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Effect of Drought Stress on Velvetleaf (Abutilon theophrasti) and Bentazon Efficacy

Published online by Cambridge University Press:  12 June 2017

John R. Hinz  and
Michael D. K. Owen
John R. Hinz
Affiliation:
Agron. Dep., Iowa State Univ., Ames, IA 50011
Michael D. K. Owen
Affiliation:
Agron. Dep., Iowa State Univ., Ames, IA 50011
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Abstract

Greenhouse experiments were conducted to determine the effects of drought stress length and relief on velvetleaf growth and bentazon efficacy with crop oil concentrate (COC) and 28% urea ammonium nitrate (UAN). Drought stress caused leaf water and osmotic potentials to decline linearly over time. Leaf water potential ΨL) declined 0.02 and 0.08 MPa day−1 for velvetleaf subjected to −0.03 and −0.4 MPa soil water potential (ΨP), respectively. Osmotic potential (ΨO) declined 0.02 and 0.21 MPa day−1 for velvetleaf subjected to −0.03 and −0.4 MPa ΨP respectively. Bentazon did not reduce drought-stressed compared to non-drought-stressed velvetleaf dry weight 21 d after treatment with either COC or no adjuvant but did decrease dry weight with UAN. Reduced velvetleaf dry wights in drought-stressed velvetleaf compared to non-drought-stressed velvetleaf could not be accounted for by increased bentazon penetration in the drought-stressed plants. Rewatering velvetleaf subjected to 7 d of −0.4 MPA ΨP caused them to be more sensitive to bentazon than velvetleaf subjected to −0.03 MPa ΨP except when UAN was the adjuvant.

Keywords

Bentazon, 3-(1-methylethyl)-(1H)-2,1,3-benzothiadiazin-4(3H)-one 2,2-dioxidevelvetleaf, Abutilon theophrasti Medic. # ABUTHDrought stress reliefherbicide penetrationosmotic potentialleaf water potentialABUTH
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 42 , Issue 1 , March 1994 , pp. 76 - 81
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

Literature Cited

1. Akey, W. C. and Morrison, J. N. 1983. Effect of moisture stress on wild oat (Avena fatua) response to diclofop. Weed Sci. 31:247–253.Google Scholar
2. Boydston, R. A. 1992. Drought stress reduces fluazifop-p activity on green foxtail (Setaria viridis). Weed Sci. 40:20–24.CrossRefGoogle Scholar
3. Bukovac, M. J. 1976. Herbicide entry into plants. Pages 335–364 in Audus, L. J., ed. Herbicides: Physiology, Biochemistry, Ecology. Academic Press, New York.Google Scholar
4. Burke, J. J., Gamble, P. E., Hatfield, J. L., and Quisenberry, J. E. 1985. Plant morphological and biochemical responses to field water deficits. Plant Physiol. 79:415–419.Google Scholar
5. Fontana, S. A. and Smith, R. L. 1986. Comparison of 10-34-0 to 28-0-0 for velvetleaf control in acidfluorfen and bentazon combinations in soybeans. Proc. North Cent. Weed Control Conf. 41:53.Google Scholar
6. Freed, B. E. 1985. Postemergence broadleaf herbicide performance when tank mixed with fertilizer additives in soybeans. Proc. North Cent. Weed Control Conf. 40:75.Google Scholar
7. Harrison, S. K., Wax, L. M., and Bode, L. E. 1986. Influence of adjuvants and application variables on postemergence weed control with bentazon and sethoxydim. Weed Sci. 34:462–466.CrossRefGoogle Scholar
8. Hinz, J. R. 1992. Effect of drought stress on velvetleaf (Abutilon theophrasti) growth and bentazon efficacy. , Iowa State Univ. 123 pp.Google Scholar
9. Hunt, E. R. Jr., Weber, J. A., and Gates, D. M. 1984. Differences between tree species in hydraulic press calibration of leaf water potential are correlated with specific leaf area. Plant Cell Environ. 7:597–600.Google Scholar
10. Kidder, D. W. and Behrens, R. 1988. Plant responses to haloxyfop as influenced by water stress. Weed Sci. 36:305–312.Google Scholar
11. Kuzych, I. J. and Meggit, W. F. 1983. Alterations of epicuticular wax structure induced by surfactants. Proc. North Cent. Weed Control Conf. 38:38.Google Scholar
12. Li, X. 1990. Relationship of water stress and abscisic acid on photosynthesis of soybeans and sunflower leaves. Ph.D. Diss., Iowa State Univ. 139 pp.Google Scholar
13. Owen, M. D. K. 1985. Comparison of fluid fertilizer and crop oil concentrate as additives to herbicide treatments for velvetleaf (Abutilon theophrasti Medic.) control in soybeans. Proc. North Cent. Weed Control Conf. 40:89.Google Scholar
14. Oyarzabal, E. S. 1991. Effect of water stress on postemergence herbicide activity. Ph.D. Diss., Iowa State Univ. 178 pp.Google Scholar
15. Peregoy, R. S., Kitchen, L. M., Jordan, P. W., and Griffin, J. L. 1990. Moisture stress effects on the absorption, translocation, and metabolism of haloxyfop in johnsongrass (Sorghum halepense) and large crabgrass (Digitaria sanguinalis). Weed Sci. 38:331–337.Google Scholar
16. Pitty, A. 1988. Effect of environmental conditions on velvetleaf and giant foxtail epicuticular wax quantity and quality and the relationship to herbicide penetration. Ph.D. Diss., Iowa State Univ. 140 pp.Google Scholar
17. Smith, L., Mohan, G., and Kollman, G. E. 1985. Enhanced velvetleaf activity with 10-34-0 in acifluorfen-sodium and bentazon combinations. Proc. North Cent. Weed Control Conf. 40:70.Google Scholar
18. Wade, B. R., Mulvaney, R. L., and Liebl, R. A. 1991. Penetration of ammonium and akyl ammonium salts into velvetleaf and lambsquarter. Proc. North Cent. Weed Sci. Soc. 46:78.Google Scholar
19. Willingham, G. L. and Graham, L. L. 1988. Influence of environmental factors and adjuvants on foliar penetration of acifluorfen in velvetleaf (Abutilon theophrasti): An analysis using the fractional factorial design. Weed Sci. 36:824–829.Google Scholar