Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

A preliminary examination of pests of fodder beet in Canterbury.

Abstract

Preliminary results are presented of a survey of the insects in fodder beet fields in Canterbury, New Zealand, in 1979-80. Species causing damage to the crop included Agrotis ipsilon aneituma (Wlk.), Costelytra zealandica (White) and Liriomyza chenopodii (Watt); Sminthurus viridis (L.) and Nysius huttoni White were present and potentially injurious. By far the most important insect-related pathogenic condition was yellowing, probably caused by an aphid-borne virus. The seasonal abundance of Aulacorthum solani (Kalt.) and Myzus persicae (Sulz.) (possible vectors of the pathogen) is described, and it is reported that the application of demeton-S-methyl as soon as aphids were first observed on the leaves was only partly effective in preventing the yellowing disease.