Search
Now showing items 1-2 of 2
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 ...
Some aspects of the biology of the ragworth flea beetle Longitarsus Jacobaeae (Waterhouse) relating to its role as a biological control agent in New Zealand
(Lincoln University, 1991)
An Italian biotype of L. jacobaeae (Waterhouse) was introduced in to New Zealand in 1981 as a biological control agent for ragwort Senecio jacobaea, a problem weed in dairy farms. This thesis investigated various aspects ...