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Alternaria helianthi and Imazaquin for Control of Imazaquin Susceptible and Resistant Cocklebur (Xanthium strumarium) Biotypes

Published online by Cambridge University Press:  12 June 2017

Hamed K. Abbas  and
William L. Barrentine
Hamed K. Abbas
Affiliation:
USDA-ARS, South. Weed Sci. Lab., Ext. Center, Stoneville, MS 38776
William L. Barrentine
Affiliation:
Delta Res. and Ext. Center, Stoneville, MS 38776
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Abstract

The efficacy of Alternaria helianthi on imazaquin-susceptible and -resistant biotypes of common cocklebur was evaluated with and without imazaquin. A. helianthi caused severe damage to both biotypes when applied at 80,000 conidia ml−1 at the five- to six-leaf stage. Symptoms included necrotic lesions, stunting, and mortality. Mortality from imazaquin at 140 g ai ha−1 was 0 and 100% and mortality from A. helianthi at 80,000 conidia ml−1 was 33 to 75% and 67 to 100% for resistant and susceptible biotypes, respectively, and surviving plants showed reduction in height, dry weight, and number of new leaves. The combination of imazaquin at 18 g ai ha−1 and A. helianthi at 40,000 conidia ml−1 was not synergistic or antagonistic in killing common cocklebur.

Keywords

Imazaquin, (2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acid) common cocklebur (Xanthium strumarium L.) #3 XANST Alternaria helianthi (Hansf.) Tubaki and NishiharaBiological activitybioherbicide
Type
Weed Management
Information
Weed Science , Volume 43 , Issue 3 , September 1995 , pp. 425 - 428
Copyright
Copyright © 1995 by the Weed Science Society of America 

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References

LITERATURE CITED

1. Abbas, H. K. and Egley, G. H. 1994. Temperature effects on Alternaria helianthi virulence on weed and crop species. Absts. Weed Sci. Soc. Am. 34:50.Google Scholar
2. Allen, S. J., Brown, J. F., and Kochman, J. K. 1983. Production of inoculum and field assessment of Alternaria helianthi on sunflower. Plant Dis. 67:665–668.Google Scholar
3. Barrentine, W. L. 1974. Common cocklebur competition in soybeans: Weed Sci. 22:600–603.Google Scholar
4. Barrentine, W. L. 1994. A common cocklebur (Xanthium strumarium) biotype is resistant to the imidazolinone herbicides. Proc. South. Weed. Sci. Soc. 47:158.Google Scholar
5. Bloomberg, J. R., Kirkpatrick, B. L., and Wax, L. M. 1982. Competition of common cocklebur (Xanthium pensylvanicum) with soybean (Glycine max). Weed Sci. 30:507–513.CrossRefGoogle Scholar
6. Buchanan, G. A. and Burns, E. R. 1971. Weed competition in cotton: II. Cocklebur and redroot pigweed. Weed Sci. 19:580–582.Google Scholar
7. Haigler, W. E., Gossett, B. J., Harris, J. R., and Toler, J. E. 1988. Resistance of common cocklebur (Xanthium strumarium) to the organic arsenical herbicides. Weed Sci. 36:24–27.Google Scholar
8. Kendig, A. J. 1994. Herbicide resistant weeds in Missouri. Proc. South. Soybean Conf. 2:12–13.Google Scholar
9. McWhorter, C. G. and Hartwig, E. E. 1972. Competition of johnsongrass and cocklebur with six soybean varieties. Weed Sci. 20:56–59.Google Scholar
10. Morris, J. B., Young, S. M., and Wilson, L. 1983. Reaction of helianthi species to Alternaria helianthi . Plant Dis. 67:539–540.Google Scholar
11. Nimbal, C. I., Shaw, D. R., Byrd, J. D. Jr., Wills, G. D., Heitholt, J. J., and Duke, S. O. 1993. Physiological differences in wild-type and arsenical herbicide-resistant common cocklebur (Xanthium strumarium L.). Proc. South. Weed Sci. Soc. 46:381.Google Scholar
12. Quimby, P. C. Jr. 1989. Response of common cocklebur (Xanthium strumarium L.) to Alternaria helianthi . Weed Technol. 3:177–181.Google Scholar
13. Shane, W. W., Baumer, J. S., and Sederstrom, S. G. 1981. Alternaria helianthi: A pathogen of sunflower new to Minnesota. Plant Dis. 65:269–271.Google Scholar
14. Snipes, C. E., Buchanan, G. A., Street, J. E., and McGuire, J. A. 1982. Competition of common cocklebur (Xanthium pensylvanicum) with cotton (Gossypium hirsutum). Weed Sci. 30:553–556.Google Scholar