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Sa Fruit Journal June July 2021 Extension Briefs Main
June / July 2021

Extension briefs for June and July 2021

SA Fruit Journal: June / July 2021

By J.J. Bester, MC Pretorius, Wayne Mommsen and Catherine Savage (Citrus Research International)

Integrated pest management

False codling moth (S.D. MOORE)

Orchard sanitation must continue diligently during the harvesting period. All fruit remaining on trees after harvest must be removed and destroyed within no more than two weeks after completion of harvesting. This is because FCM activity does not cease during winter and any remaining fruit can therefore serve to facilitate this activity. In addition, this winter fruit creates a reservoir of inoculum of FCM for the following spring. Conversely, removal of all fruit after harvest can dramatically reduce FCM levels in the following season. Fruit fly numbers can also build up on unharvested fruit.

Packhouses must continue to implement all aspects of the FCM risk management system (FMS) for fruit destined for the EU as diligently and accurately as possible. For example, grading of fruit on the packing line must be conducted as stringently as possible. Packhouses should not hesitate to slow down the line speed to enable more careful scrutiny of fruit. Additionally, a designated inspection table should preferably be installed just before final grading and sizing of fruit. These should be equipped with excellent lighting and staff appointed to conduct such inspections and grading must have 20/20 vision, and should be properly trained and incentivised to do the most reliable and accurate job possible. Also bear in mind that PPECB (Perishable Produce Export Certification Agency) pallet inspections are a critical component of the FMS in assisting to filter out infested fruit and, therefore, full cooperation must be given for this to be conducted thoroughly and accurately.

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