Meloidogyne enterolobii, a threat to crop production with particular reference to sub-Saharan Africa: an extensive, critical and updated review

Nematology ◽  
2021 ◽  
pp. 1-39
Author(s):  
Raymond Lesley Collett ◽  
Mariette Marais ◽  
Mieke Daneel ◽  
Milad Rashidifard ◽  
Hendrika Fourie
Keyword(s):  
Crop Production ◽  
Management Strategies ◽  
Molecular Techniques ◽  
Sub Saharan Africa ◽  
Crop Damage ◽  
Future Research ◽  
Root Knot Nematode ◽  
Meloidogyne Enterolobii ◽  
Nematode Parasitism ◽  
Sub Saharan

Summary Crop damage inflicted by Meloidogyne enterolobii justifies an updated literature review focusing on recent discoveries about its identification, biology and management. Since its description in 1983, M. enterolobii has become a pest of great concern, particularly due to its virulence, which renders controlling this nematode pest a challenge. The global distribution of M. enteroblii is summarised, with emphasis placed on limited research done for the species in sub-Saharan Africa where food production and security is threatened by root-knot nematode parasitism. Novel advances in methods used to detect M. enterolobii are touched upon, especially the improvement in advanced molecular techniques that complements shortcomings in morphology and morphometic approaches. Despite these exciting developments, the employment of effective management strategies to combat the species remains problematic. Future research on various aspects of M. enterolobii is crucial, with focus to be placed on the use of available resources to contain damage caused by this species.

scholarly journals Precision Agriculture for Resource Use Efficiency in Smallholder Farming Systems in Sub-Saharan Africa: A Systematic Review

2021 ◽  
Vol 13 (3) ◽  
pp. 1158
Author(s):  
Cecilia M. Onyango ◽  
Justine M. Nyaga ◽  
Johanna Wetterlind ◽  
Mats Söderström ◽  
Kristin Piikki
Keyword(s):  
Resource Use ◽  
Precision Agriculture ◽  
Large Scale ◽  
English Language ◽  
Management Practices ◽  
Smallholder Farmers ◽  
Management Strategies ◽  
Sub Saharan Africa ◽  
Smallholder Farming ◽  
Sub Saharan

Opportunities exist for adoption of precision agriculture technologies in all parts of the world. The form of precision agriculture may vary from region to region depending on technologies available, knowledge levels and mindsets. The current review examined research articles in the English language on precision agriculture practices for increased productivity among smallholder farmers in Sub-Saharan Africa. A total of 7715 articles were retrieved and after screening 128 were reviewed. The results indicate that a number of precision agriculture technologies have been tested under SSA conditions and show promising results. The most promising precision agriculture technologies identified were the use of soil and plant sensors for nutrient and water management, as well as use of satellite imagery, GIS and crop-soil simulation models for site-specific management. These technologies have been shown to be crucial in attainment of appropriate management strategies in terms of efficiency and effectiveness of resource use in SSA. These technologies are important in supporting sustainable agricultural development. Most of these technologies are, however, at the experimental stage, with only South Africa having applied them mainly in large-scale commercial farms. It is concluded that increased precision in input and management practices among SSA smallholder farmers can significantly improve productivity even without extra use of inputs.

scholarly journals Prevalence and determinants of chronic kidney disease in women with hypertensive disorders in pregnancy in Nigeria: a cohort study

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Salisu M. Ishaku ◽  
Timothy Olusegun Olanrewaju ◽  
Joyce L. Browne ◽  
Kerstin Klipstein-Grobusch ◽  
Gbenga A. Kayode ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Gestational Hypertension ◽  
Monitoring Program ◽  
Sub Saharan Africa ◽  
Future Research ◽  
Hypertensive Disorders ◽  
Hypertensive Disorders In Pregnancy ◽  
Sub Saharan ◽  
In Pregnancy

Abstract Background Worldwide, hypertensive disorders in pregnancy (HDPs) complicate between 5 and 10% of pregnancies. Sub-Saharan Africa (SSA) is disproportionately affected by a high burden of HDPs and chronic kidney disease (CKD). Despite mounting evidence associating HDPs with the development of CKD, data from SSA are scarce. Methods Women with HDPs (n = 410) and normotensive women (n = 78) were recruited at delivery and prospectively followed-up at 9 weeks, 6 months and 1 year postpartum. Serum creatinine was measured at all time points and the estimated glomerular filtration rates (eGFR) using CKD-Epidemiology equation determined. CKD was defined as decreased eGFR< 60 mL/min/1.73m2 lasting for ≥ 3 months. Prevalence of CKD at 6 months and 1 year after delivery was estimated. Logistic regression analyses were conducted to evaluate risk factors for CKD at 6 months and 1 year postpartum. Results Within 24 h of delivery, 9 weeks, and 6 months postpartum, women with HDPs were more likely to have a decreased eGFR compared to normotensive women (12, 5.7, 4.3% versus 0, 2 and 2.4%, respectively). The prevalence of CKD in HDPs at 6 months and 1 year postpartum was 6.1 and 7.6%, respectively, as opposed to zero prevalence in the normotensive women for the corresponding periods. Proportions of decreased eGFR varied with HDP sub-types and intervening postpartum time since delivery, with pre-eclampsia/eclampsia showing higher prevalence than chronic and gestational hypertension. Only maternal age was independently shown to be a risk factor for decreased eGFR at 6 months postpartum (aOR = 1.18/year; 95%CI 1.04–1.34). Conclusion Prior HDP was associated with risk of future CKD, with prior HDPs being more likely to experience evidence of CKD over periods of postpartum follow-up. Routine screening of women following HDP-complicated pregnancies should be part of a postpartum monitoring program to identify women at higher risk. Future research should report on both the eGFR and total urinary albumin excretion to enable detection of women at risk of future deterioration of renal function.

scholarly journals Climate Smart Agriculture as Final Goal: Use of Improved Cereals Varieties in Cinzana, Mali.

2017 ◽  
Vol 5 (1) ◽  
pp. 50
Author(s):  
Kalifa TRAORE ◽  
Daouda SIDIBE ◽  
Harouna COULIBALY
Keyword(s):  
Food Security ◽  
Water Conservation ◽  
Crop Production ◽  
Heavy Rain ◽  
Sub Saharan Africa ◽  
Improved Varieties ◽  
Farmer Organizations ◽  
Conservation Technology ◽  
Sub Saharan ◽  
Smart Agriculture

Climate variability and change are recognized as the greatest challenge to crop production and food security in sub-Saharan Africa. This work assesses farmers’ perception on the contribution of improved varieties of sorghum and millet in the search for food security in Cinzana rural commune of Mali in the current context of climate change.The methodology was based on focus group surveys with both, the decentralized technical services, administrative and municipal authorities, NGOs, farmer organizations and producers but also farmer exchanges visits on improved varieties tested in farmer’s field.The result shows that climate change is described by the majority of farmers (87%) as decrease in rainfall amount and length of rainy seasons, high increases in temperature and high deforestation and water scarcity. Unpredictability of climate, (80%), drought (70%) and heavy rain (65%) occurrence were identified as major perception of farmers on risks in climate for crop production and soil degradation. After farmers’ study tour, 80% of the participants mentioned a better growth of plants and increase of soil moisture with the use of contour ridges tillage as a water conservation technology. Adapted cycle (55%) and higher yield (37%) of improved varieties were farmer’s main drivers for adoption of improved millet and sorghum varieties.The study revealed that local farmers have substantial knowledge on climate variabilities and risks and also are aware of some adaptation strategies. However, for wide scale adoption of effective strategies, capacity strengthening appeared a prerequisite.

scholarly journals Opportunities and Challenges in Realizing Universal Access to Obstetric Ultrasound in Sub-Saharan Africa

2017 ◽  
Vol 03 (02) ◽  
pp. E52-E59 ◽  
Author(s):  
Sikolia Wanyonyi ◽  
Charles Mariara ◽  
Sudhir Vinayak ◽  
William Stones
Keyword(s):  
Universal Access ◽  
Perinatal Outcomes ◽  
Sub Saharan Africa ◽  
Future Research ◽  
Obstetric Ultrasound ◽  
Integral Component ◽  
Challenges And Opportunities ◽  
Potential Benefits ◽  
The Subject ◽  
Sub Saharan

AbstractThe potential benefits of obstetric ultrasound have yet to be fully realized in sub-Saharan Africa (SSA), despite the region bearing the greatest burden of poor perinatal outcomes. We reviewed the literature for challenges and opportunities of universal access to obstetric ultrasound and explored what is needed to make such access an integral component of maternity care in order to address the massive burden of perinatal morbidity and mortality in SSA. Original peer-reviewed literature was searched in various electronic databases using a ‘realist’ approach. While the available data were inconclusive, they identify many opportunities for potential future research on the subject within the region that can help build a strong case to justify the provision of universal access to ultrasound as an integral component of comprehensive antenatal care.

scholarly journals Entrepreneurship education as human capital: Implications for youth self-employment and conflict mitigation in Sub-Saharan Africa

2018 ◽  
Vol 33 (1) ◽  
pp. 42-54 ◽  
Author(s):  
Paschal Anosike
Keyword(s):  
Human Capital ◽  
Youth Unemployment ◽  
Entrepreneurship Education ◽  
Structured Interview ◽  
School Curriculum ◽  
Sub Saharan Africa ◽  
Future Research ◽  
Secondary School Curriculum ◽  
Sub Saharan ◽  
Capital Development

Previous research has focused on stable developed economies to predict that human capital and entrepreneurship education (EE) provision at the higher education (HE) level will positively affect entrepreneurial success. This article draws on the outcome of recent EE projects in two HE institutions in a conflict-torn northern Nigeria as a proxy to advocate the introduction of entrepreneurship as a compulsory component into the secondary school curriculum in Sub-Saharan Africa. Using semi-structured interview data, it is found that the provision of EE at secondary education level could help to facilitate human capital development and assist efforts to curb youth unemployment. Specifically, the study suggests that EE comprises both generic and specific human capital that increases an individual’s ability to identify and exploit opportunities, particularly for young people, and in doing so helps to reduce their vulnerability to poverty and involvement in armed conflict. Suggestions for future research and policy considerations are provided.

scholarly journals Prevalence and Correlates of Pregnancy Self-Testing Among Pregnant Women Attending Antenatal Care in Western Kenya

2020 ◽  
Author(s):  
Nina Njeri Nganga ◽  
Julia Dettinger ◽  
John Kinuthia ◽  
Jared Baeten ◽  
Grace John-Stewart ◽  
...  
Keyword(s):  
Antenatal Care ◽  
Pregnant Women ◽  
Sub Saharan Africa ◽  
Future Research ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Western Kenya ◽  
Self Testing ◽  
Sub Saharan ◽  
Exposure Prophylaxis

Abstract In sub-Saharan Africa little is known about how often women use pregnancy self-tests or characteristics of these women despite evidence that pregnancy self-testing is associated with early antenatal care (ANC) attendance. Understanding the characteristics of women who use pregnancy self-tests may facilitate early access to ANC and preventive interventions in pregnancy. We conducted a cross-sectional survey on an ongoing pre-exposure prophylaxis (PrEP) implementation study which enrolled pregnant women to determine the prevalence and factors associated with pregnancy self-testing among women in western Kenya. Overall in our study population, the prevalence of pregnancy self-testing was 22% and higher among women who were employed, currently in school, had previous pregnancy complications, received services from urban health facilities, and had partners who had at least attended secondary school. The most reported reasons for non-use of pregnancy self-tests included not thinking it was necessary, lack of knowledge, and lack of money to pay for the test. Future research should focus on understanding the knowledge and attitudes of women toward pregnancy self-testing.

scholarly journals BARRIERS OF SMES’ SUSTAINABILITY IN SUB-SAHARAN AFRICA: A PLS-SEM APPROACH

2021 ◽  
Vol 9 (1) ◽  
pp. 10-24
Author(s):  
John Amoah ◽  
Abdul Bashiru Jibril ◽  
Bayuasi Nammei Luki ◽  
Michael Amponsah Odei ◽  
Charles Yawson
Keyword(s):  
Developing Countries ◽  
Developing Economies ◽  
Manufacturing Sector ◽  
Business Owners ◽  
Partial Least Square ◽  
Least Square ◽  
Sub Saharan Africa ◽  
Future Research ◽  
Global Business ◽  
Sub Saharan

Undoubtedly, entrepreneurial knowledge is a prerequisite for the survival of every business organization. To this, the contribution of Small and Medium Enterprises (SMEs) in the socio-economic development in most developing economies cannot be underestimated. Both developed and developing countries are living testimonies of their contributions to their nation’s growth and development. However, extant literature shows that as competition and innovation intensify in the global business market, many SMEs in developing countries are constrained by external forces that hinder the sustainability of these businesses.   Hence, this paper aims to find out the mitigating factors warranting SMEs’ sustainability from the viewpoint of entrepreneurs and business owners, particularly in the manufacturing sector of Ghana, a Sub-Saharan Africa region. To achieved this objective, the study deployed a simple random sampling technique with 370 valid responses through a structured questionnaire for the analysis. Relying on PLS-SEM (partial least square and structural modeling) with the aid of ADANCO 2.2.1 software version revealed that factors such as financial challenges, technology; market penetration & acceptability; and research & development are barriers facing SMEs sustainability in the Ghanaian manufacturing sector. This study would be beneficial to entrepreneurs and business owners of SMEs in most developing countries and provide deeper insight into the SME literature at large. This study would further strengthen SME entrepreneurs and business owners to fully devise strategies that can help them to override such migrating challenges and equipped them to effectively stay competitive in the long term for the firm’s growth and survival. The limitation and future research directions are equally presented in the paper.

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