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Now showing items 11-20 of 36
Characterising the pathogenicity of Cylindrocarpon pauciseptatum associated with black foot disease on grapevines
(Lincoln University, 2014)
Black-foot disease caused by Cylindrocarpon/Ilyonectria species is a widespread disease of grapevines. In a 2005 survey of symptomatic plants in New Zealand, 95% of the pathogenic species recovered were “Cylindrocarpon” ...
The control of stored products pests in the South Island of New Zealand : a two part study
(Lincoln College, University of Canterbury, 1979)
This study is in two parts. The first reports the results of a mail questionnaire which was sent to 180 companies storing agricultural produce in the South Island of New Zealand. Sixty-eight percent were returned and showed ...
Field assessment of a sex attractant for control of grass grub, Costelytra zealandica (White)
(Lincoln College, University of Canterbury, 1975)
During the 1973 flight season of the grass grub beetle, Coatelytra zealandica (White), an attempt was made to suppress populations on small scale field plots by mass trapping male beetles using simple water traps baited ...
A rearing method and some biological studies of the weevil Sitona humeralis Stephens (Coleoptera: Curculionidae) in Canterbury
(Lincoln College, University of Canterbury, 1978)
A rearing method was developed to facilitate the study of the soil inhabiting stages of Sitona weevils, with particular reference to s. humeralis in Canterbury. Consideration is given to the physical requirements of both ...
A preliminary study of the fauna associated with lucerne, Medicago sativa L., variety Wairau in New Zealand : with special reference to pests, sampling methods and lucerne seed production
(Lincoln College, University of Canterbury, 1970)
Insects and other pests of Lucerne in New Zealand have received only spasmodic and cursory attention in the past (see Section 2.1). As a result, basic and applied information on insects associated with lucerne in New Zealand ...
Comparative studies on the toxicity of selected Acaricides to susceptible and resistant strains of Tetranychus urticae Koch (Acarina : Tetranychidae)
(Lincoln College, University of Canterbury, 1966)
Although scientific knowledge on insect resistance to chemicals has advanced spectacularly during the last few years it is not possible to apply directly these findings to resistance within the order Acarina. Not only are ...
Aspects of the biology of the grain aphid, Macrosiphum miscanthi Tak. 1921
(Lincoln College, University of Canterbury, 1970)
Wherever cereals are grown, insect pests will be found damaging the crop. A recent issue of a commercial journal stated that world production of cereals is over 566 million tons, with estimated world losses from insect ...
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, ...
Attractants for the New Zealand grass grub, Costelytra zealandica (White)
(Lincoln College, University of Canterbury, 1975)
It has been demonstrated (Osborne and Hoyt, 1970) that male grass grub beetles are strongly attracted to the phenol/formaldehyde resin Durez 12687. In preliminary work it was shown that attractant activity was associated ...
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 ...