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Scouting Citrus for Pests - Page 16
Tedders trap data from established populations in irrigated groves often shows one large emergence peak of Diaprepes in springtime with a smaller, secondary peak in fall. This pattern indicates one primary generation per year and lends itself to planning applications for control. Treatments directed against adults, eggs or neonate larvae should be applied soon after the spring peak to achieve maximum effect. At that time largest number of adults are present and laying eggs. Nematodes directed against larvae should be applied during the summer rainy season. At this time most of the weevil population is in the larval state, and that soil moisture is optimal. See accompanying presentation of management of Diaprepes for further information.
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