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Control of Perennial Weed Species As Seedlings With Soil-Applied Herbicides

Published online by Cambridge University Press:  12 June 2017

Mark J. Vangessel
Mark J. Vangessel*
Affiliation:
Research and Education Center, University of Delaware, Georgetown, DE 19947. E-mail: mjv@udel.edu
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Abstract

Herbicides from several chemical families were evaluated in the greenhouse for preemergence control of perennial weed species emerging from seeds. Weed species were bermudagrass, johnsongrass, Canada thistle, common milkweed, common pokeweed, hemp dogbane, and horsenettle. Atrazine, cloransulam, chlorimuron, clomazone, flumetsulam, imazaquin, linuron, metolachlor, metribuzin, pendimethalin, and sulfentrazone were used representing common preemergence herbicide families used in the mid-Atlantic region for corn and soybean in a sandy loam soil. Hemp dogbane and common pokeweed were controlled (greater than 85%) by eight of the 11 herbicides in this study, indicating they may be the two most susceptible species in the trial. Metolachlor and pendimethalin provided control of only bermudagrass, and linuron controlled only Canada thistle. Cloransulam controlled all species except bermudagrass. Clomazone provided greater than 80% control of all species except horsenettle. Metribuzin alone or in combination with chlorimuron provided the broadest spectrum and highest level of control. Metribuzin provided greater than 85% control of all species except johnsongrass. Soil-applied herbicides can limit the establishment of perennial species from seeds.

Keywords

clomazone, 2-[(2-chlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidinonebermudagrass, Cynodon dactylon (L.) Pers. #CYNDACanada thistle, Cirsium arvense (L.) Scop. # CIRARcommon milkweed, Asclepias syriaca L. # ASCSYcommon pokeweed, Phytolacca americana L. # PHYAMhemp dogbane, Apocynum cannabinum L. # APCCAhorsenettle, Solanum carolinense L. # SOLCAjohnsongrass, Sorghum halepense (L.) Pers # SORHAcorn, Zea mays L.soybean, Glycine max (L.) MerrPreemergence herbicides
Type
Note
Information
Weed Technology , Volume 13 , Issue 2 , June 1999 , pp. 425 - 428
Copyright
Copyright © 1999 by the Weed Science Society of America 

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References

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