Effect of Exogenous Methyl Jasmonate on Numerical Growth of the Population of the Two-Spotted Spider Mite (Tetranychus Urticae Koch.) on Strawberry Plants and Young Apple Trees
2010
Warabieda, Wojciech | Olszak, Remigiusz
Treating apple trees and strawberry plants with methyl jasmonate (JA-Me) was investigated to see how the treatment affects the population size of the two-spotted spider mite (Tetranychus urticae Koch.). Both apple and strawberry were represented by two cultivars: Jester, Close and Aga, Kent, respectively. Each plant was infested with mites one day after being treated with a methyl jasmonate (JA-Me) solution. The negative influence of the JA-Me plant treatment on the growth of the subsequently colonized population of the two-spotted spider mite was observed both for strawberry plants and apple trees. A significant interaction (plant treatment × cultivar), however, was observed in the experiment conducted on apple trees. The population of mites feeding on the cv. Jester was not influenced by the JA-Me treatment. This lack of influence by JA-Me treatment was in contrast to what was found with the cultivar Close.
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