Notification on the first detection of Citrus black spot in Botswana

Date de publication

mar, 04 Oct 2022, 06:53

Dernière mise à jour effectuée le

oct. 4, 2022, 6:53 matin

Report Number

BWA-02/1

Pays

Botswana

Identité de l'organisme nuisible

Phyllosticta citricarpa - (GUIGCI)

Situation du signalement

Final

Hôtes

Citrus spp

Pest Status (ISPM 8 - 2021)

• Present: not widely distributed and under official control

Distribution géographique

Parts of Central and North East Districts

Résumé

Citrus black spot (CBS) is a citrus disease caused by the fungus Phyllosticta citricarpa (previously known as Guignardia citricarpa). This fungus affects citrus plants throughout subtropical climates, reducing both fruit quantity and quality. It has a significant economic impact, mainly owing to the external blemishes that make citrus fruit unsuitable for the fresh market. Premature fruit drop caused by some infections may contribute to further economic loss. CBS can potentially be harmful in an area where it is not yet present. CBS is spread when wind-borne spores embed in the leaf litter under trees and are carried long distances by air currents. Rain splash may move spores short distances from infected fruit and/or leaf litter. Human-assisted movement of fruit and infected nursery stock is the main form of long distance movement.

The detection of CBS in Botswana called for an emergency incursion response which is accepted internationally and in accordance to the international standards. The management strategy for the pest has been drawn and implemented with immediate effect. The strategy involves 1) conducting a delimiting Survey 2) implementing eradication procedures and 3) Implementing internal controls and 4) Maintenance of pest free areas in Phikwe district, North West, Chobe, Ghanzi and Kgalagadi districts

Danger

The production capacity and fruit quality of affected citrus orchards is threatened.

Contact pour demandes d'information

Zachariah Mmoloki Mapetla @ [email protected] Patience Mawere @ [email protected]

Fichiers de rapports

Notification on the first detection of Citrus black spot in Botswana

Site web

Mots-clés associés au thème

Pest status:Present/Presence

Mots-clés associés à la marchandise

Citrus fruit, fresh or dried