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Options for Management of Diaprepes in Florida Citrus - Page 3
Control Strategies: Constraints
Adult Control
Disrupts Biological Control; Short Residual
Egg Control
Residual (Micromite) / Establishment (wasps)
Chemical Barrier to Neonate Larvae
Cost, Efficacy, Effect on Ants
Larval Control (Nematodes)
Efficacy? Rate? Cost
Root Rot Control
Cost, resistance (Fungicides) /
Pathovars (rootstocks)
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Adults usually only represent a small proportion of the total weevil population, so most weevils will escape control at any one time. Broad-spectrum insecticides can interfere with biological control of other pests, and may loose effect through selection for resistance.
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Growth regulators presently available as egg sterilnts are expensive, may not have a long residual during rainy seasons, and could disrupt biological control
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Insecticidal barriers require bare ground for effective application and disrupt ant populations that prey upon neonate larvae.
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Nematode quality and effect are difficult to evaluate and not always satisfactory. Applications must be made with sufficient moisture.
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