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Newly Seeded Alfalfa (Medicago sativa) Tolerates Glyphosate and SC-0224 at Doses That Control Dodder (Cuscuta spp.)

Published online by Cambridge University Press:  12 June 2017

Jean H. Dawson
Jean H. Dawson*
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Irrigated Agric. Res. and Ext. Cent., Prosser, WA 99350
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Abstract

Newly seeded alfalfa tolerated glyphosate applied from the 8-trifoliolate leaf stage (17 cm tall) to the pre-bud stage (34 cm tall) at 75 or 150 g ae ha-1. Injury symptoms were moderate and temporary. Glyphosate at 300 g ha-1 suppressed alfalfa severely and killed 30% of the plants when applied at the smallest (3-trifoliolate) stage of alfalfa growth. Alfalfa responded similarly to glyphosate and SC-0224.

Keywords

Glyphosate, N-(phosphonomethyl)glycineSC-0224 (sulfosate), trimethylsulfonium carboxymethylaminomethylphosphonatealfalfa, Medicago sativa L.dodder, Cuscuta spp.Crop suppressionherbicideparasitic weedstand establishmentselective control
Type
Research
Information
Weed Technology , Volume 4 , Issue 4 , December 1990 , pp. 876 - 879
Copyright
Copyright © 1990 Weed Science Society of America 

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References

Literature Cited

1. Dawson, J. H. 1971. Establishing alfalfa on dodder-infested soil. Weed Sci. 19:222–225.Google Scholar
2. Dawson, J. H. 1989. Dodder (Cuscuta spp.) control in established alfalfa (Medicago sativa) with glyphosate and SC-0224. Weed Technol. 3:552–559.Google Scholar
3. Dawson, J. H. 1989. Established forage alfalfa (Medicago sativa) tolerates glyphosate and SC-0224 applied to control dodder (Cuscuta spp.). Weed Technol. 3:560–565.CrossRefGoogle Scholar
4. Dawson, J. H. 1991. Dodder (Cuscuta spp.) control in newly seeded alfalfa (Medicago sativa) with glyphosate. Weed Technol. 4:880–885.Google Scholar
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