Effect of host plant on Gypsy moth diet and biological efficacy of Btk preparations
2006
Milanovic, S.(Institut za sumarstvo, Beograd (Serbia)) | Tabakovic-Tosic, M(Institut za sumarstvo, Beograd (Serbia)) | Markovic, N.(JP Srbijasume, Beograd (Serbia))
The effect of two host plants, Turkey oak (Quercus cerris L.) and black poplar (Populus nigra L.) on gypsy moth (Lymantria dispar L.) development was researched. The effect of host plant was determined based on the parameters which characterise the diet, growth and efficacy of conversion of ingested food of the third instar caterpillars. Along with the effect on development, the effect of host plant on the efficacy of biological preparation based on the bacterium Bacillus thuringiensis var. kurstaki in Gypsy moth caterpillar suppression was also researched. The differences in parameters characterising the diet, growth, and efficacy of ingested food, between experimental groups of caterpillars grown on poplar and Turkey oak leaves are explained by the differences in the chemical compostion of the leaves of these tree species. The efficcacy of Btk preparation is conditioned by the mechanism and content of different groups of defence substances in the leaves of the applied tree species.
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