August / September 2022
Berry-colour Problem in Crimson Seedless
Are viruses to blame for the colouring problem in the Crimson Seedless table grape cultivar?
August / September 2025
Characterising bunches with machine vision
Things move fast during harvest season. Table-grape growers must have reliable information on bunch characteristics for each block to ensure the fruit is prepared and handled optimally. This requires ongoing assessment in each vineyard – a time-consuming and labour-intensive activity.
April / May 2022
Dekgewasse in Suid-Afrikaanse wingerde
Vername wetenskaplike Dr Johan Fourie gesels oor sy loopbaan en deel insigte uit meer as drie dekades van dekgewasnavorsing.
June / July 2022
Guidelines for the Judicious Irrigation of Table Grapes (According to stem water potential measurements)
Water resources are generally limited in most grape-growing regions, and inconsistent rainfall causes periodic droughts.
April / May 2022
Haplothrips on Table Grapes in the Northern Cape – Friend or foe?
Table grape production in the Northern Cape is primarily aimed at export, and markets set extremely high standards for the cosmetic appearance of grapes.
December 2021 / January 2022
Postharvest management of table grapes
On 31 August and 28 September 2021, SATI hosted and broadcast its first online seminar titled “Postharvest Seminar” which was targeted at South African table grape producers and exporters.
December 2019 / January 2020
Thrips Management in Table Grapes
Many growers struggle with thrips management because thrips are extremely small insects (1.5 – 2mm long) that are difficult to detect. Outbreaks also tend to be sporadic and often unpredictable, complicating management even further. To improve management, it is important…
June / July 2025
Unlocking grapevines’ natural defences
“Plants are constantly challenged by stressors, and they cannot actively escape. Therefore, they have developed sophisticated structures and mechanisms to survive,” says Ngakoana Raletsena.
Raletsena has been studying one of these mechanisms for her MSc.
“Plant cuticles cover the non-woody aerial plant organs,” she elaborates. “The cuticle consists of cutin and cuticular waxes, which are the main focus of my work.”