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Breeding new sweetpotato genotypes combining elevated content of two antagonistic traits of high dry matter and beta-carotene content in a high root yield background
(2019)This study was embarked upon to stack two key but inversely associated sweetpotato traits (dry matter and beta-carotene content) through conventional breeding methods. Thirty-seven elite sweetpotato genotypes were evaluated for both traits, and 15 parents comprising five orange-, five yellow- and five white-fleshed genotypes were selected from the 37 for hybridization. Using bi-parental mating fashion, an F1 progeny population for both traits was developed. Of the 13 families developed, eight ... -
Analyse multi-niveaux des freins a l'adoption de la certification du cacao au Cameroun
(2019-12)Les exigences européennes sur la qualité du cacao conduisent au développement de la certification, pour améliorer la production et la gestion post-récolte des fèves. Cependant, la certification reste peu développée au Cameroun. Cet article mobilise le modèle de la transition sociotechnique pour analyser les déterminants d’adoption de la certification. Des entretiens auprès de 11 acteurs de la filière cacao ont été menés, ainsi qu’une enquête auprès de 90 producteurs. Les résultats mettent en exergue ... -
Diversity, use and production of farmers' varieties of common bean (Phaseolus vulgaris L., Fabaceae) in southwestern and northeastern Ethiopia
(2020)Legumes are a critical component of many agricultural systems and a major contributor to global food systems. Common bean (Phaseolus vulgaris L.) is the most widely grown legume crop in Ethiopia. It is an important source of food, income, and soil fertility management in southwestern (SW) and northeastern (NE) Ethiopia, and used as medicine, fodder, and honeybee forage in the NE. Diversity and use of farmers’ varieties of common bean (Phaseolus vulgaris) bean were investigated in five administrative ... -
Documenting museum records of west African Coccinellidae (Coleoptera) in Benin and Senegal
(2020)Background This work provides a preliminary inventory of West African Coccinellidae. This was based on the West African Coccinellidae (WAC) specimens in the holdings of insect collections at the Laboratoire de Zoologie des Invertébrés Terrestres at the Institut Fondamental d’Afrique Noire Cheikh Anta Diop (IFAN), Senegal and the Biodiversity Center at the International Institute of Tropical Agriculture (IITAB), Benin. New information A total of 129 species representing 11 tribes and 40 ... -
The AgResults Nigeria Aflasafe TM Challenge Project: 2019 annual report
(International Institute of Tropical Agriculture, 2020) -
The farmer segmentation tool: understanding the diversity of coffee farmers
(2019)The farmer segmentation approach was developed by the IITA research team in collaboration with partners. The approach combines quantitative and qualitative aspects to understanding the diversity of farmers within a community. On-farm resources are identified as well as a farmers’ level of entrepreneurship and willingness to invest in their priority crop. The farmer segmentation process identifies differences in farmers’ ability to invest in Good Agricultural Practices (GAPS) and Climate Smart ... -
The stepwise smartphone application: co-creation of innovative agricultural extension support tools
(2019)To support the roll-out of the Stepwise approach a Smartphone application was developed as a tool for use by impact partner extension workers. IITA partnered with Mango Tree, an educational, communication and design company based in Uganda (https://mangotreeuganda.org/) combining research and technical knowledge with creative expertise to develop an appealing and innovative application. IITA impact partners, Hanns R. Neumann Stiftung and Olam contributed insight on information delivery and field-based ... -
Middlemen: threat or opportunity for the Ugandan coffee value chain?
(International Institute of Tropical Agriculture, 2019) -
Scaling readiness concepts, practices, and implementation
(International Potato Center, 2020-01)Scaling Readiness is an approach that can support organizations, projects, and programs in achieving their ambitions to scale innovations and achieve impact. Scaling Readiness encourages critical reflection on how ready innovations are for scaling, and what appropriate actions could accelerate or enhance scaling. -
Stakeholders’ perceptions on sustainability transition pathways of the cocoa value chain towards improved livelihood of small-scale farming households in Cameroon
(2020)Given the persistent poor livelihood of cocoa-farming households, future climate predictions and the worldwide demand pressure for higher cocoa quality and productivity, there is still a strong need to find new approaches that guarantee a sustainable cocoa future in cocoa-producing countries amongst which Cameroon is one of them. This exploratory research investigates potential future pathways for the cocoa sector in Cameroon by mapping the perceptions of actors involved in the socio-technical ... -
Metabolite database for root, tuber, and banana crops to facilitate modern breeding in understudied crops
(2020)Roots, tubers, and bananas (RTB) are vital staples for food security in the world's poorest nations. A major constraint to current RTB breeding programmes is limited knowledge on the available diversity due to lack of efficient germplasm characterization and structure. In recent years large‐scale efforts have begun to elucidate the genetic and phenotypic diversity of germplasm collections and populations and, yet, biochemical measurements have often been overlooked despite metabolite composition ... -
Social-cognitive factors influencing household decisions to grow orange-fleshed sweet potato in Uganda
(2020-01)This study examined the role of social-cognitive factors in farmers’ decisions to cultivate orange-fleshed sweetpotato as a food-based approach to alleviating vitamin A deficiency among rural households in Uganda. Cross-sectional survey data collected from 341 randomly selected household level decision-makers drawn from two rural districts in Uganda were analysed using hierarchical regression. Perceived capability and perceived social approval significantly predicted household decisions to grow ... -
Characterizing fruit ripening in plantain and Cavendish bananas: a proteomics approach
(2020)The fruit physiology of banana cultivars other than Cavendish is poorly understood. To study the ripening process, samples were taken daily from plantain and Cavendish bananas and the ripening stages were determined. We present data from the green to the fully mature stage. By analyzing the protein abundances during ripening we provide some new insights into the ripening process and how plantains fruits are different. Multivariate analysis of the proteins was performed correlated to the starch ... -
Detection and diversity of maize yellow mosaic virus infecting maize in Nigeria
(2019-12)Maize yellow mosaic virus (MaYMV; genus Polerovirus; family Luteoviridae) was recently characterized from maize in China and subsequently detected in mixed infection with sugarcane mosaic virus (genus Potyvirus; family Potyviridae) in sugarcane and itch grass in Nigeria. This study was conducted to understand the status and genetic diversity of MaYMV in maize fields in the northern guinea savannah region of Nigeria. A survey was conducted in 2017 and maize (n = 90) and itch grass (n = 10) plants ... -
Endophytic animations to blossom sub-Saharan agriculture
(Woodhead Publishing, 2020)Sub-Saharan regions are exceptional ecosystems in which crop plants suffer from dual impairment of low soil fertility and gate crasher phytopathogens. Worldwide common practice of intensive agriculture with the use of agrochemical inputs is ground lacking truth for the small holder farmers of Sub-Saharan Africa (SSA) that are entirely committed on agriculture for their livelihoods. Considering economically and feasibility terms of food security for small holder farmers, an urgent switching on ... -
Efficiency of food-based attractants for monitoring tephritid fruit flies diversity and abundance in mango systems across three west African agro-ecological zones
(2019)Food baits are effective and widely used tools for monitoring diversity and abundance of tephritid fruit flies. Four food-baits—Nulure, BioLure, Mazoferm at 3 and 6%, and Torula yeast—were used in multi-lure traps over a 4-yr period in mango orchards in three Benin agro-ecological zones (AEZ) representing a large swath of environments in western Africa. Twelve tephritid fruit fly species were captured during the trials, with the highest richness in the Forest Savannah Mosaic (FSM), followed by the ... -
Gender norms and their implications for banana production and recovery in west Africa
(Emerald Publishing Limited, 2019-11-22)This study uses the social relations framework to explore gender norms and relations surrounding banana production and banana bunchy top disease (BBTD) containment in six pilot communities in Cameroon and Nigeria. The objective of the study is to understand how gender norms and relations shape and influence access to information and benefit-sharing of productive resources among men and women banana farmers and implications for banana production recovery in the BBTD-affected regions and disease ... -
Does institution type affect access to finance for cassava actors in Nigeria?
(2020)The cassava system in Nigeria is developing, with increasing attention to its potential positive outcomes. However, credit access is a major problem in expanding productive activities of the different actors across the value chains of cassava products. This study investigates the extent of access to credit by cassava actors with respect to the different financial institutions in the country using data obtained from a sample of 168 actors, including producers, processors, marketers, fabricators and ... -
Post-harvest technology change in cassava processing: a choice paradigm
(2020)This study employed a choice model to examine the factors influencing the choice of post-harvest technologies in cassava starch processing, using a sample of five hundred and seventy (570) processors in the forest and guinea savanna zones of Nigeria. In addition, the profitability of various post-harvest technologies in the study area was assessed using the budgetary technique while the impact of improved post-harvest technology on processors’ revenue and output was analysed using the average ... -
Documenting museum records of west African Coccinellidae (Coleoptera) in Benin and Senegal
(2020-01-17)Background This work provides a preliminary inventory of West African Coccinellidae. This was based on the West African Coccinellidae (WAC) specimens in the holdings of insect collections at the Laboratoire de Zoologie des Invertébrés Terrestres at the Institut Fondamental d’Afrique Noire Cheikh Anta Diop (IFAN), Senegal and the Biodiversity Center at the International Institute of Tropical Agriculture (IITAB), Benin. New information A total of 129 species representing 11 tribes and 40 ...




















