Research

Research

Cultar Research

Cultar Research

Insect monitoring and bio-control development

Insect monitoring and bio-control development

Research report 2020/2021
Insects associated with pecan trees, Carya illinoinensis: characterisation, impact and control Project overview (1 October 2020 – 30 September 2021) During this fiscal year, three principal objectives were pursued: (1) continue with insect surveys in the Hartswater, Prieska and Modimolle regions; (2) investigate the entomopathogenic fungi, Beauveria bassiana and Metarhizium anisopliae, as artificially-induced endophytes in pecan seedlings (establishment) and impact on pecan nut weight (trees); and (3) initiate pheromone-based surveillance and damage-correlation of African bollworm, Helicoverpa armigera, and false codling moth, Thaumatotibia leucotreta, in the Hartswater, Prieska and Jacobsdal regions.  
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Research Report 2019/2020
Insects associated with pecan trees, Carya illinoinensis: characterisation, impact and control Project overview (1 October 2019 – 30 September 2020)
  1. Insect Surveys
  2. Endophytes
  3. Pheromone-based surveillance and damage-correlation of false codling moth, Thaumatotibia leucotreta and African bollworm, Helicoverpa armigera
 
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Shapiro-Ilan et al Pecan Grower endophyte article 2020 jh 27 Oct
Initial Studies on Beneficial Fungi that Can Live Inside Pecan Trees and Provide Protection from Insects and Disease
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Research Report November 2017
Insects associated with pecan trees, Carya illinoinensis: characterisation, impact and control Project overview (December 2013 – June 2017):
  1. Surveys to characterise insect complex
  2. Field trials to quantify damage by bark stinkbug
  3. Field trials with different insecticide frequencies on nut set and development
 
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File Size: 424 KB
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Pecan diseases

Pecan Diseases

Pecan diseases and health risks in South Africa
A collaborative project, launched in 2017 between SAPPA and the University of the Free State (UFS) is focussing on the study and distribution of pecan diseases in South Africa: Part 1:
  • Pecan Scab
  • Black blotch and die-back
  • Alternaria black spot
  • White and brown rot
Part 2:
  • Black lesions on nuts (Chaetomium species)
  • Overall decline of pecan trees
  • Fungi associated with the shot hole borer
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File Size: 12 MB
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Format: Word Doc
File Size: 8 MB
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Fungal Diseases associated with pecans in South Africa - Booklet
  1. Pecan scab
  2. Die-back
  3. Black blotch
  4. Alternaria black spot
  5. Necrotic lesions around beetle galleries
  6. Overall decline
  7. White and brown rot
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File Size: 2 MB
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Polyphagous Shothole borer and fungus infesting Pecan trees

Polyphagous Shothole borer and fungus infesting Pecan trees

A collaborative research project between SAPPA and FABI started in 2018 investigating the PSHB on pecan nut orchards.

The project is on understanding the seasonal patterns as well as the rate of spread of the beetles, and also studying the long-term effects of the fungal infections caused by the PSHB

Water Research

Water Research

Water Research report 2021
Quantifying water use of mature pecan orchards in selected irrigation areas of the Northern Cape  – research report
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Research report 2020
Quantifying water use of mature pecan orchards in selected irrigation areas of the Northern Cape  – research report 2020
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Western Cape Pecan Research

Investigating the potential income and future water requirements of existing pecan orchards in the Western Cape

Investigating the potential income and future water requirements of existing pecan orchards in the Western Cape
Although pecans have been produced commercially in South Africa for a long time (1972), substantial commercial plantings...
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Zinc Research

Zinc Research

Role of zinc carriers in pecan production 2022
The production of pecan nuts in South Africa is currently expanding at a rapid rate. Pecan nuts became more profitable per hectare, which led producers to convert arable land used for cash (row) crops to establish pecan nut orchards. A total of 40 000 ha have already been planted across South Africa, most in the Northern Cape irrigation schemes. According to the American Pecan Council (APC), South Africa will produce more than 10 percent of global pecan nut production by 2027. As a result, South Africa will be the third-largest producer of pecan nuts in the world.
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Role of zinc carriers in pecan production
The production of pecan nuts in South Africa is currently expanding at a rapid rate. Pecan nuts became more profitable per hectare, which led producers to convert arable land used for cash (row) crops to establish pecan nut orchards. A total of 40 000 ha have already been planted across South Africa, most in the Northern Cape irrigation schemes. According to the American Pecan Council (APC), South Africa will produce more than 10 percent of global pecan nut production by 2027. As a result, South Africa will be the third-largest producer of pecan nuts in the world. 
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File Size: 335 KB
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