POWER: CONTROL OF PASTURE INSECTS IN NEW ZEALAND 7 The following two papers were part of a symposium on "Ecological Approaches to Insect Control" CONTROL OF PASTURE INSECTS IN NEW ZEALAND


The control of noxious elements in the pasture insect complex has, with the rapid growth of world human population,. assumed an often dangerous urgency. New Zealand, because of its great dependence on grassland farming, is less able than many countries to tolerate competition between insect and sheep or cow for available pasture. In our attempt to synthesise, largely from climax forest, a community favoudng domestic livestock, we have compounded an environment eminently suited to two indigenous insects, the grass grub (Costelytra zealandica (White)) and the porina caterpillar (Wiseana spp.). It is axiomatic that the degree of stability of a community is proportional to its complexity: ln the highly simplified environmen

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