Integrating Selective Herbicide and Native Plant Restoration to Control Alternanthera philoxeroides (Alligator Weed) Page: V
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LIST OF FIGURES
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Figure 1. A. philoxeroides in treatment containers prior to herbicide treatments or introduction of
o th er p lan ts...........................................................................................................................9
Figure 2. Treatment containers randomly selected for the first application of triclopyr herbicide...
.........................................................10
Figure 3. Plant species used for competition treatments .............................................................10
Figure 4. Introduction of a competitor species into pots containing herbicide treated A.
p h ilox eroid es......................................................................................................................1 1
Figure 5. Satellite image of field study site in Grand Prairie, Texas ..........................................13
Figure 6. Example of one row of a block at the Grand Prairie field site ....................................15
Figure 7. Planting of Carex hyalinolepis following the first herbicide application ....................15
Figure 8. The first triclopyr application on A. philoxeroides at the Grand Prairie field site .......16
Figure 9. Carex brevior and A. philoxeroides in a greenhouse treatment container that received
tw o herbicide applications ..............................................................................................19
Figure 10. Greenhouse treatment containers on day of harvest....................................................22
Figure 11. Justicia american roots (top), A. philoxeroides roots (bottom)...................................23
Figure 12. Effect of herbicide application frequency on A. philoxeroides total, root, and shoot dry
w eight. n = 15 for each treatm ent ....................................................................................23
Figure 13. Effect of herbicide frequency on A. philoxeroides cumulative stem heights. n = 15 for
each treatm ent....................................................................................................................24
Figure 14. Effect of herbicide frequency on A. philoxeroides shoot/root ratio. n = 15 for each
treatm ent ....................................................................... .............................................. .2 5
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Adams, Justin. Integrating Selective Herbicide and Native Plant Restoration to Control Alternanthera philoxeroides (Alligator Weed), thesis, December 2011; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc103280/m1/6/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .