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Macro Cottony Cushion Scale
August / September 2023

Extension briefs for August and September 2023

SA Fruit Journal: August / September 2023

By Hannes Bester, MC Pretorius, Wayne Mommsen, Coenraad Fraenkel, André Combrink, Natasha Jackson and Jan Landman (Citrus Research International)

Integrated pest management

Citrus thrips (T.G. Grout)

Suppressing citrus thrips populations on the spring growth flush will assist in lowering populations experienced at petal fall. On younger trees, a methamidophos or acephate (Spectra Stem) stem treatment is a useful option for this. An alternative may be an organophosphate of which sprays must be completed before flowers open (not after petal fall), to reduce any impact on honeybees.

If mealybug requires control, the organophosphate could be sprayed at full cover. These treatments will also reduce developing populations of citrus psylla. Avoid using abamectin at this time, because it will be needed for citrus thrips control in summer, and only three applications are permitted per season.

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