Integrating Selective Herbicide and Native Plant Restoration to Control Alternanthera philoxeroides (Alligator Weed) Page: 21
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Summary Table of Two-way ANOVA Assessing the Effects of Triclopyr Herbicide Applications
and Competitive Species (Monocots and Dicots Grouped) Introduction on A. philoxeroides
Biomass, Cumulative Stem Length, and Shoot/Root Ratio
Herbicide X Competitive Species
(Monocots and Dicots Herbicide
Response Variable (Monocot and Dicot Combined)
F p Value F p Value F p Value
Shoot Dry Weight 2.02 0.1479 31.48 <.0001 1.43 0.2444
Root Dry Weight
Total Dry Weight
Shoot/Root Ratio 5.87 0.0062 21.33 <.0001 0.41 0.8003
Mean A. philoxeroides shoot, root, and total dry weight were significantly reduced with
increasing herbicide application frequency (Figure 12). Triclopyr applications reduced mean
shoot weight below controls (3.722g + 0.285) after one application (2.257g + 0.285), and further
after two applications (0.341g + 0.285). Triclopyr applications reduced mean root weight below
controls (8.004g + 0.501) after one application (5.028g + 0.501), and further after two
applications (1.744g + 0.501). Triclopyr applications reduced mean total weight below controls
(11.726g + 0.735) after one application (7.284g + 0.735), and further after two applications
(2.085g + 0.735). A. philoxeroides mean cumulative stem length was significantly lower at the
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Adams, Justin. Integrating Selective Herbicide and Native Plant Restoration to Control Alternanthera philoxeroides (Alligator Weed), thesis, December 2011; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc103280/m1/28/: accessed May 29, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .