Hostname: page-component-848d4c4894-5nwft Total loading time: 0 Render date: 2024-05-08T09:12:16.286Z Has data issue: false hasContentIssue false
  • English
  • Français

Interactions between chemical herbicides and the candidate bioherbicide Microsphaeropsis amaranthi

Published online by Cambridge University Press:  20 January 2017

David A. Smith  and
Steven G. Hallett
David A. Smith
Affiliation:
Department of Botany and Plant Pathology, Purdue University, 915 West State Street, West Lafayette, IN 47907
Get access Rights & Permissions [Opens in a new window]

Abstract

The fungal plant pathogen Microsphaeropsis amaranthi is virulent against a number of key weeds in the Amaranthaceae, including common waterhemp, and is under investigation as a bioherbicide. Common waterhemp has become a key weed in midwestern crop production systems and is a good target for a bioherbicide that could be integrated into weed management systems. We investigated the direct effects of a range of chemical herbicides and adjuvants upon conidia of M. amaranthi and found that many herbicides and most adjuvants were strongly inhibitory to germination. On the other hand, M. amaranthi was compatible with a selection of postemergence herbicides commonly used in midwestern weed management systems, including carfentrazone, chloransulam, and imazethapyr. Most glyphosate products suppressed or abolished germination of M. amaranthi conidia, but by testing adjuvants commonly used in glyphosate products and technical-grade glyphosate salts, it was revealed that this inhibition was due to formulation additives and not the active ingredient. When glyphosate and conidia of M. amaranthi were sprayed onto common waterhemp seedlings, the herbicide predisposed plants to infection by M. amaranthi. When M. amaranthi was applied 1 to 3 d after glyphosate, the glyphosate rate required to control common waterhemp was reduced by half. Similar results were observed on clones propagated from a common waterhemp plant resistant to glyphosate. When M. amaranthi was applied to seedlings 2 d before glyphosate, the efficacy of the herbicide was reduced. These findings demonstrate that positive interactions between herbicides and M. amaranthi exist but reveal practical difficulties that may limit the integration of the strategy in the field.

Keywords

Microsphaeropsis amaranthi (Ell. & Barth.)common waterhemp, Amaranthus rudis Sauer, AMATABioherbicidecommon waterhempinteractionintegrated weed managementglyphosate
Type
Weed Management
Information
Weed Science , Volume 54 , Issue 3 , June 2006 , pp. 532 - 537
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

Altman, J., Neate, S., and Rovira, A. D. 1990. Herbicide-pathogen interactions and mycoherbicides as alternative strategies for weed control. Pages 240–259 in Hoagland, R. E. ed. Microbes and Microbial Products as Herbicides. ACS Symp. Ser. No. 439. Washington, D.C.: ACS Books.Google Scholar
Charudattan, R. 2001. Biological control of weeds by means of plant pathogens: significance for integrated weed management in modern agroecology. BioControl 46:229–260.Google Scholar
Christy, A. L., Herbst, K. A., Kostka, S. J., Mullen, J. P., and Carlson, P. S. 1993. Synergizing weed biocontrol agents with chemical herbicides. ACS Symp. Ser 524:87–100.Google Scholar
Cordes, J. C., Johnson, W. G., Scharf, P., and Smeda, R. J. 2004. Late-emerging common waterhemp (Amaranthus rudis) interference in conventional tillage corn. Weed Technol 18:999–1005.Google Scholar
Duke, S. O. 2005. Taking stock of herbicide-resistant crops ten years after introduction. Pest Manag. Sci 61:211–218.Google Scholar
Gomez, K. A. and Gomez, A. A. 1984. Statistical Procedures for Agricultural Research (2nd edition). New York: Wiley.Google Scholar
Greaves, M. P. and Sargent, J. A. 1986. Herbicide induced microbial invasion of plant roots. Weed Sci 34:(Suppl. 1). 50–53.CrossRefGoogle Scholar
Hallett, S. G. 2005. Where are the bioherbicides? Weed Sci 53:404–415.Google Scholar
Hartzler, R. G., Bruce, B., and Nordby, D. 2004. Effect of common waterhemp (Amaranthus rudis) emergence date on growth and fecundity in soybean. Weed Sci 52:242–245.Google Scholar
Hoagland, R. E. 1996. Chemical interactions with bioherbicides to improve efficacy. Weed Technol 10:651–674.Google Scholar
Léger, C., Hallett, S. G., and Watson, A. K. 2001. Performance of Colletotrichum dematium for the control of fireweed (Epilobium angustifolium) improved with formulation. Weed Technol 15:437–446.CrossRefGoogle Scholar
Lévesque, C. A. and Rahe, J. E. 1992. Herbicide interactions with fungal root pathogens, with special reference to glyphosate. Annu. Rev. Phytopathol 30:579–602.Google Scholar
Li, J. M., Smeda, R. J., Nelson, K. A., and Dayan, F. E. 2004. Physiological basis for resistance to diphenyl ether herbicides in common waterhemp (Amaranthus rudis). Weed Sci 52:333–338.CrossRefGoogle Scholar
Loux, M. M., Stachler, J. M., Johnson, W. G., Nice, G. R., and Bauman, T. T. 2005. Weed control guide for Ohio and Indiana. Columbus, OH: Ohio State University.Google Scholar
Mintz, A. S., Heiny, D. K., and Weidemann, G. J. 1992. Factors influencing the biocontrol of tumble pigweed (Amaranthus albus) with Aposphaeria amaranthi . Plant Dis 76:267–269.CrossRefGoogle Scholar
Ortiz-Ribbing, L. M. and Williams, M. M. III. 2006. Potential of Phomopsis amaranthicola and Microsphaeropsis amaranthi as bioherbicides for several weedy Amaranthus species. Crop Prot 25:39–46.Google Scholar
Patzoldt, W. L., Tranel, P. J., and Hager, A. G. 2002. Variable herbicide responses among Illinois waterhemp (Amaranthus rudis and A. tuberculatus) populations. Crop Prot 21:707–712.Google Scholar
Patzoldt, W. L., Tranel, P. J., and Hager, A. G. 2005. A waterhemp (Amaranthus tuberculatus) biotype with multiple resistance across three herbicide sites of action. Weed Sci 53:30–36.Google Scholar
Sharon, A., Amsellem, Z., and Gressel, J. 1992. Glyphosate suppression of an elicited defense response—increased susceptibility of Cassia obtusifolia to a mycoherbicide. Plant Physiol 98:654–659.CrossRefGoogle Scholar
Shoup, D. E., Al-Khatib, K., and Peterson, D. E. 2003. Common waterhemp (Amaranthus rudis) resistance to protoporphyrinogen oxidase-inhibiting herbicides. Weed Sci 51:145–150.Google Scholar
Singleton, L. L., Mihail, J. D., and Rush, C. M. eds. 1982. Methods for research on soilborne phytopathogenic fungi. St.: Paul: APS Press.Google Scholar
Smeda, R. J. 2000. Insensitivity of a common waterhemp population to glyphosate. Proc. North Central Weed Sci. Soc. Aster 55:90.Google Scholar
Smith, D. A. 2003. Evaluation of Microsphaeropsis amaranthi as a bioherbicide for the control of waterhemp (Amaranthus tuberculatus). , Purdue University, West Lafayette, IN.Google Scholar
Smith, D. A. and Hallett, S. G. 2003. Compatibility of the candidate bioherbicide Microsphaeropsis amaranthi with herbicides and adjuvants in tank mixture. Pages 615–618 in Proceedings of the BCPC International Congress: Crop Science and Technology, Glasgow, U.K.: British Crop Protection Council.Google Scholar
Smith, D. A. and Hallett, S. G. 2006. Variable response to glyphosate in common waterhemp from different parts of the midwestern USA. Weed Technol 20:18–23.Google Scholar
Wymore, L. A., Watson, A. K., and Gotlieb, A. R. 1987. Interaction between Colletotrichum coccodes and thidiazuron for control of velvetleaf (Abutilon theophrasti). Weed Sci 35:377–383.CrossRefGoogle Scholar
Wyss, G. S., Charudattan, R., Rosskopf, E. N., and Littel, R. C. 2004. Effects of selected pesticides and adjuvants on germination and vegetative growth of Phomopsis amaranthicola, a biocontrol agent for Amaranthus spp. Weed Res 44:469–482.Google Scholar
Zelaya, I. A. and Owen, M. D. K. 2005. Differential response of Amaranthus tuberculatus (Moq ex. DC) JD Sauer to glyphosate. Pest Manag. Sci 61:936–950.Google Scholar
Zhang, W. M., Wolf, T. M., Bailey, K. L., Mortensen, K., and Boyetchko, S. M. 2003. Screening of adjuvants for bioherbicide formulations with Colletotrichum spp. and Phoma spp. Biol. Control 26:95–108.Google Scholar