Effect of seed treatment on early season brown spot caused by Septoria glycines of soybean

Jean C. Batzer; Yuba R. Kandel; Carl A. Bradley; Martin I. Chilvers; Albert U. Tenuta; Kiersten A. Wise; Edward Hernández; Daren S. Mueller

doi:10.1094/PHP-RS-16-0035

Effect of seed treatment on early season brown spot caused by Septoria glycines of soybean

Jean C. Batzer, Yuba R. Kandel, Carl A. Bradley, Martin I. Chilvers, Albert U. Tenuta, Kiersten A. Wise, Edward Hernández, Daren S. Mueller

Plant Pathology

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Early season brown spot caused by Septoria glycines was compared in Illinois, Indiana, Iowa, Michigan, and Ontario, Canada, soybean fields planted with differing commercial seed treatments. Seed treatments that included fluopyram significantly reduced brown spot (P < 0.001). A greenhouse mist chamber experiment revealed that fluopyram seed treatment reduced the Area Under Disease Progress Curve of brown spot over a 6-week period (P < 0.001). Brown spot severity was unaffected by plant age at inoculation for the control treatment without fluopyram (P = 0.911); however, severity increased with plant age at inoculation for the fluopyram treatment (P = 0.009). The sensitivity of two S. glycines isolates to fluopyram was assessed by determining the effective concentration required to reduce its colony diameter growth in culture by 50% (EC₅₀). Both isolates had an EC₅₀ of 0.41 μg/ml of fluopyram. These results demonstrate that fluopyram seed treatment is effecttive at controlling early season brown spot in soybean.

Original language	English
Pages (from-to)	223-228
Number of pages	6
Journal	Plant Health Progress
Volume	17
Issue number	4
DOIs	https://doi.org/10.1094/PHP-RS-16-0035
State	Published - 2016

Bibliographical note

Funding Information:
The study was partially funded by Bayer CropScience and soybean checkoff programs through the North Central Soybean Research Program in the United States. The Grain Farmers of Ontario, Canada also provided funding obtained through the Ontario Farm Innovation Program (OFIP), which is a component of Growing Forward 2. We would also like to thank D. Sjarpe, G. Watson, and S. Wiggs from Iowa State University; J. Ravellette, N. Anderson, A. Ramirez, J. Solis, K. Raun, J. Leuck from Purdue University; K. Ames and J. Weems from University of Illinois; A. M. Byrne, J. F. Boyse, and R. G. Laurenz from Michigan State University; C. Van Herk and G. Kotulak from Ontario Ministry of Agriculture Food and Rural Affairs for trial establishment, maintenance and data collection; and Michael McCarville from Bayer Crop Science for providing treated seed and suggestions on early drafts of the manuscript.

Publisher Copyright:
© 2018.

ASJC Scopus subject areas

Plant Science
Horticulture

Access to Document

10.1094/PHP-RS-16-0035

Cite this

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title = "Effect of seed treatment on early season brown spot caused by Septoria glycines of soybean",

abstract = "Early season brown spot caused by Septoria glycines was compared in Illinois, Indiana, Iowa, Michigan, and Ontario, Canada, soybean fields planted with differing commercial seed treatments. Seed treatments that included fluopyram significantly reduced brown spot (P < 0.001). A greenhouse mist chamber experiment revealed that fluopyram seed treatment reduced the Area Under Disease Progress Curve of brown spot over a 6-week period (P < 0.001). Brown spot severity was unaffected by plant age at inoculation for the control treatment without fluopyram (P = 0.911); however, severity increased with plant age at inoculation for the fluopyram treatment (P = 0.009). The sensitivity of two S. glycines isolates to fluopyram was assessed by determining the effective concentration required to reduce its colony diameter growth in culture by 50% (EC50). Both isolates had an EC50 of 0.41 μg/ml of fluopyram. These results demonstrate that fluopyram seed treatment is effecttive at controlling early season brown spot in soybean.",

author = "Batzer, {Jean C.} and Kandel, {Yuba R.} and Bradley, {Carl A.} and Chilvers, {Martin I.} and Tenuta, {Albert U.} and Wise, {Kiersten A.} and Edward Hern{\'a}ndez and Mueller, {Daren S.}",

note = "Funding Information: The study was partially funded by Bayer CropScience and soybean checkoff programs through the North Central Soybean Research Program in the United States. The Grain Farmers of Ontario, Canada also provided funding obtained through the Ontario Farm Innovation Program (OFIP), which is a component of Growing Forward 2. We would also like to thank D. Sjarpe, G. Watson, and S. Wiggs from Iowa State University; J. Ravellette, N. Anderson, A. Ramirez, J. Solis, K. Raun, J. Leuck from Purdue University; K. Ames and J. Weems from University of Illinois; A. M. Byrne, J. F. Boyse, and R. G. Laurenz from Michigan State University; C. Van Herk and G. Kotulak from Ontario Ministry of Agriculture Food and Rural Affairs for trial establishment, maintenance and data collection; and Michael McCarville from Bayer Crop Science for providing treated seed and suggestions on early drafts of the manuscript. Publisher Copyright: {\textcopyright} 2018.",

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AU - Kandel, Yuba R.

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AU - Tenuta, Albert U.

AU - Wise, Kiersten A.

AU - Hernández, Edward

AU - Mueller, Daren S.

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PY - 2016

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N2 - Early season brown spot caused by Septoria glycines was compared in Illinois, Indiana, Iowa, Michigan, and Ontario, Canada, soybean fields planted with differing commercial seed treatments. Seed treatments that included fluopyram significantly reduced brown spot (P < 0.001). A greenhouse mist chamber experiment revealed that fluopyram seed treatment reduced the Area Under Disease Progress Curve of brown spot over a 6-week period (P < 0.001). Brown spot severity was unaffected by plant age at inoculation for the control treatment without fluopyram (P = 0.911); however, severity increased with plant age at inoculation for the fluopyram treatment (P = 0.009). The sensitivity of two S. glycines isolates to fluopyram was assessed by determining the effective concentration required to reduce its colony diameter growth in culture by 50% (EC50). Both isolates had an EC50 of 0.41 μg/ml of fluopyram. These results demonstrate that fluopyram seed treatment is effecttive at controlling early season brown spot in soybean.

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Effect of seed treatment on early season brown spot caused by Septoria glycines of soybean

Abstract

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