Now showing items 1-4 of 4
Aspects of the biology of the St. John’s wort beetle, Chrysolina hyperici (Forst.), relating to its role as a biocontrol agent
(Lincoln College, University of Canterbury, 1987)
A questionnaire on St. John's wort was presented to all South Island Noxious Plants Officers. Responses show that St. John's wort biocontrol is perceived as only partially effective. Areas of serious infestation remain, ...
Insect pest resistance : technological, biological and economic dimensions
(Lincoln College, University of Canterbury, 1984)
The literature on pest control technology, biology and economics is reviewed. The problem of resistance is considered in economic terms. Pest susceptibility is defined as a resource and because of a lack of property rights, ...
Toxicity studies of insecticides on lucerne aphids and their predators
(University of Canterbury, 1980)
The insecticides pirimicarb, fenvalerate, chlorpyrifos and demeton-S-methyl were tested against lucerne aphids Acyrthosiphon kondoiShinji and A. pisum (Harris) and against the natural enemies Austromicromus tasmaniae ...
The defoliation of pasture by Aphodius tasmaniae Hope (Coleoptera : Scarabaeidae) larvae studied with remote sensing and controlled environment methods
(Lincoln College, University of Canterbury, 1983)
Aphodius tasmaniae Hope is an intermittent pest of pastures in Canterbury. The defoliating biology of the larvae was investigated using remote sensing and controlled temperature methods in order to understand the mechanisms ...