Diagnostic Centre

Diagnostic Centre Manager:
Collaborating Researchers and Diagnosticians:

Dr. Providence Moyo (Fruit & Foliar, including Citrus Black Spot), Glynnis Cook and Kobus Breytenbach (Graft Transmissible Diseases), M.C. Pretorius and Dr. Jan van Niekerk (Soilborne Diseases), Dr. Wilma du Plooy (Postharvest Diseases), Dr. Tim Grout and Dr. Aruna Manrakhan (Integrated Pest Management), Johan Joubert (Cultivar Evaluation)

Research Conducted: 

The Diagnostic Centre is situated in Nelspruit and provides diagnostic and technical services to citrus fruit growers, other role players in the Citrus Industry and the Citrus Improvement Programme. Diagnostic services offered are summarised below:

Soilborne Diseases

  • Soil and root analysis for nematodes
  • Soil, root and water analysis for Phytophthora or Pythium
  • Bio-assay for advanced microbial degradation of nematicides
  • Contract evaluation of crop protection products

Graft Transmissible Diseases

  • Diagnosis through visual assessment, biological indexing, ELISA and PCR

Citrus Black Spot

  • Diagnosis through visual assessment, conventional and molecular techniques
  • Fungicide resistance screening
  • Market access support
  • Contract evaluation of crop protection products

Fruit & Foliar Diseases

  • Diagnosis through visual assessment, conventional and molecular techniques
  • Fungicide resistance screening
  • Fungicide spray deposition assessment
  • Contract evaluation of crop protection products

Postharvest Diseases

  • Diagnosis through visual assessment, conventional and molecular techniques
  • Fungicide resistance screening
  • Analysis of packhouse water samples
  • Contract evaluation of crop protection products

Horticulture

  • Internal fruit quality
  • Cultivar evaluation

Entomology

  • Diagnosis through visual assessment and conventional techniques
  • Red scale organophosphate resistance
  • Contract evaluation of crop protection products

More information on services and prices can be obtained from Elaine Bassoninfo-icon:

CRI-Diagnostic Centre
P O Box 28
Nelspruit, 1200

Telephone: +27 (0) 13 759 8000