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Article
Effect of Glyphosate Application on Sudden Death Syndrome of Glyphosate-Resistant Soybean Under Field Conditions
Plant Disease
  • Yuba R. Kandel, Iowa State University
  • Carl A. Bradley, University of Illinois at Urbana-Champaign
  • Kiersten A. Wise, Purdue University
  • Martin I. Chilvers, Michigan State University
  • Albert U. Tenuta, Ontario Ministry of Agriculture and Food
  • Vince M. Davis, University of Wisconsin-Madison
  • Paul D. Esker, University of Costa Rica
  • Damon L. Smith, University of Wisconsin-Madison
  • Mark A. Licht, Iowa State University
  • Daren S. Mueller, Iowa State University
Document Type
Article
Publication Version
Published Version
Publication Date
3-1-2015
DOI
10.1094/PDIS-06-14-0577-RE
Abstract

Sudden death syndrome (SDS), caused by Fusarium virguliforme, is an important yield limiting disease of soybean. Glyphosate is used to control weeds in soybean; however, its effect on SDS is not clearly understood. The objective of this study was to examine the impact of glyphosate on SDS, yield, and plant nutrition under field conditions. Fourteen field experiments were conducted in Iowa, Illinois, Indiana, Michigan, Wisconsin, and Ontario, Canada during 2011 to 2013. The experiment consisted of six treatment combinations of glyphosate and herbicides not containing glyphosate. Disease index was significantly different across the location–years, ranging from 0 to 65. The highest disease was noted in locations with irrigation, indicating that high soil moisture favors development of SDS. There were no effects of herbicide treatments or interactions on disease. The foliar disease index among the treatments over all years ranged from 9 to 13. Glyphosate-treatments also tended to yield more than treatments of herbicides not containing glyphosate. There were no interactions between glyphosate-treatments and total manganese in plant tissue. The interaction of glyphosate with other nutrients in plant tissue was inconclusive. This 14 location–year study demonstrated that glyphosate application did not increase SDS severity or adversely affect soybean yield under field conditions.

Comments

This article is published as Kandel, Y. R., Bradley, C. A., Wise, K. A., Chilvers, M. I., Tenuta, A. U., Davis, V. M., Esker, P. D., Smith, D. L., Licht, M. A., and Mueller, D. S. 2015. Effect of glyphosate application on sudden death syndrome of glyphosate-resistant soybean under field conditions. Plant Dis. 99:347-354. doi: 10.1094/PDIS-06-14-0577-RE. Posted with permission.

Copyright Owner
The American Phytopathological Society
Language
en
File Format
application/pdf
Citation Information
Yuba R. Kandel, Carl A. Bradley, Kiersten A. Wise, Martin I. Chilvers, et al.. "Effect of Glyphosate Application on Sudden Death Syndrome of Glyphosate-Resistant Soybean Under Field Conditions" Plant Disease Vol. 99 Iss. 3 (2015) p. 347 - 354
Available at: http://works.bepress.com/mark-licht/57/