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EPTC Reduces Alfalfa (Medicago sativa) Tolerance to Bromoxynil

Published online by Cambridge University Press:  12 June 2017

Robert G. Hartzler
Robert G. Hartzler*
Affiliation:
Dep. Agron., Penn. State Univ., University Park, PA 16802
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Abstract

EPTC applied at the time of ‘Saranac AR’ alfalfa establishment resulted in higher levels of crop injury from the octanoic acid ester of bromoxynil applied postemergence compared to alfalfa in areas not treated with EPTC. EPTC applied at 1.7 or 3.4 kg ai ha-1 did not injure alfalfa. At Rock Springs, PA, 0.54 kg ai ha-1 bromoxynil caused 28, 43, and 55% foliar injury in areas treated with 0, 1.7, and 3.4 kg ai ha-1 EPTC, respectively. A similar interaction was observed at Landisville, PA, although the level of injury due to bromoxynil was less severe. EPTC also predisposed ‘WL 316’ alfalfa to bromoxynil injury in greenhouse experiments.

Keywords

Bromoxynil, 3,5-dibromo-4-hydroxybenzonitrileEPTC, S-ethyl dipropylcarbamothioatealfalfa, Medicago sativa L.Herbicide interactionsherbicide injury
Type
Note
Information
Weed Technology , Volume 5 , Issue 3 , September 1991 , pp. 632 - 634
Copyright
Copyright © 1991 Weed Science Society of America 

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References

Literature Cited

1. Gentner, W. A. 1966. The influence of EPTC on external foliage deposition. Weeds 14:27–31.Google Scholar
2. McCarty, M. K., and Sand, P. F. 1961. Chemical weed control in seedling alfalfa, III. Effect of some herbicides on five varieties. Weeds 9:14–19.Google Scholar
3. Nalewaja, J. D., and Skrzypczak, G. 1985. Environment and bromoxynil phytotoxicity. Weed Sci. 34:101–105.CrossRefGoogle Scholar
4. Peregrine, E. K., and Norris, R. F. 1988. Environmental modification of seedling alfalfa (Medicago sativa) tolerance to bromoxynil. Weed Sci 36:671–677.Google Scholar
5. Peters, E. J. 1964. Preemergence, preplanting and postemergence herbicides for alfalfa and birdsfoot trefoil. Agron. J. 56:415–419.Google Scholar
6. Sherman, M. E., Thompson, L. Jr., and Wilkinson, R. E. 1983. Sickle-pod (Cassia obtusifolia) management in soybeans (Glycine max). Weed Sci. 31:622–627.Google Scholar
7. Sherrick, S. L., Holt, H. A., and Hess, F. D. 1986. Effects of adjuvants and environment during plant development on glyphosate absorption and translocation in field bindweed (Convolvulus arvensis). Weed Sci. 34:811–816.Google Scholar
8. Still, G. G., Davis, D. G., and Zander, G. L. 1970. Plant epicuticular lipids: alteration by herbicidal carbamates. Plant Physiol. 46:307–314.Google Scholar
9. Wilson, R. G. 1986. Weed control in irrigated seedling alfalfa (Medicago sativa). Weed Sci. 34:423–426.Google Scholar
10. Wyrill, J. B. III, and Burnside, O. C. 1976. Absorption, translocation, and metabolism of 2,4-D and glyphosate in common milkweed and hemp dogbane. Weed Sci. 24:557–566.CrossRefGoogle Scholar