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Northern Cape province of South Africa:

Oriental fruit fly succesfully eradicated in ZF Mgcawu district

The Department of Agriculture, Land Reform and Rural Development notified farmers and community members about the successful eradication of the invasive fruit fly species Bactrocera dorsalis (Oriental fruit fly or OFF) in the Pixley ka Seme and ZF Mgcawu district municipalities in the Northern Cape Province.

Several Oriental fruit fly (Bactrocera dorsalis) specimens were detected between Douglas and Prieska in the Pixley ka Seme District Municipality, as well as Groblershoop, Karos, Upington, Kakamas and Augrabies, including areas alongside or close to the Orange River in the ZF Mgcawu District Municipality. The detections were made on several occasions between 07 February and 29 May 2019, respectively.

The areas from Douglas to Prieska as well as between Groblershoop and Augrabies have been declared free from the presence of Bactrocera dorsalis.

Fresh produce host crops cultivated in the affected areas include citrus, table grapes and pomegranates. However, this is a polyphagous pest that can utilise hosts cultivated by the citrus, deciduous and subtropical fruit industries as well as berries, tomatoes, cucurbits, and crops produced for processing, i.e. grapes for raisins and wine. This pest can result in food insecurity, yield reduction, job losses, market restrictions and high production and post-harvest costs, if not effectively controlled.

The pest entered South Africa in 2010 and has established in the northern and eastern parts of the country. The department has since established an Exotic Fruit Fly Surveillance Programme and with many areas in the southern and western parts of the country still free from the Oriental fruit fly, it is highly essential to ensure that pest free areas are maintained

This fruit fly can be suppressed in areas where it has established by practising effective orchard/field sanitation, chemical control and restricting the removal of host material from quarantine (infested) areas to non-quarantine (non-infested) areas. Monitoring of the fruit fly population levels remains critical and growers must implement a monitoring programme for early detection or to ensure measures are implemented in time.

Traders, community members, marketing agents and farmers are reminded not to remove fruit from quarantine areas to non-quarantine areas without a removal permit, which is obtainable from the Directorate: Inspection Services in terms of the Control Measures R.110 of the Agricultural Pests Act,1983 (Act No. 36 of 1983). Removal cannot be allowed if fruit fly management measures are not implemented and population levels are not reduced to an acceptable level.    

Fruit-fly trapping buckets placed along roadsides in production areas and other public areas must not be removed. International travellers are advised to avoid illegal importation of agricultural commodities into South Africa because this may lead to the introduction of new pests that are expensive and difficult to manage.

For more information: 
Reggie Ngcobo
SA Department of Agriculture, Forestry and Fisheries
Tel: +27 082 883 2458

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