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Influence of Crop Canopy, Weed Maturity, and Rainfall on Acifluorfen Activity

Published online by Cambridge University Press:  12 June 2017

Ronald L. Ritter  and
Harold D. Coble
Ronald L. Ritter
Affiliation:
Dep. of Agron., Univ. of Maryland, College Park, MD, 20742
Harold D. Coble
Affiliation:
Crop Sci. Dep., North Carolina State Univ., Raleigh, NC 27650
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Abstract

In greenhouse studies, control of common ragweed (Ambrosia artemisiifolia L. ♯ AMBEL) and common cocklebur (Xanthium pensylvanicum Wallr. ♯ XANPE) was achieved whether or not soybeans [Glycine max L. (Merr.) ‘Ransom’] partially shielded the weeds from foliar applications of acifluorfen {5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acid}. Excellent control (> 90%) of common ragweed was obtained in the greenhouse 2 and 4 weeks after plant emergence. Best control (> 90%) of common cocklebur was obtained 2 weeks after plant emergence. A simulated rainfall of 0.6 cm occurring 1 min after acifluorfen application did not decrease control or fresh weight of common ragweed in greenhouse studies. The weed control efficiency of acifluorfen on common cocklebur was reduced when the herbicide was applied intermittently within 6 h of the 0.6-cm simulated rainfall. The weed control efficiency of acifluorfen on both weed species was also reduced when the herbicide was applied intermittently within 6 to 12 h of a 1.3-cm simulated rainfall in greenhouse studies. In field studies, 2.5 cm of simulated rainfall within 12 to 24 h after acifluorfen application reduced control of common ragweed.

Keywords

Glycine maxAmbrosia artemisiifoliaXanthium pensylvanicumdiphenyletherAMBELXANPE
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 32 , Issue 2 , March 1984 , pp. 185 - 190
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

Literature Cited

1. Baldwin, F. L. and Frans, R. E. 1972. Soybean and weed response to dinoseb and chloroxuron applied topically. Weed Sci. 20:511–514.CrossRefGoogle Scholar
2. Carlson, W. C. and Wax, L. M. 1970. Factors influencing the phytotoxicity of chloroxuron. Weed Sci. 18:98–101.Google Scholar
3. Doran, D. L. and Andersen, R. N. 1975. Effects of simulated rainfall on bentazon activity. Weed Sci. 23:105–109.Google Scholar
4. Fehr, W. R., Caviness, C. E., Burmood, D. T., and Pennington, J. S. 1971. State of development description for soybeans [Glycine max (L.) Merr.] Crop Sci. 11:929–931.CrossRefGoogle Scholar
5. Jolley, E. R. and Walker, R. H. 1979. Effects of simulated rainfall on acifluorfen and bentazon activity. Proc. South. Weed Sci. Soc. 32:64.Google Scholar
6. Johnson, W. O., Kollman, G. E., Swithenbank, C., and Yih, R. Y. 1978. RH-6201 (Blazer): A new broad spectrum herbicide for postemergence use in soybeans. J. Agric. Food Chem. 26:285–286.CrossRefGoogle Scholar
7. Lee, S. D. and Oliver, L. R. 1982. Efficacy of acifluorfen on broadleaf weeds. Times and methods for application. Weed Sci. 30:520–526.Google Scholar
8. Linscott, D. L. and Hagin, R. D. 1968. Effects of two environmental factors on removal of 2,4-DB from forage. Weed Sci. 16:114–116.Google Scholar
9. Mathis, W. D. and Oliver, L. R. 1980. Control of six morningglory (Ipomoea) species in soybeans (Glycine max). Weed Sci. 28:409–415.Google Scholar
10. McWhorter, C. G. and Anderson, J. M. 1976. Bentazon applied postemergence for economical control of common cocklebur in soybeans. Weed Sci. 24:391–396.Google Scholar
11. McWhorter, C. G. and Jordan, T. N. 1976. Effects of adjuvants and environment on the toxicity of dalapon to johnsongrass. Weed Sci. 24:257–260.Google Scholar
12. Nalewaja, J. D. and Adamczewski, K. A. 1977. Redroot pigweed (Amaranthus retroflexus) control with bentazon plus additives. Weed Sci. 25:506–510.Google Scholar
13. Nalewaja, J. D., Pudelko, J., and Adamczewski, K. A. 1975. Influence of climate and additives on bentazon. Weed Sci. 23:504–507.Google Scholar
14. Ritter, R. L. and Coble, H. D. 1981. Influence of temperature and relative humidity on the activity of acifluorfen. Weed Sci. 29:480–485.Google Scholar
15. Weber, J. B. 1977. Soil properties, herbicide sorption, and model soil systems. Pages 59–72 in Research Methods in Weed Science, South. Weed Sci. Soc., Auburn, AL.Google Scholar
16. Wilson, R. G. Jr. and Burnside, O. C. 1973. Weed control in soybeans with postemergence-directed herbicides. Weed Sci. 21:81–85.CrossRefGoogle Scholar