Comparison of aminocyclopyrachlor to standard herbicides for basal stem treatment of Eucalyptus benthamii

Eucalyptus species are grown for fiber, fuel, and other uses on more than 17.8 million ha worldwide, yet some species are considered invasive and may have adverse environmental or social impacts outside their native range. Aminocyclopyrachlor (AMCP) and standard applications of imazapyr and triclopy...

Full description

Saved in:
Bibliographic Details
Published in:Weed technology 2021-04, Vol.35 (2), p.304-308
Main Authors: Minogue, Patrick J., Lorentz, Kimberly A.
Format: Article
Language:English
Subjects:
Cold
crown reduction
DPX-MAT28
Eucalyptus
Herbicides
Invasive species
methylated seed oil
Nonnative species
Plantations
Regrowth
Seeds
Soybean oil
Soybeans
stem dieback
Stems
synthetic auxin herbicides
Trees
Triclopyr
Vegetation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Eucalyptus species are grown for fiber, fuel, and other uses on more than 17.8 million ha worldwide, yet some species are considered invasive and may have adverse environmental or social impacts outside their native range. Aminocyclopyrachlor (AMCP) and standard applications of imazapyr and triclopyr herbicides were compared for eucalyptus control using a basal stem application method. At 6 and 12 mo after treatment (MAT), basal stem applications using 5% (vol/vol) AMCP (120 g ae L–1) in methylated soybean oil (MSO) resulted in 97% to 99% eucalyptus crown reduction and generally provided greater control across all diameter classes than standard treatments of 28% imazapyr (240 g ae L–1) or 75% triclopyr ester (480 g ae L–1). AMCP at 5% was as effective as 40% vol/vol. Increases in stem live height at 24 MAT suggest that the effect of triclopyr ester basal stem treatment may be impermanent. AMCP treated trees did not have regrowth by 24 MAT. Nomenclature: Aminocyclopyrachlor; imazapyr; triclopyr; Camden white gum; Nepean River gum; Eucalyptus benthamii Maiden et Cambage
ISSN:0890-037X
1550-2740
DOI:10.1017/wet.2020.111