Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-10T11:16:57.164Z Has data issue: false hasContentIssue false
  • English
  • Français

Evaluation of Fungus-Chemical Compatibility for Melaleuca (Melaleuca quinquenervia) Control

Published online by Cambridge University Press:  12 June 2017

Min B. Rayachhetry  and
M. L. Elliott
Min B. Rayachhetry
Affiliation:
Fort Lauderdale Research and Education Center, University of Florida, 3205 College Avenue, Fort Lauderdale, FL 33314
M. L. Elliott
Affiliation:
Fort Lauderdale Research and Education Center, University of Florida, 3205 College Avenue, Fort Lauderdale, FL 33314
Get access Rights & Permissions [Opens in a new window]

Abstract

Integration of a fungal pathogen with herbicides may enhance melaleuca control efforts in South Florida. Hyphal inoculum of four Botryosphaeria ribis Gross & Duggar isolates were evaluated in vitro for compatibility with imazapyr, glyphosate, and a surfactant. Imazapyr at 12 to 60 mg ai/ml did not cause significant loss of inoculum viability in all four isolates within 2 h after mixing. After 24 h, inoculum viability of isolate BR-4 remained unchanged at these imazapyr concentrations, but viability of BR-1 through BR-3 was reduced. Glyphosate at the lowest concentration (32 mg ai/ml) significantly reduced inoculum viability of all isolates within 2 h. Initially, the inoculum viability of all isolates remained unaffected by 1, 5, and 10% (v/v) surfactant concentrations. After 24 h, the surfactant reduced inoculum viability of BR-2, BR-3, and BR-4 inconsistently between experiments, while the inoculum viability of BR-1 was reduced significantly at all concentrations. Mixing of the lowest concentrations of imazapyr, glyphosate, and surfactant significantly reduced inoculum viability within 2 h. This corresponded to the results obtained for glyphosate alone. These results show that hyphal inoculum of B. ribis may be mixed with imazapyr and surfactant for field applications, but mixing the fungus with glyphosate may not be as efficacious.

Keywords

Glyphosate, N-(phosphomethyl) glycineimazapyr, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-pyridinecarboxylic acidtriclopyr, [(3,5,6-tricloro-2-pyridyl)oxy]acetic acidmelaleuca, Melaleuca quinquenervia (Cav.) Blake # MLAQUBiological controlweed controlfungusherbicidesurfactantglyphosateimazapyrtriclopyrBotryosphaeria ribisMLAQUCFU, colony forming unitsPDA, potato-dextrose-agarPDB, potato-dextrose brothSDW, sterile deionized water
Type
Research
Information
Weed Technology , Volume 11 , Issue 1 , March 1997 , pp. 64 - 69
Copyright
Copyright © 1997 by the 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. In Hoagland, R. E., ed. Microbes and Microbial Products as Herbicides. Washington, DC: American Chemical Society. pp. 241–259.Google Scholar
Balciunas, J. K., and Center, T. D. 1991, Biological control of Melaleuca quinquenervia: prospects and conflicts. In Center, T. D., Doren, R. F., Hofstetter, R. H., Myers, R. L., and Whiteaker, L. D. eds. Proceedings of the Symposium on Exotic Pest Plants, University of Miami. Washington, DC: U.S. Department of the Interior, National Park Services. pp. 1–16.Google Scholar
Bodle, M. J., Ferriter, A. P., and Thayer, D. D. 1994. The biology, distribution, and ecological consequences of Melaleuca quinquenervia in the Everglades. In Davis, S. M. and Ogden, J. C., eds. The Everglades, the Ecosystem and its Restoration. Delray Beach, FL: St. Lucie Press. pp. 341–355.Google Scholar
Charudattan, R., 1993. The role of pesticides in altering biocontrol efficacy. In Altman, J., ed. Pesticide Interactions in Crop Production, Beneficial and Deleterious Effects. Boca Raton, FL: CRC Press. pp. 421–432.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. In Duke, S. O., Menn, J. J., and Plimmer, J. R., eds. Pest Control with Enhanced Environmental Safety. Washington. DC: American Chemical Society. pp. 87–100.Google Scholar
Diamond, C., Davis, D., and Schmitz, D. C. 1991. The addition of Melaleuca quinquenervia to the Florida prohibited aquatic plant list. In Center, T. D., Doren, R. F., Hofstetter, R. H., Myers, R. L., and Whiteaker, L. D., eds. Proceedings of the Symposium on Exotic Pest Plants, University of Miami. Washington, DC: U.S. Department of the Interior, National Park Services. pp. 87–110.Google Scholar
Grant, N. G., Prusinkiewicz, E., Mortensen, K., and Makowski, R.M.D. 1990. Herbicide interactions with Colletotrichum gloeosporioides f. sp. malvae a bioherbicide for round-leaved mallow (Malva pusilla) control. Weed Technol. 4:716–723.Google Scholar
Hofstetter, R. H., 1991. The current status of Melaleuca quinquenervia in South Florida. In Center, T. D., Doren, R. F., Hofstetter, R. H., Myers, R. L., and Whiteaker, L. D., eds. Proceedings of the Symposium on Exotic Pest Plants, University of Miami. Washington, DC: U.S. Department of the Interior, National Park Services. pp. 159–176.Google Scholar
Klein, T. A., and Auld, B. A. 1995. Evaluation of Tween 20x and glycerol as additives to mycoherbicide suspensions applied to Bathurst burr. Plant Prot. Q. 10:14–16.Google Scholar
Klein, T. A., Auld, B. A., and Fang, W. 1995. Evaluation of oil suspension emulsions of Colletotrichum orbiculare as a mycoherbicide in field trials. Crop Prot. 14:193–197.Google Scholar
Laroche, F. B., and Ferriter, A. P., 1992. The rate of expansion of Melaleuca in South Florida. J. Aquat. Plant Manage. 30:62–65.Google Scholar
Meskimen, G. F., 1962. A silvical study of the Melaleuca tree in South Florida. . University of Florida, Gainesville, FL. 177 p.Google Scholar
Morton, J. F., 1969. Some ornamental plants excreting respiratory irritants. Proc. Fla. State Hortic. Soc. 82:415–421.Google Scholar
Myers, R. L., 1983. Site susceptibility to invasion by the exotic tree Melaleuca quinquenervia in southern Florida. J. Appl. Ecol. 20:645–658.Google Scholar
Myers, R. L., 1984. Ecological compression of Taxodium distichum var. nutans by Melaleuca quinquenervia in South Florida. In Ewel, C. and Odum, H. T., eds. Cypress Swamps. Gainesville, FL: University Press of Florida. pp. 358–364.Google Scholar
Prasad, R., 1994. Influence of several pesticides and adjuvants on Chondrostereum purpureum—a bioherbicide agent for control of forest weeds. Weed Technol. 8:445–449.Google Scholar
Rayachhetry, M. B., Blakeslee, G. M., and Charudattan, R. 1996a. Susceptibility of Melaleuca quinquenervia to Botryosphaeria ribis, a potential biological control agent. Plant Dis. 80:145–150.Google Scholar
Rayachhetry, M. B., Blakeslee, G. M., and Center, T. D. 1996b. Predisposition of melaleuca (Melaleuca quinquenervia) to invasion by the potential biological control agent Botryosphaeria ribis . Weed Sci. 44:603–608.Google Scholar
SAS Institute Inc. 1985. SAS User's Guide: Statistics. 5th ed. Cary, NC: SAS Institute. 584 p.Google Scholar