Evaluation of host resistance and fungicide application as tools for the management of root rot of field pea caused by Aphanomyces euteiches
Aphanomyces root rot (ARR) of field pea (Pisum sativum), caused by Aphanomyces euteiches, can cause severe root damage, wilting, and large yield losses under wet soil conditions. To identify ways to manage this disease, the effect of A. euteiches inoculum density on field pea was studied under green...
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| Format: | Article |
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KeAi Communications Co., Ltd.
2019-02-01
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| Series: | Crop Journal |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214514118301016 |
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| author | Longfei Wu Kan-Fa Chang Sheau-Fang Hwang Robert Conner Rudolph Fredua-Agyeman David Feindel Stephen E. Strelkov |
| author_facet | Longfei Wu Kan-Fa Chang Sheau-Fang Hwang Robert Conner Rudolph Fredua-Agyeman David Feindel Stephen E. Strelkov |
| author_sort | Longfei Wu |
| collection | DOAJ |
| description | Aphanomyces root rot (ARR) of field pea (Pisum sativum), caused by Aphanomyces euteiches, can cause severe root damage, wilting, and large yield losses under wet soil conditions. To identify ways to manage this disease, the effect of A. euteiches inoculum density on field pea was studied under greenhouse and field conditions in 2015 and 2016. Increases in inoculum density reduced seedling emergence, root nodulation, and plant vigor, and resulted in increased root rot severity in both field and greenhouse tests. Seed treatments with the fungicides Apron Advance (thiabendazole + fludioxonil + metalaxyl) + Vibrance (difenoconazole + metalaxyl-M + sedaxane), INTEGO Solo (ethaboxam), BAS 516F (boscalid + pyraclostrobin), BAS 720F (metalaxyl + pyraclostrobin + fluxapyroxad), and BAS 516F + BAS 720F (3:1) were evaluated for their efficacy against ARR. All seed treatments except Apron Advance + Vibrance reduced root rot severity under controlled conditions. BAS 516F, BAS 720F and INTEGO Solo improved plant vigor and all treatments reduced seedling blight to varying degrees under greenhouse conditions, but not in the field. A collection of 22 pea genotypes was evaluated for resistance to root rot in field plot experiments. Line 00–2067 showed the least severe root rot symptoms, whereas ‘Spring D’ showed the lowest reduction in yield. The results suggest that there may be an opportunity to combine partial host resistance and fungicidal seed treatments to adequately manage ARR of field pea. Keywords: Aphanomyces euteiches, Field pea, Fungicides, Inoculum density, Resistance |
| first_indexed | 2024-12-13T23:36:53Z |
| format | Article |
| id | doaj.art-265d964e3cbb4591be769cf94f698df0 |
| institution | Directory Open Access Journal |
| issn | 2214-5141 |
| language | English |
| last_indexed | 2024-12-13T23:36:53Z |
| publishDate | 2019-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Crop Journal |
| spelling | doaj.art-265d964e3cbb4591be769cf94f698df02022-12-21T23:27:16ZengKeAi Communications Co., Ltd.Crop Journal2214-51412019-02-01713848Evaluation of host resistance and fungicide application as tools for the management of root rot of field pea caused by Aphanomyces euteichesLongfei Wu0Kan-Fa Chang1Sheau-Fang Hwang2Robert Conner3Rudolph Fredua-Agyeman4David Feindel5Stephen E. Strelkov6Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, CanadaCrop Diversification Centre North, Alberta Agriculture and Forestry, Edmonton, AB T5Y 6H3, CanadaCrop Diversification Centre North, Alberta Agriculture and Forestry, Edmonton, AB T5Y 6H3, Canada; Corresponding authors.Agriculture and Agri-Food Canada, Morden Research and Development Centre, Morden, Manitoba R6M 1Y5, CanadaCrop Diversification Centre North, Alberta Agriculture and Forestry, Edmonton, AB T5Y 6H3, CanadaCrop Diversification Centre North, Alberta Agriculture and Forestry, Edmonton, AB T5Y 6H3, CanadaDepartment of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; Corresponding authors.Aphanomyces root rot (ARR) of field pea (Pisum sativum), caused by Aphanomyces euteiches, can cause severe root damage, wilting, and large yield losses under wet soil conditions. To identify ways to manage this disease, the effect of A. euteiches inoculum density on field pea was studied under greenhouse and field conditions in 2015 and 2016. Increases in inoculum density reduced seedling emergence, root nodulation, and plant vigor, and resulted in increased root rot severity in both field and greenhouse tests. Seed treatments with the fungicides Apron Advance (thiabendazole + fludioxonil + metalaxyl) + Vibrance (difenoconazole + metalaxyl-M + sedaxane), INTEGO Solo (ethaboxam), BAS 516F (boscalid + pyraclostrobin), BAS 720F (metalaxyl + pyraclostrobin + fluxapyroxad), and BAS 516F + BAS 720F (3:1) were evaluated for their efficacy against ARR. All seed treatments except Apron Advance + Vibrance reduced root rot severity under controlled conditions. BAS 516F, BAS 720F and INTEGO Solo improved plant vigor and all treatments reduced seedling blight to varying degrees under greenhouse conditions, but not in the field. A collection of 22 pea genotypes was evaluated for resistance to root rot in field plot experiments. Line 00–2067 showed the least severe root rot symptoms, whereas ‘Spring D’ showed the lowest reduction in yield. The results suggest that there may be an opportunity to combine partial host resistance and fungicidal seed treatments to adequately manage ARR of field pea. Keywords: Aphanomyces euteiches, Field pea, Fungicides, Inoculum density, Resistancehttp://www.sciencedirect.com/science/article/pii/S2214514118301016 |
| spellingShingle | Longfei Wu Kan-Fa Chang Sheau-Fang Hwang Robert Conner Rudolph Fredua-Agyeman David Feindel Stephen E. Strelkov Evaluation of host resistance and fungicide application as tools for the management of root rot of field pea caused by Aphanomyces euteiches Crop Journal |
| title | Evaluation of host resistance and fungicide application as tools for the management of root rot of field pea caused by Aphanomyces euteiches |
| title_full | Evaluation of host resistance and fungicide application as tools for the management of root rot of field pea caused by Aphanomyces euteiches |
| title_fullStr | Evaluation of host resistance and fungicide application as tools for the management of root rot of field pea caused by Aphanomyces euteiches |
| title_full_unstemmed | Evaluation of host resistance and fungicide application as tools for the management of root rot of field pea caused by Aphanomyces euteiches |
| title_short | Evaluation of host resistance and fungicide application as tools for the management of root rot of field pea caused by Aphanomyces euteiches |
| title_sort | evaluation of host resistance and fungicide application as tools for the management of root rot of field pea caused by aphanomyces euteiches |
| url | http://www.sciencedirect.com/science/article/pii/S2214514118301016 |
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