fungicide seed treatments as an integrated pest (or pathogen) management (IPM) strategy to enhance early foliar disease control and wheat productivity.https://www.mdpi.com/2073-4395/15/2/291tan spotstripe rustseed treatmentwheatfungiearly foliar diseases |
| spellingShingle | Collins Bugingo Shaukat Ali Dalitso Yabwalo Emmanuel Byamukama Optimizing Fungicide Seed Treatments for Early Foliar Disease Management in Wheat Under Northern Great Plains Conditions Agronomy tan spot stripe rust seed treatment wheat fungi early foliar diseases |
| title | Optimizing Fungicide Seed Treatments for Early Foliar Disease Management in Wheat Under Northern Great Plains Conditions |
| title_full | Optimizing Fungicide Seed Treatments for Early Foliar Disease Management in Wheat Under Northern Great Plains Conditions |
| title_fullStr | Optimizing Fungicide Seed Treatments for Early Foliar Disease Management in Wheat Under Northern Great Plains Conditions |
| title_full_unstemmed | Optimizing Fungicide Seed Treatments for Early Foliar Disease Management in Wheat Under Northern Great Plains Conditions |
| title_short | Optimizing Fungicide Seed Treatments for Early Foliar Disease Management in Wheat Under Northern Great Plains Conditions |
| title_sort | optimizing fungicide seed treatments for early foliar disease management in wheat under northern great plains conditions |
| topic | tan spot stripe rust seed treatment wheat fungi early foliar diseases |
| url | https://www.mdpi.com/2073-4395/15/2/291 |
| work_keys_str_mv | AT collinsbugingo optimizingfungicideseedtreatmentsforearlyfoliardiseasemanagementinwheatundernortherngreatplainsconditions AT shaukatali optimizingfungicideseedtreatmentsforearlyfoliardiseasemanagementinwheatundernortherngreatplainsconditions AT dalitsoyabwalo optimizingfungicideseedtreatmentsforearlyfoliardiseasemanagementinwheatundernortherngreatplainsconditions AT emmanuelbyamukama optimizingfungicideseedtreatmentsforearlyfoliardiseasemanagementinwheatundernortherngreatplainsconditions |