Research Article
Evaluation of the Effect of Four Bioactive Compounds in Combination with Chemical Product against Two Spider Mites Tetranychus urticae and Eutetranychus orientalis(Acari: Tetranychidae)
Figure 4
Principal component analyses of the main compounds in regards to the four essential oils. (a) Loading plot of the projection of the variables (main compounds) on the first and second principal components; (b) biplot of the projection of the variables on the individuals (the four essential oils) on the first and second principal components.
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