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Effects of insecticides on Sitona discoideus (Gyllenhal) (Coleoptera: Curculionidae) and its parasitoid Microctonus aethiopoides (Loan) (Hymenoptera: Braconidae)
(Lincoln University, 1991)
Laboratory and field experiments were conducted to evaluate the effect of insecticides on the egg and adult stages of Sitona discoideus (Gyllenhal), and its natural enemy Microctonus aethiopoides (Loan). A range of ...
A policy analysis of the attempted control of bovine tuberculosis in New Zealand
(Lincoln University, 1990)
Bovine Tuberculosis (Mycobacterium bovis) is endemic in over 13% of New Zealand. Despite the concentrated efforts of government departments and regional pest boards over the last 20 years, the disease continues to spread ...