Indigenous and traditional food crops (ITFCs) are essential to initiatives aimed at increasing food and nutrition security and diversifying the food supply. Therefore, this study sought to evaluate the benefits associated with ITFCs, particularly for food security. The Vigna subterranea (Bambara groundnut), Vigna unguiculata (Cowpea), Colocasia esculenta (Taro), and Sinapis arvensis (Wild mustard) are examples of indigenous crops that were introduced for food security in Southern Africa. This review assessed the advantages of indigenous crops for food security and examined literature, reports, and case studies from 2009 to 2024 using academic databases, like Scopus, Web of Science, JSTOR, Google Scholar, and AGRIS, to assess how indigenous crops impact on food security and the benefits thereof. The primary inclusion criteria were nutritional, economic and environmental impacts of these indigenous crops for food security in Southern Africa. The review concludes that maximizing these benefits requires removing obstacles through capacity-building and policy reforms. The need to integrate precision agriculture to increase production of indigenous crops should be considered and the coherent use of food crops associated with food security must be developed by the government. A comprehensive strategy centered on investment in sustainable farming and climate smart agriculture is recommended to ensure food security.

The semi-arid and dry regions of South Africa experience shortages of water resources, which poses major challenges to livelihoods exacerbated by climate change. Despite the importance of indigenous food crops in optimizing water conservation, limited research has been conducted on effective strategies for promoting indigenous crops. This paper explores the potential of indigenous crops in optimizing water conservation in South Africa. This review paper adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses checklist to ensure transparency, rigor, and reproducibility. A comprehensive literature search was conducted across several databases, including Scopus, Web of Science, and Google Scholar. This review found that indigenous crops, such as sorghum and cowpeas, have innate traits that enable them to flourish in environments where water resources are limited. According to the findings of this study, these indigenous crops are resilient to drought and optimize water use efficiency. This review recommends the creation of a national database for indigenous climate-resilient food crops, which can act as an information hub for research and development. In maximizing the water use efficiency of indigenous crops, sustainable water management techniques remain critical. The results of this study have important implications for sustainable agriculture and water conservation in South Africa.

The precipitation pattern in South Africa is unpredictable and irregularly distributed across the nine provinces. Water resources support agriculture, mining activities, and other social and economic activities in the country. Nevertheless, South Africa is a water-scarce country prompting the urgent need for revitalization to increase water availability. There are major issues with irrigation water security in South Africa’s agriculture sector. Water scarcity, exacerbated by population growth, climate change, and wasteful use, threatens smallholder farmers’ livelihoods. Smallholder farmers encounter difficulties obtaining water despite initiatives to enhance water management, such as poor infrastructure, a lack of funding, and exclusion from choices about water management. This study examines the current water security challenges faced by smallholder farmers in ensuring water security in South Africa. It emphasizes the importance of collaborative networks, inclusive water governance, and innovative irrigation technologies. The study highlights the need for programs and policies that promote cutting-edge irrigation technologies and support smallholder farmers’ participation in water management decisions. Effective solutions require a coordinated approach, involving government, NGOs, and the private sector. Addressing these challenges can improve water security, promote sustainable agricultural development, and enhance food security nationwide effectively and efficiently. Additionally, the study suggests that context-specific solutions be developed, considering the requirements and difficulties smallholder farmers face. This entails funding irrigation infrastructure, assisting and training farmers, and advancing water-saving innovations.

Climate-smart agriculture (CSA) is a transformative approach to farming that aims to meet the demands of increasing food production under the growing pressures of climate change. CSA’s goals are to boost agricultural productivity, enhance resilience to climate impacts, and reduce greenhouse gas emissions. Thus, the study explored farmers’ socio-demographic factors influencing the adoption of CSA in sustainable crop production. The study was carried out in Bushbuckridge, Mpumalanga province of South Africa, with a focus on smallholder crop producers in the area. The study surveyed 300 smallholder farmers and employed simple random sampling, structured questionnaires, and a binary logistic regression model for data analysis. The significant and positive socio-demographic variables relevant to the adoption of climate-smart practices were level of education (p < 0.014), household size (p < 0.007), farm experience (p < 0.053), and farmland fertility (p < 0.047). Therefore, for CSA practices to be adopted by smallholder crop producers, a targeted approach is needed to address this issue. Therefore, support and training are needed to bridge the literacy gap among smallholder crop producers with the overall aim of improving their understanding of climate change and CSA practices that can mitigate the effects of climate change.

The study investigated the relationship between smallholder farmers’ socioeconomic characteristics and their choice to implement formal water management systems in the context of agricultural output in Numbi, Mpumalanga Province, South Africa. Numbi is a farming community situated in the Mbombela Local Municipality within the Ehlanzeni District Municipality of Mpumalanga Province. The study featured 141 smallholder farmers who were chosen using a straightforward random sampling method. A systematic and structured questionnaire was used to collect the data, and binary logistic regression was used to analyze the acceptability of formal water management systems among smallholder farmers. The results revealed statistically significant relationships with gender (p = 0.025), age (p = 0.186), educational level (p = 0.087), farm size (p = 0.151), household size (p = 0.041), and the use of alternative irrigation (p < 0.001). These findings underscore the importance of socioeconomic factors in influencing smallholder farmers’ openness to adopting formal water management systems. The study, therefore, recommends that policymakers, extension agents, and other stakeholders should prioritize farmer socioeconomic factors when advocating for the acceptance of formal water management systems. Hence, water-use efficiency, increased crop yields, and livelihood security will be eminent, thus improving the overall farmer quality of life in the study area.

Smallholder farmers in South Africa face issues related to water shortages and poor irrigation water management. This study investigated barriers to improving water-use efficiency (WUE) in smallholder production practices in Numbi, South Africa. The objectives were to identify barriers in redesigning production practices for higher agricultural productivity and analyze the relationship between irrigation water supply and the adoption of WUE methods. From a population of 7696 people, 141 smallholder farmers were sampled using a simple random sampling technique through Taro Yamane’s sample size formula. The data were analyzed using Pearson’s correlation coefficient and descriptive statistics. Unreliable water supply (M = 3.78, SD = 0.85), poor soil water retention (M = 3.78, SD = 0.85), lack of water-efficient irrigation systems (M = 3.91, SD = 0.71), lack of water storage facilities (M = 3.85, SD = 0.93), limited access to credit (M = 4.09, SD = 0.85), income instability due to market fluctuations (M = 3.96, SD = 0.91), inadequate knowledge of irrigation management (M = 4.00, SD = 0.84), and harsh climatic factors were identified. A positive correlation (r = 0.339, n = 141, p < 0.001) between irrigation water source and WUE techniques was evident, indicating that irrigation water source had an insignificant impact on WUE methods. Resolving these barriers requires a holistic approach focusing on investments in irrigation infrastructure and targeted education initiatives by extension agents and other stakeholders, as this can enhance agricultural productivity.