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Johansson, Agneta (2007) Biologin hos svenska Lilioceris arter och åtgärder för att begränsa deras skadeverkningar. Other thesis, SLU.

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Abstract

Summary The leaf beetles, Lilioceris lilii and L. merdigera have existed in Asia, Europe and in North Africa for a long time, but have become much more abundant the last twenty-five years. Even North America has been affected during the last years. The purpose of this investigation of Lilioceris species in Sweden, is to give advice to gardeners, which type of control measures is the most effective in order to restrict their damage to lilies. Lilioceris species overwinter normally as pupae in the soil under the host or close by. Literature and contact with advisors have described the life cycle and spreading of Lilioceris. Under favourable conditions these leaf beetles have two generations/year in the south of Sweden. Both the adults and the larva eat the foliage, and by strong attacks even flowers can be eaten and only the stem is remaining. My own observations include different treatments of both lily foliage and of the leaf beetle. The most effective treatment was, strangely enough, a mixture of Tabasco, bicarbonate and water. Together with the literature these observations have given a picture of how Lilioceris species can be controlled by environmentally friendly means.

Item Type: Thesis (Other)
Keywords: liljebaggar, skadeverkningar, lökbaggar, Lilioceris, liljor
Subject (faculty): Faculty of Landscape Planning, Horticulture and Agricultural Science
Divisions: SLU > Faculty of Landscape Planning, Horticulture and Agricultural Science
Depositing User: Agneta Johansson
Date Deposited: 06 Nov 2007
Last Modified: 18 Aug 2015 09:56
URI: http://ex-epsilon.slu.se/id/eprint/2007

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