The Disease Management unit provides the following general strategies for management of tropical and subtropical crops diseases:
Exclude the pathogen - prevent inoculum from coming into an area where the pathogen does not occur (e.g. quarantines, inspections, certifications).
Eradicate the pathogen - remove or reduce inoculum (e.g. rotation, sanitation, eliminating alternate hosts, heat treatment, some pesticides).
Protect the healthy plant against infection - provide a "barrier" (chemical, biological or physical) between the host plant and pathogen.
Genetic resistance of the plant against the pathogen - grow a less susceptible host plant.
Avoidance - avoid development of a disease on a plant(s) even though it does occur in the area.
In addition the unit, provides an essential service to the national Citrus Improvement Programme (CIP) by elimi-nating viruses from citrus mother stock. In addition, this division perfected the technique of pre-immunising all citrus released to nurseries against citrus tristeza virus (CTV) by means of mild strain inoculation.
For enquiries regarding the current research activities of the Disease Management unit, contactDr Mbulelo Ncango.
Dr Mbulelo NcangoTel: 013 753-7009 | Fax: 013 752-3854Fax2mail: 086 503 6247Email: Ncangom@arc.agric.za
Graft transmissible disease of Citrus and Avocado Sunblotch Viroid disease indexing.
Maritha SchoemanTel: 013 753-7115Fax: 013 752-3854Email: Maritha@arc.agric.za
Epidemiology and control of Tropical and Subtropical diseases. Screening for resistance cultivars.
Thomas MoririTel: 013 753-7025Fax: 013 752-3854
Thabile SifundzaTel: 013 753-7025Fax: 013 752-3854
Zamangwane Dlamini Tel: 013 753-7124Fax: 013 752-3854Email: Zama@arc.agric.za
André Botha Tel: 013 753-7141Fax: 013 752-3854Email: AndreB@arc.agric.za
Ncobile ZuluTel: 013 753-7125Fax: 013 752-3854Email: ZuluN@arc.agric.za
Zanele ZwaneTel: 013 753-7114Fax: 013 752-3854Email: ZwaneZ@arc.agric.za
Epidemiology and management strategies of Avocado Sunblotch Viroid Disease
Nontokonzo KuneneTel: 013 753-7114Fax: 013 752-3854Email: KuneneN@arc.agric.za
Research project:Phytophthora cinnamomi, a comminatory disease of macadamia in South Africa
Yeast Isolation and identification to genus level
Analysis for Phytophthora and Pythium
Researchers of the Disease Management unit are currently involved in the following research projects:
Ncangom@arc.agric.za or Maritha@arc.agric.za
Postal address: ARC-ITSC, Private Bag X 11208, Mbombela, South Africa, 1200
Physical address: ARC-ITSC, Disease Management Unit, 3 Rivier Street , Mbombela, South Africa, 1201