15th European Weed Research Society Symposium , 2010-07-12

Title : ( Efficacy and host range of thistle tortoise beetle (Cassida rubiginosa) for )

Authors: Ghorban Ali Asadi , Reza Ghorbani , Heinz Muller ,

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Canada thistle (Cirsium arvense) is a noxious weed and one of the most problematic weeds in field crops, orchards, vegetables, pastures and grasslands in Iran. Thistle tortoise beetle (Cassida rubiginosa), an herbivore insect, seems to be an effective agent for suppressing the biomass and survival of Canada thistle. Feeding 20 insects on each plant reduced total biomass and seed production by 78% and 94%, respectively. Host range studies on green thistle beetle (Cassida rubiginosa), in which feeds actively on this weed as larva and Adult, were studied in 20 crops with two methods of no-choice and multiple-choice, and in 22 weeds through field surveys. The results showed that plant feeding and female ovipositor by green Thistle were observed in Russian knapweed, Common Russian thistle, Bull thistle and Canada thistle. Green Thistle beetle fed on safflower but only about 5% of plant shoots only in no choice treatments; however this beetle did not deposit any eggs on sunflower. Green thistle beetle could be a promissing classical biocontrol agent for Canada thistle in grasses, natural grasslands, agricultural fields and pastures. poster

Keywords

, Biological control, Herbivor,
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@inproceedings{paperid:1015283,
author = {Asadi, Ghorban Ali and Ghorbani, Reza and Heinz Muller},
title = {Efficacy and host range of thistle tortoise beetle (Cassida rubiginosa) for},
booktitle = {15th European Weed Research Society Symposium},
year = {2010},
location = {Kaposvar},
keywords = {Biological control; Herbivor; Weed},
}

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%0 Conference Proceedings
%T Efficacy and host range of thistle tortoise beetle (Cassida rubiginosa) for
%A Asadi, Ghorban Ali
%A Ghorbani, Reza
%A Heinz Muller
%J 15th European Weed Research Society Symposium
%D 2010

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