Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-20T00:32:40.075Z Has data issue: false hasContentIssue false
  • English
  • Français

Foliar Abscission of Woody Plants by Combinations of Endothall and Ethephon

Published online by Cambridge University Press:  12 June 2017

J. P. Sterrett ,
G. R. Leather ,
W. E. Tozer ,
W. D. Foster  and
D. T. Webb
J. P. Sterrett
Affiliation:
Vegetation Control Division, Fort Detrick, Frederick, MD 21701
G. R. Leather
Affiliation:
Vegetation Control Division, Fort Detrick, Frederick, MD 21701
W. E. Tozer
Affiliation:
Vegetation Control Division, Fort Detrick, Frederick, MD 21701
W. D. Foster
Affiliation:
Biomathematics Division, Fort Detrick, Frederick, MD 21701
D. T. Webb
Affiliation:
Vegetation Control Division, Fort Detrick, Frederick, MD 21701
Get access Rights & Permissions [Opens in a new window]

Abstract

Foliar abscission induced by mist blower applications of endothall [7-oxabicyclo(2,2,1)heptane-2,3-dicarboxylic acid] combined with ethephon [(2-chloroethyl)phosphonic acid] occurred within 14 days on six field-grown deciduous species. Refoliation was essentially complete after one dormant season except on pin oak (Quercus palustris Muenchh.), which exhibited shoot damage from May and June treatments. Abscission did not occur on coniferous species. Effective doses ranged from 150 to 2,400 μg/ml endothall with 4,800 μg/ml ethephon. In greenhouse experiments on white ash (Fraxinus americana L.), the most effective levels of surfactant with endothall/ethephon ranged from 0.5 to 1.3%, and a spray volume as low as one-quarter runoff gave adequate coverage.

Type
Research Article
Information
Weed Science , Volume 22 , Issue 6 , November 1974 , pp. 608 - 614
Copyright
Copyright © 1974 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. Abeles, F.B. 1969. Abscission: role of cellulase. Plant Physiol. 44:447–452.Google Scholar
2. Cooper, W.C., Rasmussen, G.K., Rogers, B.J., Reece, P.C., and Henry, W.H. 1968. Control of abscission in agricultural crops and its physiological basis. Plant Physiol. 43:1560–1576.Google Scholar
3. Currier, H.B. and Dybing, C.D. 1959. Foliar penetration of herbicides – review and present status. Weeds 7:195–213.Google Scholar
4. Davis, J.T., Sterrett, J.P., and Leather, G.R. 1972. Ethephonendothall as a chemical abscissor of bean leaves. HortScience 7:478–480.Google Scholar
5. Foy, C.L. 1964. Foliar penetration. J. Agr. Food Chem. 12:473–476.Google Scholar
6. Hall, W.C. 1952. Evidence on the auxin-ethylene balance hypothesis of foliar abscission. Bot. Gaz. 113:310–321.Google Scholar
7. Jackson, J.M. 1952. Physiology of leaf abscission. Ark. Acad. Sci. 5:73–76.Google Scholar
8. Larson, F.E. 1973. Stimulation of leaf abscission of tree fruit nursery stock with ethephon-surfactant mixtures. J. Hort. Sci. 98:34–36.Google Scholar
9. Maynard, J.A. and Swan, J.M. 1963. Organo-phosphorous compounds. I. 2-chloroalkylphosphonic acid as phosphorylating agents. Australian J. Chem. 16:596–608.Google Scholar
10. Morgan, P.W. and Durham, J.I. 1972. Abscission: Potentiating action of auxin transport inhibitors. Plant Physiol. 50:313–318.Google Scholar
11. Smith, L.W., Foy, C.L., and Boyer, D.E. 1967. Herbicidal enhancement by certain biodegradable surfactants. Weeds 15:87–89.Google Scholar
12. Sterrett, J.P., Leather, G.R., and Tozer, W.E. 1973. Defoliation response of woody seedlings to endothall/ethephon. HortScience 8:387–388.Google Scholar
13. Sterrett, J.P., Leather, G.R., and Tozer, W.E. 1974. Foliar abscission of woody plants with endothall and ethephon. Weed Sci. Soc. Amer. Abstr. 65. p. 28.Google Scholar