Willow Sawfly Management Trials - Weeds Australia

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Willow Sawfly Management Trials - Weeds Australia

List of TablesTable 1: Site Details for Revegetation Field Trial ........................................................................5Table 2: Survival of Tube-Stock Planted at Three Trial Sites in Winter 2008 ...........................10Table 3: Average Height of Seedlings at Planting (Winter/Spring 2008), in December 2009 andin April 2010 and Change in Plant Height over Time..................................................12Table 4: Average Heights in April 2010 of Additional Tube-stock Planted Outside Trial Plots inSpring 2008 at Campaspe River...................................................................................13Table 5: Average Relative Light Levels at Tube-stock Planting Positions in Plots Under SteminjectedWillows and Untreated Willows.....................................................................14Table 6: Height of Seedlings Established in the Direct Sowing Plots at the Happy Valley Site,Assessed in April 2010.................................................................................................16Table 7: Site Locations, Willow Taxa Present and Willow Sawfly Population Levels inPrevious Seasons for Sites Monitored in 2009/10 Season ...........................................25Table 8: Willow Sawfly Populations Assessed Throughout the 2009/10 Season on VariousWillow Taxa at Monitoring Sites.................................................................................26Table 9: Willow Tree Defoliation at Monitoring Sites in 2009/10 Season.................................28Table 10: Change in Ratio of Live: Dead Material on Trees Between October 2007 and October2009..............................................................................................................................29Table i: Results of One Way ANOVA to Test Effect of Willow Tree Treatment on Survival ofTube-Stock over Two Seasons……………………………………………………….36Table ii: Results of Two Way ANOVA of Seedling Heights of the Different Native Specieswith Willow Tree Treatment as a Factor……………………………………………..36Table iii: Results of Two Way ANOVA of Relative Growth Rate (RGR) of Different NativeSpecies at Kiewa River Site with Willow Tree Treatment as a Factor……………....36Table iv: Results of One Way ANOVA to Test Effect of Willow Tree Treatment on Number ofSeedlings Establishing in Direct Seeded Plots at Happy Valley Site………………..37Table v: Results of One Way ANOVA to Test Effect of Willow Tree Treatment on Height ofSilver Wattle Seedlings Establishing in Direct Seeded Plots at Happy Valley Site....37List of FiguresFigure 1: Nested design of treatment allocations to test establishment of native riparian speciesunder stem-injected and non-injected willows trees at sites with either high or lowpopulations of willow sawfly. ........................................................................................5Figure 2: Known distribution of willow sawfly across Australia as at April 2010.....................33Figure 3: Known distribution of willow sawfly across south eastern Australia as at April2010..............................................................................................................................33

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