Management of Carrot fly
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Maintaining a 3–5-year crop rotation of all crops within the carrot family (Apiaceae), and locating these crops as far away as possible from the previous year’s crop.
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Row cover is another method of exclusion.
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Spray profenophos 50 EC @ 400 ml/acre.
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Spray quinolphos 25 EC @ 300 ml/acre.