Abstract
The effect of the scale insect Eriococcus coriaceus on the growth of Eucalyptus blakelyi was investigated in a glasshouse experiment, by comparing the growth of uninfested control plants against that of plants infested with an initial population of 100-200 adult female insects, left to multiply unchecked for 30 wk, during autumn-winter. At the end of the experiment, infested plants had lower height, leaf area and dry weight than control plants. Root dry weight was more affected than shoot dry weight, suggesting that the major effects on plant growth were below ground (...)
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