The Agrometeorology Programme of the Soil, Climate and Water Campus of the Agricultural Research Council (ARC ∙ LNR) in South Africa, in collaboration with the DSSAT Foundation, organized a DSSAT training program from September 30 through October 4, 2019 at ARC Headquarters in Pretoria, South Africa. Twenty-nine participants from South Africa, Rwanda, Botswana, Swaziland, Mauritius, Zimbabwe, Chile, and the United Kingdom attended the workshop. Similar to other workshops, lectures on the underlying science of the Cropping System Model (CSM) were alternated with hands-on exercises on the operation of the Decision Support System for Agrotechnology Transfer (DSSAT) and its associated tools and utilities. The participants were able to successfully complete a case study on nitrogen fertilizer optimization for Zimbabwe on the final day. The workshop was organized by Dr. Mphehe Tongwane and Dr. Mokhele Moeletsi, Research Team Manager of the Agrometeorology Division. Training support was provided by Mrs. Wiltrud Durand, formerly with ARC and now with the Bureau for Food and Agricultural Policy (BFAP) and Professor Sue Walker. The DSSAT workshop preceded the 35th Annual Conference of the South African Society for Atmospheric Sciences that was held on October 8 and 9 in Vanderbijlpark (http://www.arc.agric.za/arc-iscw/SASASconference).