Results - Canker incidence and Canker severity

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Cypress canker

There was a significant difference in canker incidence (P=2.77x10-7) and canker severity (P=3.36x10-8). There was no cypress canker found on SC5. There was lower incidence and severity of cypress canker on C. lusitanica, Ovensii and Hycol. Both C. macrocarpa and Ferndown had significantly higher severity ranking of cypress canker than all the other varieties (Figure 1).

 

Cypress Trial Chart 4 Canker Intensity and Severity

Figure 1 Comparison of the eight cypress cultivars with respect to Canker incidence, frequency where 1 represents 100 per cent of trees infected with cypress canker, on the left axis; and Canker severity, where a rank of 0 indicates no canker, on the right axis.

A Cupressus macrocarpa that has died from cypress canker and sick trees in the background, and a Ferndown showing signs of canker

Figure 2 A Cupressus macrocarpa that has died from cypress canker and sick trees in the background in the left hand image

Figure 3 A Ferndown cultivar showing signs of canker in the right hand image.

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