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Selective Control of Japanese Honeysuckle (Lonicera japonica)

Published online by Cambridge University Press:  12 June 2017

David L. Regehr  and
David R. Frey
David L. Regehr
Affiliation:
Dep. Plant Sci., Univ. Del., Newark, DE 19711
David R. Frey
Affiliation:
Dep. Plant Sci., Univ. Del., Newark, DE 19711
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Abstract

Japanese honeysuckle (Lonicera japonica Thunb. # LONJA) vines can smother young trees, presenting problems in nursery, parkland, and woodlot management. The tardy-deciduous nature of honeysuckle provides an application window for its selective control with glyphosate [N-(phosphonomethyl)-glycine] or dichlorprop [(±)-2-(2,4-dichlorophenoxy)propanoic acid] plus 2,4-D [2,4-dichlorophenoxy)acetic acid] immediately after fall defoliation of hardwood species. Glyphosate at 1.5% v/v (5.4 g ae/L) applied in December killed mature, woody honeysuckle vines and eliminated most regrowth from basal and subterranean buds 28 months after treatment. Dichlorprop plus 2,4-D at 1.5% v/v (3.6 g ae/L of each herbicide), when applied shortly after the first freezing temperatures in October, was as effective as glyphosate but was less effective when applied in December. Tuliptree (Liriodendron tulipifera L.), American beech (Fagus grandifolia Ehrh.), and Scotch pine (Pinus sylvestris L.) suffered minimal and temporary injury from these herbicides.

Keywords

Fagus grandifoliaLiriodendron tulipiferaPinus sylvestrisdichlorpropglyphosate2,4-DLONJA
Type
Research
Information
Weed Technology , Volume 2 , Issue 2 , April 1988 , pp. 139 - 143
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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