Vranjic, J.A., & Ash, J.E. 1997 Scale insects consistently affect roots more than shoots: the impact of infestation size on growth of eucalypt seedlings.. Journal of Ecology 85: 143-149.

Notes: Different infestation levels of the phloem-feeding scale insect, Eriococcus coriaceus, consistently reduced root growth more than shoot growth in seedlings of Eucalyptus blakelyi.