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Effects of Rainfall and Temperature on Postemergence Control of Sicklepod (Cassia obtusifolia) with Imazaquin and DPX-F6025

Published online by Cambridge University Press:  12 June 2017

Richard M. Edmund Jr.  and
Alan C. York
Richard M. Edmund Jr.
Affiliation:
Crop Sci. Dep., North Carolina State Univ., Raleigh, NC 27695-7620
Alan C. York
Affiliation:
Crop Sci. Dep., North Carolina State Univ., Raleigh, NC 27695-7620
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Abstract

Foliar absorption of imazaquin {ammonium salt of 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acid} following postemergence application was not necessary for control of sicklepod (Cassia obtusifolia L. # CASOB). Application of imazaquin to the soil resulted in control similar to application to the soil plus foliage. A 0.6-cm simulated rainfall 0.05 h after postemergence application of 140, 280, or 560 g ae/ha of imazaquin did not reduce sicklepod control. Foliar absorption was necessary for control with postemergence application of DPX-F6025 {ethyl ester of 2-[[[[(4-chloro-6-methoxypyrimidin-2-yl)amino]-carbonyl] amino] sulfonyl] benzoate}. Application of DPX-F6025 to the foliage resulted in control similar to application to the soil plus foliage. Sicklepod control resulting from postemergence application of 18 g ae/ha of DPX-F6025 was reduced when 0.6 cm of simulated rainfall was received 1 h after application but not when received 4 h after application. With application of 9 g/ha of DPX-F6025, simulated rainfall 24 h after application reduced control. Sicklepod control resulting from postemergence application of sublethal rates of imazaquin and DPX-F6025 was greater when plants were exposed to 3 or more days of 24/18 C day/night temperature than when grown at a continuous 32/24 C temperature. Exposure to low temperature for 3 days immediately before imazaquin application resulted in greater enhancement of control than did exposure for 3 days immediately after application. The reverse was found with DPX-F6025. Control obtained with both imazaquin and DPX-F6025 increased as the number of days of exposure to low temperature increased from 3 to 6. Enhancement of control with low temperature diminished as the herbicide application rate increased.

Keywords

Foliar and root absorptionherbicide washofflow temperaturesimulated rainfallenvironmental effectsCASOB
Type
Weed Control and Herbicide Technolgy
Information
Weed Science , Volume 35 , Issue 2 , March 1987 , pp. 231 - 236
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

Literature Cited

1. Allen, D. R. and Banks, P. A. 1984. Evaluation of DPX-F6025 for broadleaf weed control in soybeans. Proc. South. Weed Sci. Soc. 37:73.Google Scholar
2. Anderson, 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
3. Behrens, R. and Elakkad, M. A. 1981. Influence of rainfall on the phytotoxicity of foliarly applied 2,4-D. Weed Sci. 29:349–355.CrossRefGoogle Scholar
4. Borner, H. 1979. Causes of the selective action of the photosynthetic inhibitors phenmedipham and bentazon. Z. Naturforsch. 34:926–930.CrossRefGoogle Scholar
5. Bovey, R. W. and Diaz-Colon, J. D. 1969. Effect of simulated rainfall on herbicide performance. Weed Sci. 17:154–157.CrossRefGoogle Scholar
6. Davies, L. G., Cobb, A. H., and Taylor, F. E. 1979. The susceptibility of Chenopodium album to bentazon under different environmental conditions. Proc. European Weed Res. Soc. Symp. The Influence of Different Factors on the Development and Control of Weeds. Mainz. Pages 97–104.Google Scholar
7. Donald, W. W. 1984. Chlorsulfuron effects on shoot growth and root buds of Canada thistle (Cirsium arvense). Weed Sci. 32:42–51.CrossRefGoogle Scholar
8. Griffin, J. L. 1985. Postemergence weed control in soybeans using AC 252,214 and DPX-F6025. Proc. South. Weed Sci. Soc. 38:79.Google Scholar
9. Hageman, L. H. and Behrens, R. 1984. Basis for response differences of two broadleaf weeds to chlorsulfuron. Weed Sci. 32:162–167.CrossRefGoogle Scholar
10. Hall, J. C., Bestman, H. D., Devine, M. D., and Born, W. H. Vanden 1985. Contribution of soil spray deposit from postemergence herbicide applications to control of Canada thistle (Cirsium arvense). Weed Sci. 33:836–839.CrossRefGoogle Scholar
11. Hayes, R. M. and Wax, L. M. 1975. Differential intraspecific responses of soybean cultivars to bentazon. Weed Sci. 23:516–521.CrossRefGoogle Scholar
12. Leopold, A. C. and Kriedemann, P. E. 1975. Plant Growth and Development. 2d ed. McGraw-Hill Book Co., New York. 543 pp.Google Scholar
13. Mahoney, M. D. and Penner, D. 1975. The basis for bentazon selectivity in navy bean, cocklebur, and black nightshade. Weed Sci. 23:272–276.CrossRefGoogle Scholar
14. Malefyt, T., Robson, P., and Shaner, D. L. 1983. The effect of temperature on AC 252,214 in Glycine max, Abutilon theophrasti, and Digitaria sanguinalis . Aspects of Applied Biology 4. Influence of environmental factors on herbicide performance and crop and weed biology. Pages 265–275.Google Scholar
15. Nalewaja, J. D. and Adamczewski, K. A. 1977. Uptake and translocation of bentazon with additives. Weed Sci. 25:309–315.CrossRefGoogle Scholar
16. Nalewaja, J. D. and Adamczewski, K. A. 1977. Redroot pigweed (Amaranthus retroflexus) control with bentazon plus additives. Weed Sci. 25:506–510.CrossRefGoogle Scholar
17. Nalewaja, J. D. and Woznica, Z. 1985. Environment and chlorsulfuron phytotoxicity. Weed Sci. 33:395–399.CrossRefGoogle Scholar
18. Nelson, L. E. 1967. Effect of root temperature variation on growth and transpiration of cotton seedlings. Agron. J. 59:391–395.CrossRefGoogle Scholar
19. Ray, T. B. 1984. Site of action of chlorsulfuron. Inhibition of valine and isoleucine biosynthesis in plants. Plant Physiol. 75:827–831.CrossRefGoogle ScholarPubMed
20. Ritter, R. L. and Coble, H. D. 1981. Influence of temperature and relative humidity on the activity of acifluorfen. Weed Sci. 29:480–485.CrossRefGoogle Scholar
21. Shaner, D. L., Anderson, P. C., and Stidham, M. A. 1984. Imidazolinones. Potent inhibitors of acetohydroxyacid synthase. Plant Physiol. 76:545–546.CrossRefGoogle ScholarPubMed
22. Shaner, D. L. and Robson, P. A. 1985. Absorption, translocation, and metabolism of AC 252,214 in soybeans (Glycine max), common cocklebur (Xanthium strumarium), and velvetleaf (Abutilon theophrasti). Weed Sci. 33:469–471.CrossRefGoogle Scholar
23. Steel, R.G.D. and Torrie, J. H. 1980. Principles and Procedures of Statistics – A Biometrical Approach. 2d ed. McGraw-Hill Book Co., New York. 633 pp.Google Scholar
24. Teasdale, J. R. and Thimijan, R. W. 1983. Influence of light and temperature on bentazon phytotoxicity to cucumber (Cucumis sativus). Weed Sci. 31:232–235.CrossRefGoogle Scholar
25. Upchurch, R. P., Coble, H. D., and Keaton, J. A. 1969. Rainfall effects following herbicidal treatment of woody plants. Weed Sci. 17:94–98.CrossRefGoogle Scholar
26. Weaver, R. J., Minarik, C. E., and Boyd, F. T. 1946. Influence of rainfall on the effectiveness of 2,4-dichlorophenoxy acetic acid spray for herbicidal purposes. Bot. Gaz. 107:540–544.CrossRefGoogle Scholar
27. Wills, G. D. 1976. Translocation of bentazon in soybeans and common cocklebur. Weed Sci. 24:536–540.CrossRefGoogle Scholar
28. Wills, G. D. and McWhorter, C. G. 1981. Effect of environment on the translocation and toxicity of acifluorfen to showy crotalaria (Crotalaria spectabilis). Weed Sci. 29:397–401.CrossRefGoogle Scholar