The majority of Coccinellid ladybirds are beneficial to man because of their predacious nature. In 1874 Coccinella undecimpunctata Linneaus, was introduced into New Zealand, (Dumbleton 1936), as one of the first attempts at controlling aphids by biologica ...

Man’s success in increasing agricultural production has resulted from his ability to adopt the environment to his ends. But such manipulation also favours pests which could wipe out hoped for increases unless further steps are taken to keep the ecological ...

A regular and precisely defined staple crimp is an important contributor to the appearance of the fleece (Henderson, 1968). It is also well recognised that young sheep have a fleece that is better than older sheep. In some instances the deterioration of t ...

A summer climate of low humidity, warm winds and high temperatures creates the soil moisture conditions that are sufficient to sustain active plant growth over the summer period in Canterbury. Irrigation was installed to alleviate the summer drought and b ...

For the last 100 years, the condition of the New Zealand south Island high country has been the subject of much controversy. Although there are very few records of the condition of this land the time of European occupation one of the first accounts fro ...