Abstract
A three-year study was conducted in Illinois, Indiana, Iowa, Michigan, and Ontario, Canada, from 2013 through 2015 to determine the effect of soybean (Glycine max) cultivars’ source of soybean cyst nematode (SCN; Heterodera glycines) resistance on SCN population densities, sudden death syndrome (SDS; caused by Fusarium virguliforme), and yield of soybean. Five cultivars were evaluated with and without fluopyram seed treatment at each location. Cultivars with no SCN resistance had greater SDS severity, greater postharvest SCN egg counts (Pf), and lower yield than cultivars with plant introduction (PI) 548402 (Peking) and PI 88788-type of SCN resistance (P < 0.05). Cultivars with Peking-type resistance had lower Pf than those with PI 888788-type and no SCN resistance. In two locations with HG type 1.2-, cultivars with Peking-type resistance had greater foliar disease index (FDX) than cultivars with PI 88788-type. Fluopyram seed treatment reduced SDS and improved yield compared with a base seed treatment but did not affect SCN reproduction and Pf (P > 0.05). FDX and Pf were positively correlated in all three years (P < 0.01). Our results indicate that SDS severity may be influenced by SCN population density and HG type, which are important to consider when selecting cultivars for SCN management.
| Original language | English |
|---|---|
| Pages (from-to) | 2137-2143 |
| Number of pages | 7 |
| Journal | Plant Disease |
| Volume | 101 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 2017 |
Bibliographical note
Publisher Copyright:© 2017 The American Phytopathological Society.
Funding
Partial funding for this study was provided by Bayer CropScience and soybean checkoff through the North Central Soybean Research Program in the United States, and the Grain Farmers of Ontario in Canada, which was funded through Ontario Farm Innovation Program, a component of Growing Forward 2. We thank D. Sjarpe, A. Haafke, and G. Han from Iowa State University; N. Anderson, J. Leuck, and J. Ravellette from Purdue University; K. Ames from the University of Illinois; F. Warner, J. F. Boyse, and R. Laurenz from Michigan State University; C. Van Herk and G. Kotulak from Ontario Ministry of Agriculture Food and Rural Affairs for their assistance with trial establishment, maintenance, and data collection. We would also like to thank J. Batzer and G. Tylka for reviewing this manuscript. Partial funding for this study was provided by Bayer CropScience and soybean checkoff through the North Central Soybean Research Program in the United States, and the Grain Farmers of Ontario in Canada, which was funded through Ontario Farm Innovation Program, a component of Growing Forward 2. We thank D. Sjarpe, A. Haafke, and G. Han from Iowa State University; N. Anderson, J. Leuck, and J. Ravellette from Purdue University; K. Ames from the University of Illinois; F.Warner, J. F. Boyse, and R. Laurenz fromMichigan State University; C.Van Herk and G. Kotulak from Ontario Ministry of Agriculture Food and Rural Affairs for their assistance with trial establishment, maintenance, and data collection.We would also like to thank J. Batzer and G. Tylka for reviewing this manuscript.
| Funders | Funder number |
|---|---|
| Ontario Farm Innovation Program | |
| Bayer CropScience GmbH | |
| Iowa State University | |
| Grain Farmers of Ontario |
ASJC Scopus subject areas
- Agronomy and Crop Science
- Plant Science