Hostname: page-component-848d4c4894-xfwgj Total loading time: 0 Render date: 2024-07-04T12:22:24.386Z Has data issue: false hasContentIssue false
  • English
  • Français

Bentazon Selectivity in Hot Pepper (Capsicum chinense) and Sweet Pepper (Capsicum annuum)

Published online by Cambridge University Press:  12 June 2017

Aurora M. Baltazar ,
Thomas J. Monaco  and
David M. Peele
Aurora M. Baltazar
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27650
Thomas J. Monaco
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27650
David M. Peele
Affiliation:
R. J. Reynolds Technical Co., Avoca Division, Merry Hill, NC 27957
Get access Rights & Permissions [Opens in a new window]

Abstract

The susceptibility of sweet pepper (Capsicum annuum L. ‘Keystone Resistant Giant’) and tolerance of hot pepper (Capsicum chinense L. ‘Bohemian Chili’) to bentazon [3-isopropyl-1H-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxide] was demonstrated under greenhouse and field conditions. Sweet pepper growth and fruit production were inhibited by foliar applications of bentazon at rates of 0.6 to 6.7 kg ai/ha. Severity of injury increased with application rate. Injury symptoms in sweet pepper were leaf chlorosis, with necrosis and death of shoot apices. Foliar applications of bentazon to hot pepper resulted in little or no injury. Bentazon inhibited Hill reaction activity of isolated chloroplasts from both species to a similar extent, suggesting that selectivity of this compound in hot pepper is not due to resistance at the chloroplast level.

Keywords

Mode of actionphytotoxicitytoleranceHill reactionbentazon
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 32 , Issue 2 , March 1984 , pp. 243 - 246
Copyright
Copyright © 1984 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

1. Andersen, R. N., Lueschen, W. E., Warnes, D. D., and Nelson, W. W. 1974. Controlling broadleaf weeds in soybeans with bentazon in Minnesota. Weed Sci. 22:136–142.CrossRefGoogle Scholar
2. Arnon, D. I. 1949. Copper enzymes in isolated chloroplasts: Polyphenol oxidase in Beta vulgaris . Plant Physiol. 24:1–15.Google Scholar
3. Arntzen, C. J., Pfister, K., and Steinback, K. E. 1982. The mechanism of chloroplast triazine resistance: Alterations in the site of herbicide action. Pages 185–214 in LeBaron, H. M. and Gressel, J., eds. Herbicide Resistance in Plants. John Wiley and Sons, Inc., New York.Google Scholar
4. Boger, P., Beese, B., and Miller, R. 1977. Long-term effects of herbicides on the photosynthetic apparatus. II. Investigations on bentazon inhibition. Weed Res. 17:61–67.Google Scholar
5. Good, N. E. 1961. Inhibitors of the Hill reaction. Plant Physiol. 36:788–803.Google Scholar
6. Hayes, R. M. and Wax, L. M. 1975. Differential intraspecific responses of soybean cultivars to bentazon. Weed Sci. 23:516–521.Google Scholar
7. Moreland, D. E. 1977. Measurements of reactions mediated by isolated chloroplasts. Pages 141–149 in Truelove, B., ed. Research Methods in Weed Science. 2nd ed. South. Weed Sci. Soc., Auburn, AL.Google Scholar
8. Moreland, D. E. and Hill, K. L. 1962. Interference of herbicides with the Hill reaction of isolated chloroplasts. Weeds 10:229–236.CrossRefGoogle Scholar
9. Mine, A. and Matsunaka, S. 1975. Mode of action of bentazon: Effect on photosynthesis. Pestic. Biochem. Physiol. 5:444–450.Google Scholar
10. Penner, D. 1975. Bentazon selectivity between soybean and Canada thistle. Weed Res. 15:259–262.Google Scholar
11. Pfister, K. and Arntzen, C. J. 1979. The mode of action of Photosystem II-specific inhibitors in herbicide-resistant weed biotypes. Z. Naturforsch. 34:996–1009.Google Scholar
12. Potter, J. R. and Wergin, W. P. 1975. The role of light in bentazon toxicity to cocklebur: Physiology and ultrastructure. Pestic. Biochem. Physiol. 5:458–470.Google Scholar
13. Retzlaff, G. and Hamm, R. 1976. The relationship between CO2 assimilation and the metabolism of bentazon in wheat plants. Weed Res. 16:263–266.Google Scholar