scholarly journals A Model-Based Estimation of Resource Use Efficiencies in Maize Production in Nigeria

2019 ◽  
Vol 11 (18) ◽  
pp. 5114 ◽  
Author(s):  
Lopez ◽  
Kolem ◽  
Srivastava ◽  
Gaiser ◽  
Ewert
Keyword(s):  
Spatial Variability ◽  
Resource Use ◽  
Management Strategies ◽  
Fertilizer Application ◽  
Sub Saharan Africa ◽  
The South ◽  
Maize Production ◽  
The North ◽  
Use Efficiency ◽  
Sub Saharan

Food security is an increasingly serious problem worldwide, and especially in sub-Saharan Africa. As land and resources are limited and environmental problems caused by agriculture are worsening, more efficient ways to use the resources available must be found. The objective of this study was to display the spatial variability in crop yield and resource use efficiencies across Nigeria and to give recommendations for improvement. Based on simulations from the crop model LINTUL5 we analyzed the influence of fertilizer application on the parameters Water Use Efficiency (WUE), Fertilizer Use Efficiency (FUE), and Radiation Use Efficiency (RUE) in maize. High spatial variability was observed, especially between the north and the south of the country. The highest potential for yield improvement was found in the south. While WUE and RUE increased with higher rates of fertilizer application, FUE decreased with higher rates. In order to improve these resource use efficiencies, we suggest optimizing management strategies, demand-oriented fertilizer application, and breeding for efficient traits.

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 Nigeria: A Country Profile

2020 ◽  
Author(s):  
Emmanuel Ikechi Onah
Keyword(s):  
Ethnic Groups ◽  
Sub Saharan Africa ◽  
The South ◽  
Central Belt ◽  
Far North ◽  
The North ◽  
Minority Ethnic Groups ◽  
Sub Saharan ◽  
The Republic ◽  
Minority Ethnic

Nigeria is a sovereign country located in the area of West Africa bordering on the Gulf of Guinea. The country has a total area of 923, 769sq km (a little more than twice the size of California). Its physical size makes Nigeria the third largest country in Sub-Saharan Africa. The country’s terrain consists of the lowlands in the South with mountainous formations in the South-east, which merge into the hills and plateaus of the Central belt and the plains of the far north. The climate varies from the largely equatorial climates in the South to the tropical climates in the centre and the North (Ekoko, 1990). It is also the most populous country in Africa, with a population of about 160 million (2006 census), and a population growth rate estimate of 3%. The country is bordered on the west by the Republic of Benin and the Republic of Cameroon, on the south by the Atlantic Ocean, and on the north by Niger Republic and the Republic of Chad. Nigeria is endowed with numerous natural resources, the most important being petroleum and natural gas, found in the Niger Delta areas of the country. Coal, iron ore, tin, limestone, zinc, lead, gold, precious stones, and uranium are found across the country.There are many ethnic groups, roughly categorized into the majority ethnic groups and the minority ethnic groups. The majority groups are namely, the Hausa-Fulani of the North, the Yoruba of the South-west, and the Igbo of the South-east. The hundreds of so-called minority ethnic groups include the Igala, Tiv, Idoma, Junkun, Angas, Birom and others in the Central-belt, the Edo, Urhobo and Itshekiri in the Mid-west, the Ijaw, Efik, Ibibio and Ogoni in the South-south, and the Kanuri, Gwari and Kataf of the far-North. On the whole, it is estimated that the country has more than 250 ethnic groups (Osaghae, 1998). English is the official language in Nigeria, by virtue of the country being a former colony of Britain. Christianity, Islam and traditional beliefs are the religions in the country, and although there is no state religion, the various tiers of government in the country are often involved in aspects of some of these religions, including state sponsorships of annual Muslim and Christian pilgrimages to the Holy lands.    

scholarly journals Modeling the interplay between demography, social contact patterns, and SARS-CoV-2 transmission in the South West Shewa Zone of Oromia Region, Ethiopia

BMC Medicine ◽  
2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Filippo Trentini ◽  
Giorgio Guzzetta ◽  
Margherita Galli ◽  
Agnese Zardini ◽  
Fabio Manenti ◽  
...  
Keyword(s):  
Attack Rate ◽  
Reproduction Number ◽  
Demographic Factors ◽  
School Closure ◽  
Sub Saharan Africa ◽  
The South ◽  
South West ◽  
Mixing Patterns ◽  
Sub Saharan ◽  
Socio Demographic Factors

Abstract Background COVID-19 spread may have a dramatic impact in countries with vulnerable economies and limited availability of, and access to, healthcare resources and infrastructures. However, in sub-Saharan Africa, a low prevalence and mortality have been observed so far. Methods We collected data on individuals’ social contacts in the South West Shewa Zone (SWSZ) of Ethiopia across geographical contexts characterized by heterogeneous population density, work and travel opportunities, and access to primary care. We assessed how socio-demographic factors and observed mixing patterns can influence the COVID-19 disease burden, by simulating SARS-CoV-2 transmission in remote settlements, rural villages, and urban neighborhoods, under school closure mandate. Results From national surveillance data, we estimated a net reproduction number of 1.62 (95% CI 1.55–1.70). We found that, at the end of an epidemic mitigated by school closure alone, 10–15% of the population residing in the SWSZ would have been symptomatic and 0.3–0.4% of the population would require mechanical ventilation and/or possibly result in a fatal outcome. Higher infection attack rates are expected in more urbanized areas, but the highest incidence of critical disease is expected in remote subsistence farming settlements. School closure contributed to reduce the reproduction number by 49% and the attack rate of infections by 28–34%. Conclusions Our results suggest that the relatively low burden of COVID-19 in Ethiopia observed so far may depend on social mixing patterns, underlying demography, and the enacted school closures. Our findings highlight that socio-demographic factors can also determine marked heterogeneities across different geographical contexts within the same region, and they contribute to understand why sub-Saharan Africa is experiencing a relatively lower attack rate of severe cases compared to high-income countries.

scholarly journals Circular Bioeconomy Research for Development in Sub-Saharan Africa: Innovations, Gaps, and Actions

2021 ◽  
Vol 13 (4) ◽  
pp. 1926 ◽  
Author(s):  
Shiferaw Feleke ◽  
Steven Michael Cole ◽  
Haruna Sekabira ◽  
Rousseau Djouaka ◽  
Victor Manyong
Keyword(s):  
Gap Analysis ◽  
Farming Systems ◽  
Crop Productivity ◽  
Sub Saharan Africa ◽  
International Institute ◽  
The Public ◽  
Secondary Sources ◽  
Use Efficiency ◽  
Sub Saharan

The International Institute of Tropical Agriculture (IITA) has applied the concept of ‘circular bioeconomy’ to design solutions to address the degradation of natural resources, nutrient-depleted farming systems, hunger, and poverty in sub-Saharan Africa (SSA). Over the past decade, IITA has implemented ten circular bioeconomy focused research for development (R4D) interventions in several countries in the region. This article aims to assess the contributions of IITA’s circular bioeconomy focused innovations towards economic, social, and environmental outcomes using the outcome tracking approach, and identify areas for strengthening existing circular bioeconomy R4D interventions using the gap analysis method. Data used for the study came from secondary sources available in the public domain. Results indicate that IITA’s circular bioeconomy interventions led to ten technological innovations (bio-products) that translated into five economic, social, and environmental outcomes, including crop productivity, food security, resource use efficiency, job creation, and reduction in greenhouse gas emissions. Our gap analysis identified eight gaps leading to a portfolio of five actions needed to enhance the role of circular bioeconomy in SSA. The results showcase the utility of integrating a circular bioeconomy approach in R4D work, especially how using such an approach can lead to significant economic, social, and environmental outcomes. The evidence presented can help inform the development of a framework to guide circular bioeconomy R4D at IITA and other research institutes working in SSA. Generating a body of evidence on what works, including the institutional factors that create enabling environments for circular bioeconomy approaches to thrive, is necessary for governments and donors to support circular bioeconomy research that will help solve some of the most pressing challenges in SSA as populations grow and generate more waste, thus exacerbating a changing climate using the linear economy model.

scholarly journals A metric-based assessment of flood risk and vulnerability of rural communities in the Lower Shire Valley, Malawi

2015 ◽  
Vol 370 ◽  
pp. 139-145 ◽  
Author(s):  
A. J. Adeloye ◽  
F. D. Mwale ◽  
Z. Dulanya
Keyword(s):  
Rural Communities ◽  
Spatial Variability ◽  
Flood Risk ◽  
Flood Hazard ◽  
Sub Saharan Africa ◽  
Structured Interviews ◽  
Adaptation Measures ◽  
Flood Depth ◽  
Inundation Area ◽  
Sub Saharan

Abstract. In response to the increasing frequency and economic damages of natural disasters globally, disaster risk management has evolved to incorporate risk assessments that are multi-dimensional, integrated and metric-based. This is to support knowledge-based decision making and hence sustainable risk reduction. In Malawi and most of Sub-Saharan Africa (SSA), however, flood risk studies remain focussed on understanding causation, impacts, perceptions and coping and adaptation measures. Using the IPCC Framework, this study has quantified and profiled risk to flooding of rural, subsistent communities in the Lower Shire Valley, Malawi. Flood risk was obtained by integrating hazard and vulnerability. Flood hazard was characterised in terms of flood depth and inundation area obtained through hydraulic modelling in the valley with Lisflood-FP, while the vulnerability was indexed through analysis of exposure, susceptibility and capacity that were linked to social, economic, environmental and physical perspectives. Data on these were collected through structured interviews of the communities. The implementation of the entire analysis within GIS enabled the visualisation of spatial variability in flood risk in the valley. The results show predominantly medium levels in hazardousness, vulnerability and risk. The vulnerability is dominated by a high to very high susceptibility. Economic and physical capacities tend to be predominantly low but social capacity is significantly high, resulting in overall medium levels of capacity-induced vulnerability. Exposure manifests as medium. The vulnerability and risk showed marginal spatial variability. The paper concludes with recommendations on how these outcomes could inform policy interventions in the Valley.

scholarly journals Resource use efficiency of maize production with and without irrigation system in Kaski, Nepal

2020 ◽  
Vol 3 (2) ◽  
pp. 287-295
Author(s):  
Kapil Khanal ◽  
Kalika Bahadur Adhikari ◽  
Shiva Chandra Dhakal ◽  
Santosh Marahatta
Keyword(s):  
Production Function ◽  
Resource Use ◽  
Irrigation System ◽  
Structured Interview ◽  
Resource Use Efficiency ◽  
Microsoft Excel ◽  
Maize Production ◽  
Maize Productivity ◽  
Major Implication ◽  
Use Efficiency

The study examined the resource use efficiency of maize production in rainfed and irrigated conditions in Kaski, Nepal. It focused specially on the production function of maize, resource use efficiency and socioeconomic characteristics of the farmers. A well-structured interview schedule was used in this study. Out of the 368 households interviewed, 165 farmers cultivated maize and a total of 157 farmers (59 from irrigated and 98 from rainfed) provided useful data. The data analysis was done by using Microsoft excel and SPSS. Cobb-Douglas production function was used to determine the resource use efficiency of maize production.  Compared to rainfed system, maize productivity in irrigated system was higher despite the use of fewer input implying irrigation. Increase in seed use by 10% increased the yield by 1.9% in case of rainfed system and 0.05% in case of the irrigated system. The major implication for the study is that farmers should make proper utilization of their resources to achieve higher level of resource use efficiency.

scholarly journals CONTINENTAL MUSICOLOGY: DECOLONISING THE MYTH OF A SINGULAR “AFRICAN MUSIC”

2018 ◽  
Vol 10 (4) ◽  
pp. 177-193
Author(s):  
Thomas Mathew Pooley
Keyword(s):  
Sub Saharan Africa ◽  
Power Dynamics ◽  
Musical Structure ◽  
African Music ◽  
Popular Imagination ◽  
Ideal Types ◽  
Musical Identity ◽  
The North ◽  
Sub Saharan ◽  
And Function

The musical identity of the African continent is sustained in the popular imagination by the idea of its unity. This identity emerges from a constellation of ideas about Africa’s distinctiveness constructed by generations of scholars who have diminished its diversity to substantiate the claim that shared principles of musical structure and function in sub-Saharan cultures can be read as ideal types for the continent as a whole. The idea of a singular “African music” is predicated on the notion that African “traditional” music of precolonial origin in sub-Saharan Africa possesses a set of distinctive features that are essential to its identity. Musical cultures as diverse as Aka, Ewe, Shona, Yoruba, and Zulu are subsumed within a singular frame of reference; others that do not possess these features are, by implication, excluded. To make sense of this myth of a singular “African music” we must reckon with the universalising impulse that sustains it. This means interrogating the discursive formations out of which it has been fashioned. Whose interests does it serve? Taking a decolonial perspective on the power dynamics that structure global south-north relations in the academy, this article points to the ways in which the north perpetuates its authority and dominance over the south by subsuming others within its cultural and intellectual ambit. Decolonising “African music” means dismantling the hegemony of “continental musicology” and the myth of a singular “African music” that is its creation.

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