Bronze birch beetle
Under the outer layers of bark on one of my Betula jacquemontii I yesterday
discovered some spongy patches. Exploration (peeling back the peeling layers) revealed linear clusters of black mouldy domes 5mm dia, looking rather like scale insects. further exploration revealed white wiggling worms 5-10mm long living in the domes. 10 minute on google suggested Bronze birch Beetle as the culprit, all the descriptions and pictures fit with what I see. I stripped off the overlying peeling bark on all I could see and sprayed with ultimate bug killer does anyone have any experience or advice? -- PK --- God said, "div D = rho, div B = 0, curl E = - @B/@t, curl H = J + @D/@t," and there was light. |
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