文档介绍：Integrated management of slug and snail pests of hardy ornamental plants
I Schüder, G Port
University of Newcastle, School of Biology, Newcastle upon Tyne, NE1 7RU, UK
Email: Ingo.******@
J Bennison, H Maher
ADAS Boxworth, Cambridge, CB3 8NN, UK
ABSTRACT
The results of a project on slug and snail pests of hardy ornamental plants are described. Aspects of an IPM strategy, including biological, cultural and novel chemical control, knowledge of the biology of key pest species and analysis of pest behaviour were investigated. The key pests were the slug Deroceras panormitanum and the snail Oxyloma pfeifferi. Both species have a wide temperature range and a high optimum temperature. The main problems include poor control by molluscicide pellets, slug infestation risk from outside and permanent, heavy snail infestations. Control with copper-impregnated mattings reduced snail activity and suppressed slug egg-laying by up to 90 % in a field trial. The most promising novel molluscicides were cinnamamide, copper ammonium carbonate and ureaformaldehyde. Biological control with the parasitic nematode Phasmarhabditis hermaphrodita caused significant levels of mortality.
INTRODUCTION
Slug and snail pests cause serious damage to hardy ornamental plants estimated to cost at least £ 3 million per year in the UK (Bennison and Schüder, 2002, unpublished data). Damaged plants