University of Johannesburg

About: University of Johannesburg is a education organization based out in Johannesburg, South Africa. It is known for research contribution in the topics: Population & Context (language use). The organization has 8070 authors who have published 22749 publications receiving 329408 citations. The organization is also known as: UJ.

Biostimulants for Plant Growth and Mitigation of Abiotic Stresses: A Metabolomics Perspective.

Abstract: Adverse environmental conditions due to climate change, combined with declining soil fertility, threaten food security. Modern agriculture is facing a pressing situation where novel strategies must be developed for sustainable food production and security. Biostimulants, conceptually defined as non-nutrient substances or microorganisms with the ability to promote plant growth and health, represent the potential to provide sustainable and economically favorable solutions that could introduce novel approaches to improve agricultural practices and crop productivity. Current knowledge and phenotypic observations suggest that biostimulants potentially function in regulating and modifying physiological processes in plants to promote growth, alleviate stresses, and improve quality and yield. However, to successfully develop novel biostimulant-based formulations and programs, understanding biostimulant-plant interactions, at molecular, cellular and physiological levels, is a prerequisite. Metabolomics, a multidisciplinary omics science, offers unique opportunities to predictively decode the mode of action of biostimulants on crop plants, and identify signatory markers of biostimulant action. Thus, this review intends to highlight the current scientific efforts and knowledge gaps in biostimulant research and industry, in context of plant growth promotion and stress responses. The review firstly revisits models that have been elucidated to describe the molecular machinery employed by plants in coping with environmental stresses. Furthermore, current definitions, claims and applications of plant biostimulants are pointed out, also indicating the lack of biological basis to accurately postulate the mechanisms of action of plant biostimulants. The review articulates briefly key aspects in the metabolomics workflow and the (potential) applications of this multidisciplinary omics science in the biostimulant industry.

Implementing inclusive education in South Africa: teachers’ attitudes and experiences

Abstract: The central argument is that the creation of inclusive schools will require more than merely the implementation of new policies. Practising teachers are the key to the successful implementation of an inclusive system and they will need time, ongoing support and in-service training. Real change therefore requires a long-term commitment to professional development. This article presents a comparative analysis of the findings of three independent studies aimed at identifying and describing teachers' attitudes to and experiences in implementing inclusive education in South Africa. The main themes identified in all three studies include inadequate knowledge, skills and training for the implementation of inclusive education; lack of educational and teacher support; insufficient facilities and resources, and the potential effects of inclusive education on learners. Die implementering van insluitende onderwys in Suid-Afrika : onderwysers se houdings daarteenoor en ervaring daarvan Die sentrale argument is dat die ontwikkeling van insluitende skole omvattende verandering vereis wat meer behels as die blote implementering van die nuwe onder-wysbeleid. Onderwysers speel 'n beslissende rol in die suksesvolle implementering van 'n insluitende onderwyssisteem, mits voldoende tyd, ondersteuning en indiensopleiding aan hulle beskikbaar is. Daadwerklike verandering vereis dus langtermyn professionele ontwikkeling van onderwysers. Hierdie artikel vergelyk die bevindinge van drie onafhanklike voorstudies wat fokus op die identifisering en beskrywing van onderwysers se houdings teenoor die nuwe stelsel en hulle ervarings van die implementering van insluitende onderwys in Suid-Afrika. Die hooftemas van hierdie studies sluit in: ontoereikende kennis aangaande die nuwe stelsel; vaardighede en opleiding benodig om insluiting te implementeer; ontoereikende steun aan onderwysers in hierdie verband; onvoldoende fasiliteite en bronne om die nuwe stelsel te implementeer; en die potensiele invloed van insluiting op die leerders.

Payments for ecosystem services as neoliberal conservation: (Reinterpreting) evidence from the Maloti-Drakensberg, South Africa

Abstract: Payments for ecosystem/environmental services (PES) interventions aim to subject ecosystem conservation to market dynamics and are often posited as win-win solutions to contemporary ecological, developmental and economic quagmires. This paper aims to contribute to the heated debate on PES by giving contrasting evidence from the Maloti-Drakensberg area, a crucial site for water and biodiversity resources in southern Africa. Several PES initiatives and studies, especially those associated with the Maloti-Drakensberg Transfrontier Project (MDTP), claim that an 'ecosystem services' market in the area is feasible and desirable. Based on empirical research in the area between 2003 and 2008, the paper challenges these assertions. It argues that the internationally popular PES trend provided an expedient way for the MDTP implementers to deal with the immense socio-political and institutional pressures they faced. Following and in spite of, tenuous assumptions and one-sided evidence, PES was marketed as a 'success' by the MDTP and associated epistemic communities that are implicated in and dependent on, this 'success'. The paper concludes that PES and the process by which it was marketed are both inherent to 'neoliberal conservation'-the paradoxical idea that capitalist markets are the answer to their own ecological contradictions.