International Journal of Forestry Research / 2015 / Article / Tab 1

Research Article

Selective Herbicides for Cultivation of Eucalyptus urograndis Clones

Table 1

Herbicide treatments tested for selective weed control in Eucalyptus urograndis clonal plantation culture near Quincy, Florida, applied over the top of newly planted container-grown cuttings1, either prior to weed emergence (PRE, two weeks after planting) or after weed emergence (POST, six weeks after planting), compared to a nontreated control and near complete weed control obtained using repeated glyphosate herbicide sprays, carefully directed to weeds while shielding seedlings from spray contact.

TreatmentRelative rateActual rate2 (g ha−1)Trade nameHerbicide content

Flumioxazin Low 290 aiSureGuard51%
Flumioxazin High 430 aiSureGuard51%
Imazamox3Low 140 aeClearcast120 g L−1
Imazamox3High 280 aeClearcast120 g L−1
Imazapic3Low 140 aePlateau240 g L−1
Imazapic3High 210 aePlateau240 g L−1
Oxyfluorfen Low 1120 aiGoalTender480 g L−1
Oxyfluorfen High 2240 aiGoalTender480 g L−1
Sulfometuron methyl Low 26 aiOust XP75%
Sulfometuron methyl Medium53 aiOust XP75%
Sulfometuron methyl High 105 aiOust XP75%
Nontreated control
Complete weed control Accord XRT

Container grown rooted cuttings were sixteen weeks old at planting.
2Rate of active ingredient (ai) or acid equivalent (ae) applied.
3A nonionic surfactant was added at 0.25% (v/v) for POST applications of imazamox and imazapic as directed by the herbicide labels.

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