Article Figures & Data
Figures
- Figure 1.
Impact of oak wilt with loss of live oaks on urban property in Austin, TX.
- Figure 2.
Photo interpretation of an oak wilt center (MESA I) in Austin, TX, made from 1:24,000 scale cole-infrared aerial photography. Tree crowns, houses, streets, and locations of underground utilities are depicted in the drawing. Expansion of the disease center can be seen during the years 1982-1987.
- Figure 3.
Trenching to break root connections for oak wilt control in the urban environment.
- Figure 4.
Root flare, high volume injection with propiconazole for oak wilt control in live oak.
Tables
- Table 1.
Rates of spread for Ceratocystis fagacearum, sizes, and relative live oak densitiesx for two urban and two rural oak wilt centers in Central Texas.
Center Average yearly spread (m) Total crown cover (m2) Relative density Urban Mesa I 7.9 (± 8.0) 3277 0.26 Travis Heights 19.6 (±9.8) 15413 0.27 Rural Monte Verde 30.5 (±32.9) 29658 0.19 Bandera Creek 19.9 (±14.5) 16697 0.28 ↵x Relative density refers to total crown cover divided by total area of the focus.
- Table 2.
Locations, tree attributes and results for plots and sub-plots containing native live oaks used for testing the efficacy of propiconazole for control of oak wilt.
Plot no.w Location No. trees dbhx (in.) Crown loss (%)y No. dead Injected 1A Round Rock 8 11.3 2(±) 0 2A N.W. Hills 8 8.3 28(±14) 0 3 N.W. Hills 6 17.3 0 0 4 Camp Mabry 9 16.4 22(±44) 2 5 N.W. Hills 14 19.9 41 (±36) 3 6 Camp Mabry 6 25.4 0 0 7A Comfort 6 12.9 41 (±27) 0 Uninjected 1B Round Rock 8 6.1 88(±20) 5 2B N.W. Hills 8 11.4 61 (±34) 3 8 N.W. Hills 6 -z 79(±38) 4 7B Comfort 6 14.0 88(±20) 3 9 Camp Mabry 15 7.0 100 15 ↵w Plot numbers labelled with A or B and listed as treated and untreated denote a split plot in which treated and controls are intermingled.
↵x dbh = diameter breast height, as the average for all trees in the plot.
↵y Average crown loss assessment and standard deviation for all trees in a plot.
↵z Indicates no measurement taken.
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