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Control of Bigroot Morningglory (Ipomoea pandurata)

  • Michael J. Horak (a1) and Loyd M. Wax (a1)

Abstract

Herbicide efficacy was examined in the greenhouse on bigroot morningglory seedlings and on established plants in the field. Dicamba (0.14 kg ae ha-1) and 2,4-D (0.28 kg ae ha-1) alone or combined, glyphosate (2.24 kg ai ha-1), fluroxypyr (0.28 kg ae ha-1), and triclopyr (0.42 kg ae ha-1) controlled more than 90% of bigroot morningglory seedlings. Fluroxypyr (0.56 kg ha-1), triclopyr (0.84 kg ha-1), and 2,4-D (0.56 kg ha-1) alone or combined with dicamba (0.28 kg ha-1) reduced established stands in the field at least 50% within the season of application, whereas clopyralid (0.56 kg ha-1) did not provide acceptable control. Glyphosate (2.24 kg ha-1) was among the best treatments for long term control at all locations.

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References

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1. Britton, N. L., and Brown, A. 1936. p. 43 in Illustrated Flora of the Northern United States, Canada, and the British Possessions. Lancaster Press, Inc., Lancaster, PA.
2. Horak, M. J. and Wax, L. M. 1991. Germination and seedling development of bigroot morningglory (Ipomoea pandurata). Weed Sci. 39:390396
3. Horak, M. J. and Wax, L. M. 1991. Growth and development of bigroot morningglory (Ipomoea pandurata). Weed Technol. 5:804809.
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5. Shoop, G. J., Kittle, D. R., and Stait, A. O. 1982. Oryzalin early preplant surface applied for weed control in no till soybeans. Proc. North Cent. Weed Control Conf. 37:6264.
6. Southern Weed Science Society, Weed Identification Committee. p. 4 IPOPA in Weed Identification Guide. South. Weed Sci. Soc. Pub., Champaign, IL.
7. Wax, L. M., Fawcett, R. S., and Isley, D. 1981. p. 143 in Weeds of the North Central States. North Cent. Reg. Res. Pub. No. 281.
8. Weed Loss Committee, Jordan, T. N. chairman. 1985. North Cent. Weed Control Conf. Res. Rep. 42:344355.

Keywords

Control of Bigroot Morningglory (Ipomoea pandurata)

  • Michael J. Horak (a1) and Loyd M. Wax (a1)

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