Research: Fruit & Foliar Diseases

Programme Coordinator:
Dr Tian Schutte

Collaborating researchers involved:
Dr. Paul Fourie (CRI), Gideon van Zyl (SU)

Research and services on all pre-harvest leaf and fruit diseases other than citrus black spot, and most specifically on Alternaria brown spot, Phytophthora brown rot and Pseudocercospora fruit and leaf spot, and focuses on the aspects summarised below:

Market Access

  1. Adherence to permitted MRL levels
  2. Packaging of local and international research findings to facilitate market access negotiations

Etiology + Diagnosis

  1. Develop detection techniques to facilitate rapid detection and diagnosis
  2. Characterise variability in pathogen populations
  3. Facilitate awareness to ensure early-detection of new invasive pathogens


  1. Study epidemiological aspects that would facilitate improvement of management strategies

Disease management

  1. Evaluation of novel and GRAS chemical compounds and biocontrol agents for disease control
  2. Structuring of spray programmes to improve control, adhere to MRL and limit fungicide resistance
  3. Prevention of phytotoxicity following spray application
  4. Optimisation of spray application in orchards
  5. Heritable or induced host resistance mechanisms

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