Survey of trunk pathogens in South African olive nurseries

Plant Disease ◽  
2020 ◽  
Author(s):  
Meagan Van Dyk ◽  
Chris Spies ◽  
Lizel Mostert ◽  
Francois Halleen
Keyword(s):  
South Africa ◽  
Process Management ◽  
Management Strategies ◽  
Long Distance ◽  
Inoculum Sources ◽  
The Status ◽  
Old Trees ◽  
Stage 1 ◽  
Olive Industry ◽  
Free Material

Several fungal trunk pathogens are associated with olive trunk diseases in South Africa. Little is known regarding the inoculum sources of these pathogens in the olive industry and no specific management strategies are in place. The aim of this study was to investigate the status of olive nurseries in South Africa, with regard to the presence of trunk pathogens in olive plant material, to determine whether nursery material can be considered inoculum sources contributing to long distance dispersal of these pathogens. Isolations were made from asymptomatic cuttings from mother blocks (Stage 1), asymptomatic and symptomatic rooted cuttings (Stage 2) and 1- to 2-year-old trees (Stage 3) of eight cultivars in two nurseries. Known olive trunk pathogens of Nectriaceae, Diaporthaceae, Botrysphaeriaceae, Togniniaceae, Phaeomoniellaceae and Pleurostomataceae were recovered. Neofusicoccum australe was detected in a single Stage 1 cutting. Stage 3 material showed the highest incidence of fungi from these families, with Pleurostoma richardsiae having the highest incidence in both nurseries (82.2% and 36.7% of the 1- to 2-year-old trees). Phaeoacremonium parasiticum was present in 28.9% of the trees from one nursery (Stage 3). The remaining pathogens occurred in 13.3% or less of the material. These results indicate that nursery propagation material from mother blocks harbour low levels of trunk pathogens, and that additional infections occur during the nursery process. Management strategies should focus on the prevention and elimination of infections in mother blocks, as well as during the propagation process to ensure pathogen-free material is delivered to producers.

scholarly journals The Alien Plants That Threaten South Africa’s Mountain Ecosystems

Land ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1393
Author(s):  
Kim Canavan ◽  
Susan Canavan ◽  
Vincent Ralph Clark ◽  
Onalenna Gwate ◽  
David Mark Richardson ◽  
...  
Keyword(s):  
South Africa ◽  
South African ◽  
Management Strategies ◽  
Plant Invasions ◽  
Alien Plants ◽  
Mountain Range ◽  
Invasive Alien Plants ◽  
Long Distance ◽  
Mountain Ranges ◽  
The Status

The six major mountain ranges in South Africa support critically important ecosystem services—notably water production—and are rich in biodiversity and endemism. These mountains are threatened by detrimental land uses, unsustainable use of natural resources, climate change, and invasive alien plants. Invasive alien plants pose substantial and rapidly increasing problems in mountainous areas worldwide. However, little is known about the extent of plant invasions in the mountains of South Africa. This study assessed the status of alien plants in South African mountains by determining sampling efforts, species compositions and abundances across the six ranges in lower-and higher-elevation areas. Species occurrence records were obtained from three databases that used various approaches (roadside surveys, citizen science observations, focused botanical surveys). Most mountain ranges were found to be undersampled, and species composition assessments were only possible for two ranges. The majority of abundant alien plants in both the lower- and higher-elevation areas were species with broad ecological tolerances and characterised by long distance seed dispersal. These prevalent species were mostly woody plants—particularly tree species in the genera Acacia, Pinus, and Prosopis—that are contributing to the trend of woody plant encroachment across South African mountains. We suggest improved mountain-specific surveys to create a database which could be used to develop management strategies appropriate for each mountain range.

Regional Development through Continual Improvement of Higher Education in Latín American Countries Case Study

2018 ◽  
Vol 5 (1) ◽  
pp. 89-101
Author(s):  
Jaime Rodrigo Moreno Vallejo ◽  
Fajardo Romo ◽  
Gabriel Frank
Keyword(s):  
Higher Education ◽  
Regional Development ◽  
Latin American ◽  
Process Management ◽  
Management Strategies ◽  
Balanced Score Card ◽  
University Management ◽  
Social Mission ◽  
Quality Of Higher Education ◽  
Latin American Countries

Abstract Aiming to promote the social mission of higher education and their integration in Latin American countries, this research has a qualitative focus and it has the objective to study the normative context and the main theoretical references for the assurance of the quality of higher education for Colombia and Ecuador, examines how the continuous improvement of higher education contributes to regional development; and proposes methodological strategies that contribute to the purpose for the regional development, in a systemic, objective, measurable and achievable in time way, like are the process management and the balanced score card for University Management Strategies and to built a public policy for Latin American Universities.

UN-BLURRING THE MYTHS AND REALITIES OF WOMEN AND CHILDREN’S RIGHTS IN SOUTH AFRICA

2017 ◽  
Vol 14 (2) ◽  
pp. 109-120
Author(s):  
T N Sithole ◽  
Kgothatso B Shai
Keyword(s):  
South Africa ◽  
Children's Rights ◽  
Theory And Practice ◽  
Children’S Rights ◽  
Vulnerable Groups ◽  
Great Awareness ◽  
Policy Theory ◽  
Rights Of The Child ◽  
The Status ◽  
Customary Practices

Awareness of the Convention on the Elimination of All Forms of Discrimination against Women (CEDAW 1979) and the Convention on the Rights of the Child (CRC 1989) is relatively high within academic and political circles in South Africa and elsewhere around the world. In South Africa, this can be ascribed mainly to the powerful women’s lobby movements represented in government and academic sectors. Women and children’s issues have been especially highlighted in South Africa over the last few years. In this process, the aforementioned two international human rights instruments have proved very useful. There is a gender desk in each national department. The Office on the Status of Women and the Office on Child Rights have been established within the Office of the President, indicating the importance attached to these institutions. These offices are responsible for co-ordinating governmental efforts towards the promotion and protection of women and children’s rights respectively, including the two relevant treaties. Furthermore, there is also a great awareness amongst non-Governmental Organisations (NGOs) in respect of CEDAW and CRC. This can be ascribed mainly to the fact that there is a very strong women’s NGO lobby and NGOs are actively committed to the promotion of children’s rights. Women are increasingly vocal and active within the politics of South Africa, but the weight of customary practices remains heavy. The foregoing is evident of the widening gap between policy theory and practice in the fraternity of vulnerable groups – children and women in particular.

The Legal Status of Local Government in South Africa under the New Constitutional Dispensation

2018 ◽  
Vol 33 (2) ◽  
Author(s):  
Mbuzeni Mathenjwa
Keyword(s):  
South Africa ◽  
Local Government ◽  
Legal Status ◽  
Case Law ◽  
The Status ◽  
History Of ◽  
The Republic ◽  
First Time

The history of local government in South Africa dates back to a time during the formation of the Union of South Africa in 1910. With regard to the status of local government, the Union of South Africa Act placed local government under the jurisdiction of the provinces. The status of local government was not changed by the formation of the Republic of South Africa in 1961 because local government was placed under the further jurisdiction of the provinces. Local government was enshrined in the Constitution of the Republic of South Africa arguably for the first time in 1993. Under the interim Constitution local government was rendered autonomous and empowered to regulate its affairs. Local government was further enshrined in the final Constitution of 1996, which commenced on 4 February 1997. The Constitution refers to local government together with the national and provincial governments as spheres of government which are distinctive, interdependent and interrelated. This article discusses the autonomy of local government under the 1996 Constitution. This it does by analysing case law on the evolution of the status of local government. The discussion on the powers and functions of local government explains the scheme by which government powers are allocated, where the 1996 Constitution distributes powers to the different spheres of government. Finally, a conclusion is drawn on the legal status of local government within the new constitutional dispensation.

scholarly journals The status of alien bamboos in South Africa

2021 ◽  
Vol 138 ◽  
pp. 33-40
Author(s):  
Susan Canavan ◽  
David M. Richardson ◽  
Johannes J. Le Roux ◽  
Scot A. Kelchner ◽  
John R.U. Wilson
Keyword(s):  
South Africa ◽  
The Status

Fatigue-management strategies among women with endometriosis in South Africa: a qualitative study

2021 ◽  
pp. 008124632110201
Author(s):  
Zamafiso Nombulelo Sibande ◽  
Rizwana Roomaney
Keyword(s):  
South Africa ◽  
South African ◽  
Psychosocial Intervention ◽  
Public Hospital ◽  
Management Strategies ◽  
Cognitive Strategies ◽  
Secondary Symptom ◽  
Face To Face ◽  
Fatigue Management ◽  
Insight Into

Fatigue is a common, secondary symptom of endometriosis that has not been qualitatively explored. We conducted individual, face-to-face interviews with 25 women in South Africa about their experiences of endometriosis-related fatigue. Participants were recruited at a public hospital in Cape Town and through several South African endometriosis organizations. Interviews were conducted in English and Afrikaans and ranged from 30 min to 1 hr 16 min in duration. All interviews were audio recorded and transcribed. Interviews were analyzed using thematic analysis. We found that both the experience of fatigue and fatigue-management strategies were highly personalized. Participants reported using a variety of cognitive strategies, such as planning, pacing, and pushing through their fatigue to reduce the levels of fatigue. Participants also employed physical strategies such as rest, dietary changes, using supplements, and exercise. We found that while participants often tried fatigue-management strategies suggested to them by others, they struggled to maintain these strategies even when they were successful. There are currently no interventions aimed at reducing endometriosis-related fatigue. The findings of this study provide insight into the management of fatigue in women with endometriosis and may be used to develop a psychosocial intervention for fatigue among women with the disease.

scholarly journals Context-Aware Business Process Management

2021 ◽  
Author(s):  
Jan vom Brocke ◽  
Marie-Sophie Baier ◽  
Theresa Schmiedel ◽  
Katharina Stelzl ◽  
Maximilian Röglinger ◽  
...  
Keyword(s):  
Business Process ◽  
Process Design ◽  
Context Awareness ◽  
Business Process Management ◽  
Process Management ◽  
Design Science ◽  
Status Quo ◽  
Context Aware ◽  
The Status ◽  
Successful Business

AbstractContext awareness is essential for successful business process management (BPM). So far, research has covered relevant BPM context factors and context-aware process design, but little is known about how to assess and select BPM methods in a context-aware manner. As BPM methods are involved in all stages of the BPM lifecycle, it is key to apply appropriate methods to efficiently use organizational resources. Following the design science paradigm, the study at hand addresses this gap by developing and evaluating the Context-Aware BPM Method Assessment and Selection (CAMAS) Method. This method assists method engineers in assessing in which contexts their BPM methods can be applied and method users in selecting appropriate BPM methods for given contexts. The findings of this study call for more context awareness in BPM method design and for a stronger focus on explorative BPM. They also provide insights into the status quo of existing BPM methods.

scholarly journals Identification of key target markets for intermodal freight transport solutions in South Africa

2010 ◽  
Vol 4 (1) ◽  
Author(s):  
Joubert Van Eeden ◽  
Jan Havenga
Keyword(s):  
South Africa ◽  
Freight Transport ◽  
Long Distance ◽  
Long Distance Transport ◽  
Freight Logistics ◽  
Segmentation Approach ◽  
Role Players ◽  
Growth Initiative ◽  
State Of Affairs ◽  
Distance Transport

The Accelerated and Shared Growth Initiative for South Africa (AsgiSA) identified South Africa's freight logistics challenges as among the key binding constraints on the country's growth aspirations. The research presented here points to the structural imbalance between road and rail freight transport as one of the key contributors to this state of affairs. Most long-distance corridor transport has been captured by road. However, long-distance transport is a market segment that is very suitable for intermodal transportation : rail is utilised for the high-density, long-distance component and road for the feeder and distribution services at the corridor end points. A market segmentation approach is developed to identify the corridors and industries that are natural candidates for such solutions, thereby paving the way for role-players and stakeholders to initiate a dialogue on the development of appropriate solutions.

scholarly journals Relative Contribution of Seed Tuber- and Soilborne Inoculum to Potato Disease Development and Changes in the Population Genetic Structure of Rhizoctonia solani AG 3-PT under Field Conditions in South Africa

Plant Disease ◽  
2018 ◽  
Vol 102 (1) ◽  
pp. 60-66 ◽  
Author(s):  
Norman Muzhinji ◽  
James W. Woodhall ◽  
Mariette Truter ◽  
Jacquie E. van der Waals
Keyword(s):  
South Africa ◽  
Rhizoctonia Solani ◽  
Gene Diversity ◽  
Seed Tuber ◽  
Management Strategies ◽  
Stem Canker ◽  
Molecular Techniques ◽  
Tuber Initiation ◽  
Fixation Index ◽  
Potato Disease

Understanding the contribution of seed tuber- and soilborne inocula of Rhizoctonia solani AG 3-PT in causing potato disease epidemics is an important step in implementing effective management strategies for the pathogen. A 2-year study was conducted to evaluate the contribution of each source of inoculum using an integrative experimental approach combining field trials and molecular techniques. Two distinct sets of genetically marked isolates were used as seed tuberborne and soilborne inocula in a mark-release-recapture experiment. Disease assessments were done during tuber initiation and at tuber harvest. Both inoculum sources were found to be equally important in causing black scurf disease, whereas soilborne inocula appeared to be more important for root and stolon infection, and seedborne inocula contributed more to stem canker. However, seed tuber-transmitted genotypes accounted for 60% of the total recovered isolates when genotyped using three polymerase chain reaction restriction fragment length polymorphism markers. The changes in population structure of the experimental R. solani population over the course of the growing season and across two growing seasons were investigated using eight microsatellite markers. The populations at different sampling times were somewhat genetically differentiated, as indicated by Nei’s gene diversity (0.24 to 0.27) and the fixation index (FST). The proportion of isolates with genotypes that differed from the inoculants ranged from 13 to 16% in 2013 and 2014, respectively, suggesting the possibility of emergence of new genotypes in the field. Because both soilborne and tuberborne inocula are critical, it is important to ensure the use of pathogen-free seed tubers to eliminate seed tuberborne inoculum and the introduction of new genotypes of R. solani for sustainable potato production in South Africa.

The Invasive Vespidae in South Africa: Potential Management Strategies and Current Status

2018 ◽  
Vol 26 (2) ◽  
pp. 267-285 ◽  
Author(s):  
C. van Zyl ◽  
P. Addison ◽  
R. Veldtman
Keyword(s):  
South Africa ◽  
Management Strategies ◽  
Current Status
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