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Unrefined Corn Oil Improves the Mycoherbicidal Activity of Colletotrichum truncatum for Hemp Sesbania (Sesbania exaltata) Control

Published online by Cambridge University Press:  12 June 2017

C. Douglas Boyette
C. Douglas Boyette*
Affiliation:
South. Weed Sci. Lab., U.S. Dep. Agric., Stoneville, MS 38776
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Abstract

In greenhouse experiments, unrefined corn oil was tested as an adjuvant with the mycoherbicidal fungus, Colletotrichum truncatum. A1:1 (V/V) fungus/corn oil tank mixture extended by at least 70 h the period of time in which the fungus remains infective between inoculation and the onset of dew. This formulation also reduced the dew period requirements for optimal weed pathogenesis and mortality from 12 h to 2 h, and reduced the required spray volume by 100-fold, from 500 L/ha to 5 L/ha. These results suggest that formulating C. truncatum in unrefined corn oil greatly improves the bioherbicidal potential of this pathogen.

Keywords

Hemp sesbania, Sesbania exaltata (Raf.) Rydb. ex. A. W. Hill # SEBEXColletotrichum truncatum (Schw.) Andrus and MooreBioherbicidal potentialemulsionSEBEXCOLTRU
Type
Research
Information
Weed Technology , Volume 8 , Issue 3 , September 1994 , pp. 526 - 529
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

Literature Cited

1. Boyette, C. D., Quimby, P. C. Jr., Bryson, C. T., Egley, G. H., and Fulgham, F.E. 1993. Biological control of hemp sesbania (Sesbania exaltata) under field conditions with Colletotrichum truncatum formulated in an emulsifiable invert. Weed Sci. 41:497–500.Google Scholar
2. Boyette, C. D. 1991. Host range and virulence of Colletotrichum truncatum. a potential mycoherbicide for hemp sesbania (Sesbania exaltata). Plant Dis. 75:62–64.CrossRefGoogle Scholar
3. Boyette, C. D. 1991. Control of hemp sesbania with a fungal pathogen. Colletotrichum truncatum. U.S. Patent No. 5,034,328.Google Scholar
4. Bryson, C. T. 1987. Interference of hemp sesbania (Sesbania exaltata) with cotton (Gossypium hirsutum). Weed Sci. 35:314–318.CrossRefGoogle Scholar
5. Churchill, B. W. 1982. Mass production of microorganisms for biological control. p. 139–156 in Charudattan, R. and Walker, H. L., eds., Biological Control of Weeds with Fungal Pathogens, Wiley Publishing Co., New York.Google Scholar
6. Connick, W. J. Jr., Daigle, D. J., and Quimby, P. C. Jr. 1991. An improved invert emulsion with high water retention for mycoherbicide delivery. Weed Technol. 5:442–444.CrossRefGoogle Scholar
7. Daniel, J. T., Templeton, G. E., Smith, R. J. Jr., and Fox, W. T. 1973. Biological control of northern jointvetch in rice with an endemic fungal pathogen. Weed Sci. 21:303–307.Google Scholar
8. Godfrey, R. K. and Wooten, J. W. 1981. Aquatic and wetland plants of the Southeastern United States: Dicotyledons. Univ. of Georgia Press, Athens. p. 245–246.Google Scholar
9. Jackson, M. A. and Bothast, R. J. 1990. Carbon concentration and carbon-to-nitrogen ratio influence submerged culture conidiation by the potential bioherbicide Colletotrichum truncatum NRRL 13737. Appl. Environ. Microbiol. 56:3435–3438.Google Scholar
10. Jordan, J. H. 1985. Hemp sesbania control in cotton. Proc. Beltwide Cotton Prod. Res. Conf.—Cotton Weed Sci. Res. Conf. 9:206.Google Scholar
11. McWhorter, C. G. and Anderson, J. M. 1979. Hemp sesbania (Sesbania exaltata) competition in soybeans (Glycine max). Weed Sci. 27:58–63.CrossRefGoogle Scholar
12. McWhorter, C. G., Fulgham, F. E., and Barrentine, W. L. 1988. An air-assist spray nozzle for applying herbicides in ultra-low volume. Weed Sci. 36:118–121.CrossRefGoogle Scholar
13. Palmer, R. D. 1980. Category I. Weed survey. Southern States. South. Weed Sci. Soc. Res. Rep. 33:165–197.Google Scholar
14. Quimby, P.C. Jr., Fulgham, F. E., Boyette, C. D., and Connick, W. J. Jr. 1988. An invert emulsion replaced dew in biocontrol of sicklepod—a preliminary study. p. 264–270 in Hovde, D. A. and Beestman, G. B., eds., Pesticide Formulation and Application Systems, Vol. 8, ASTM-STP 980. American Society for Testing and Materials.Google Scholar
15. Steele, R. G. D. and Torrie, J. H. 1980. p. 193–200 in Principles and Procedures of Statistics. McGraw-Hill Book Co., New York.Google Scholar
16. Tuite, J. 1969. Plant Pathological Methods: Fungi and Bacteria. Burgess Publishing Co., Minneapolis, MN. p. 183–184.Google Scholar