The goal of this study was to investigate and identify the existing knowledge gaps on plant health systems of the national and provincial officials responsible for biosecurity issues and plant health matters at the Departments of Agriculture, Forestry and Fisheries (DAFF) in South Africa. In this study, stratified random sampling was used and a semi-structured questionnaire was used to collect data from 60 participants (30 each from national and provincial) from DAFF (scientists and inspectors), Department of Environmental Affairs (DEA) (biodiversity officers) and Provincial Departments of Agriculture (PDAs) (extension officers or agricultural advisors). The data was analysed statistically using the one-way frequency and Spearman's Rank correlation coefficients. The study revealed that 76.7% of the respondents at the national level have knowledge and understanding on plant health systems and only 36.7% of the PDAs respondents have such a level of knowledge. In terms of the relevant training on plant health matters, the majority of the respondents at the PDAs (80%) revealed that they were not receiving basic training on quarantine pests (pest identification and control), while only 20% of the respondents at the national authority indicated a lack of regular trainings. Thus, intensifying awareness and basic training on plant health matters, specifically for the extension officers and/or agricultural advisors, was found to be an effective tool to enhance knowledge capacity.

We evaluated the phytosanitary risk associated with illegal importation of pest-infested plant commodities into South Africa. Samples were collected from different South African ports of entry over 8 years (2011 to 2019) and data were analysed descriptively using Statistical Software Package. Pests were frequently detected on commodity species such as Citrus (18.31%), Zea mays (13.22%), Phaseolus vulgaris (12.88%), Musa spp. (9.15%) and Fragaria ananassa (5.08%). The highest number of pests intercepted occurred on fresh fruits (44.06%), followed by grains (26.44%) and vegetables (14.23%). The most intercepted organisms were Callosobruchus rhodesianus (7.79%), Dysmicoccus brevipes (7.11%), Callosobruchus maculates (6.10%) and Phyllosticta citricarpa (4.74%). The majority of intercepted organisms were non-quarantine organisms (70.50%), followed by pests of unknown status (17.28%), quarantine pests (10.84%) and potential quarantine pests (1.35%). Phyllosticta citricarpa, Bactrocera dorsalis, Spodoptera frugiperda and Prostephanus truncatus were the only quarantine pests intercepted in terms of South African regulatory status. The interception was mainly from southern African countries, particularly Mozambique, Zimbabwe and Eswatini. The findings present the level of phytosanitary risk associated with illegal importation and/or non-compliance in regard to plants and plant commodities from different countries through South African ports of entry. Crop production, biodiversity, food security, existing export markets, and access to new export markets could be threatened as importing countries may impose stringent phytosanitary measures to limit the chances of introduction and establishment of quarantine pests into their territories.

Plant health clinic is a mechanism in which farmers are able to access basic plant healthcare and services from relevant authority in relation to infested or suspected infested plants and plant products for diagnostic purposes. Plant health clinic is an integral part of the plant health system which provides early pest diagnostic and advisory services to farmers. In this paper, it can be further defined as a basic plant healthcare rendered to farmers to enhance and improve plant production thereby diagnosing plant pests and diseases with the aim of employing appropriate pest management strategy. In many countries, plant health clinics operators are extension experts, plant doctors, inspectors and scientists within government and NGOs. Extension support in particular is critical in the operation of plant health clinics. The purpose of this paper is to provide a global overview of plant clinic as a recent ways of plant diseases diagnosis. This paper concluded that plant health clinics are valuable tools which need to be adopted by various countries for smallholder farmers to understand more about plant pests and diseases as well as management strategy. To the contrary, many countries are dependent on national diagnostic services as opposed to basic plant healthcare which is more accessible to the smallholders. This review paper further revealed that plant health clinics’ knowledge, awareness, accessibility and satisfaction of the smallholder farmers are very important. Plant clinics may not efficiently and effectively operate in the absence of the aforementioned aspects. Plant clinics were found to be the most efficient way to reach smallholder farmers for advice.

A plant health clinic is a system in which under-resourced and smallholder farmers can access basic services of plant healthcare from a plant clinic in relation to infected or symptomatic plants and plant products for pest diagnostic and identification purposes. The factors that influence smallholder farmers’ awareness and accessibility to plant health clinics in the Vhembe District Municipality of Limpopo Province, South Africa were examined in this study. The study also identified the constraints of the plant clinics that prevent their effective utilization. Three-hundred and twenty smallholder farmers (n = 320) from the population of 1600 were interviewed through a semi-structured questionnaire. A multistage random sampling technique was employed to select the 320 smallholder farmers from 8 irrigation schemes in the study area. To ensure representation, all categories of smallholder farmers were included in the study. Descriptive statistics such as frequency and percentages and Logit regression model were employed for the data analyses. The results revealed that there is a statistically significant and positive relation between communication channels and plant clinics awareness and accessibility among smallholder farmers. The distance to plant clinics has a negative influence on the accessibility of plant clinics among the farmers; however, the accessibility of plant clinic improves when visits by extension officers or plant doctors to farmers increase. The study pointed out some challenges affecting the functionality of plant clinics, which could be resolved through an efficient and effective plant clinic framework that involves major role players. An efficient and effective plant clinic framework was therefore developed by the study to improve its usefulness for diagnosing plant pest symptoms and diseases. The study concluded that plant clinic framework was important and should be considered and adopted by policy makers within the government, research institutes, and other NGOs.

This paper presents existing linkages within the spheres of government on plant health institutional and legislative framework and further identifies the existing limitations and risks on the current existing framework on the plant health system. A survey was conducted in South Africa with the relevant scientists from the National Department of Agriculture, Land Reform and Rural Development (DALRRD) formerly known as the Department of Agriculture, Forestry and Fisheries (DAFF) and Department of Environment, Forestry and Fisheries (DAFF) formerly known as Department of Environmental Affair (DEA) as well as extensionist and agricultural advisors from 7 Provincial Departments of Agriculture (PDAs). The sample size of the study was 60 government officials from both the national and provincial departments of agriculture. A semi-structured questionnaire was used to collect the data. The data were analysed statistically using the one-way frequency and Spearman’s Rank correlation coefficients. This paper revealed that there were no formal linkages between the relevant national government and PDAs in terms of legislative and policy prescripts on plant health issues. The study further revealed that there is a need to establish a plant health unit to coordinate plant health matters from the National Plant Protection Organisation of South Africa. On the aspect of biosecurity legislative framework affecting food production and security as well as trade, the study found that there is no cross-referencing amongst relevant legislation; therefore, there is a need for harmonisation of relevant legislation.