Integrated Plant Nutrient Management in Sub-Saharan Africa. Edited by B. Vanlauwe, J. Diels, N. Sanginga and R. Merckx. Wallingford, UK: CABI Publishing, with Ibadan, Nigeria: International Institute of Tropical Agriculture (2002), pp. 352, £55.00. ISBN 0-85199-576-4.

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.

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Genetic diversity in Bambara groundnut (Vigna subterranea L.) germplasm revealed by RAPD markers

Genome ◽

10.1139/g01-096 ◽

2001 ◽

Vol 44 (6) ◽

pp. 995-999 ◽

Cited By ~ 25

Author(s):

H I Amadou ◽

P J Bebeli ◽

P J Kaltsikes

Keyword(s):

Genetic Diversity ◽

Cluster Analysis ◽

Rapd Markers ◽

Random Amplified Polymorphic Dna ◽

Geographic Origin ◽

Bambara Groundnut ◽

International Institute ◽

Tropical Agriculture ◽

Vigna Subterranea ◽

Ibadan Nigeria

Random amplified polymorphic DNA (RAPD) markers were used to assess genetic diversity in Bambara groundnut (Vigna subterranea L.) germplasm using 25 African accessions from the collection in the International Institute for Tropical Agriculture, Ibadan, Nigeria. Fifty random decamer primers were screened to assess their ability to detect polymorphism in bambara; 17 of them were selected for this study. Considerable genetic diversity was found among the V. subterranea accessions studied. The relationships among the 25 accessions were studied by cluster analysis. The dendrograms showed two main groups of accessions mainly along the lines of their geographic origin. It is concluded that RAPD can be used for germplasm classification in bambara groundnut and hence for improving this crop.Key words: germplasm, PCR, RAPD, Vigna subterranea.

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The Role of Integrated Nutrient Management System for Improving Crop Yield and Enhancing Soil Fertility under Small Holder Farmers in Sub-Saharan Africa: A Review Article

Modern Concepts & Developments in Agronomy ◽

10.31031/mcda.2018.02.000547 ◽

2018 ◽

Vol 2 (5) ◽

Author(s):

Geremew Biramo

Keyword(s):

Soil Fertility ◽

Crop Yield ◽

Nutrient Management ◽

Review Article ◽

Sub Saharan Africa ◽

Integrated Nutrient Management ◽

Small Holder Farmers ◽

Sub Saharan ◽

Small Holder

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Evaluation of Nutritional and Antinutritional Properties of African Yam Bean (Sphenostylis stenocarpa (Hochst ex. A. Rich.) Harms.) Seeds

Journal of Food Quality ◽

10.1155/2020/6569420 ◽

2020 ◽

Vol 2020 ◽

pp. 1-11

Author(s):

Taofeek T. Adegboyega ◽

Michael T. Abberton ◽

AbdelAziz H. AbdelGadir ◽

Mahamadi Dianda ◽

Busie Maziya-Dixon ◽

...

Keyword(s):

Protein Content ◽

Protein Energy Malnutrition ◽

Research Field ◽

Sub Saharan Africa ◽

International Institute ◽

African Yam Bean ◽

Protein Energy ◽

Small Holder Farmers ◽

Sub Saharan ◽

Sphenostylis Stenocarpa

African yam bean (Sphenostylis stenocarpa (Hochst ex. A. Rich.) Harms) is an annual legume with the capacity to produce bean seeds in a pod and produce tubers with varying seed patterns and colors. It is suggested to have the potential to significantly boost food security in sub-Saharan Africa due to its considerable nutritional qualities but still yet underutilized. Many farmers show limited interest in its production owing to limited knowledge of its nutritional profile, income generation capacity for small-holder farmers’, processing, and other related utilization concerns. This study evaluated the proximate and antinutrient composition of processed and unprocessed seeds of African yam bean (Sphenostylis stenocarpa (Hochst ex. A. Rich.) Harms.). Seeds were harvested from the experimental research field consisting of 50 accessions at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. They were divided into two portions; the first was processed by oven drying at 60°C for 24 hours and the second was left raw. There were significant differences (P<0.05) in the levels of proximate and antinutrient in the forms in which the samples were analyzed. TSs104 had the highest protein content of 25.08%, while the lowest was TSs68 (20.50%). However, in the unprocessed seed, protein content ranged between 24.93% (TSs38) and 19.13% (TSs11). Both processed and unprocessed seeds had high carbohydrate contents. In processed seeds, TSs9 (62.93%) had the highest percentage and TSs1 (29.64%) recorded the lowest. In unprocessed seed, the percentage ranged between 67.36% (TSs4) and 54.23% (TSs38). The observed variation may suggest possible suitability of seed for various end-use products and targeted breeding programs for crop improvements. In sub-Saharan Africa, this lesser-known legume could be adapted as a promising food crop in combating protein-energy malnutrition.

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