Economic Significance
The first sign of the presence of the larvae is a delay in plant growth accompanied by the withering of leaves which develop a bluish tinge. The larvae are found on cabbage, turnip, swede, radish and other cruciferous crops. Sometimes 300 larvae can be found on one plant, damaging the inner parts of the main root and disrupting the transport of water and nutrients to the stem and leaves causing the death of many plants.
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Famous quotes containing the words economic and/or significance:
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