The potential for biological control of Buddleja davidii Franchet in New Zealand
1990
Kay, M. | Smale, M.C. (Forest Research Institute, Rotorua (New Zealand))
Naturalised Buddleja davidii represents an escalating weed problem to a number of resource managers. The suitability of biological control for B. davidii lies in the weed's invasion of relatively stable habitats, of modest economic value, where containment or suppression of the target, rather than eradication, is acceptable. Furthermore, apart from minor ornamental varieties, B. davidii has no close relatives of economic importance and the absence of Buddlejaceae from New Zealand's flora considerably lessens the risk from an introduced biological control agent. The costs of undertaking a biological control programme based on the importation of natural insect enemies from China are calculated as being of the order of $NZ 0.6 million
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