Victor M. Manyong

Victor M. Manyong
Consultative Group on International Agricultural Research | CGIAR · International Institute of Tropical Agriculture (IITA)

PhD

About

201
Publications
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5,032
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Publications

Publications (201)
Article
Full-text available
It is widely recognized that female farmers have considerably less access to productive assets and support services than male farmers. There is limited evidence of gender gaps in technology adoption and agricultural productivity after accounting for the differential access to factors of production between males and females. This study investigates...
Article
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Poverty persists in many developing countries, including Nigeria, owing to inadequate infrastructure, unemployment, or poor working conditions, among other factors. Youth poverty and vulnerability to poverty have been identified to prevalent among the young population. Using an endogenous switching probit regression approach, in this study, we eval...
Article
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This article assesses the opinions of youth tomato growers on the accessibility of agricultural credit and factors that influence the accessibility in the Democratic Republic of the Congo (DRC). Data originated from a household survey for the 2019/2020 farming season. We interviewed 218 youth tomato growers from 6 horticulture production zones in t...
Article
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There is growing mobility of rural youth mainly caused by limited access to land resources and inadequacy of job opportunities. Increased population density coupled with low education rates has increased pressure on natural resources, especially land. This paper assessed the effect of land inheritance on youth migration and employment in Rwanda usi...
Article
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https://www.heraldopenaccess.us/openaccess/nigeria-zero-hunger-iita-policy-brief-no-3-nigeria-zero-hunger-strategic-review-nutritional-status-of-children-under-the-age-of-5-in-ogun-state-nigeria
Article
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https://www.heraldopenaccess.us/openaccess/nigeria-zero-hunger-iita-policy-brief-no-4-nigeria-zero-hunger-strategic-review-nutritional-status-of-children-under-the-age-of-5-in-sokoto-state-nigeria
Article
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https://www.heraldopenaccess.us/openaccess/nigeria-zero-hunger-iita-policy-brief-no-5-nigeria-zero-hunger-strategic-review-nutritional-status-of-children-under-the-age-of-5-in-kebbi-state-nigeria
Article
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https://www.heraldopenaccess.us/openaccess/nigeria-zero-hunger-iita-policy-brief-no-2-nigeria-zero-hunger-strategic-review-nutritional-status-of-children-under-the-age-of-5-in-ebonyi-state-nigeria
Article
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https://www.heraldopenaccess.us/openaccess/nigeria-zero-hunger-iita-policy-brief-no-1-nigeria-zero-hunger-strategic-review-nutritional-status-of-children-under-the-age-of-5-in-benue-state-nigeria
Article
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With data from 683 systematically selected households, the study employed the Heckman two-stage model and the propensity score matching method (PSM) to examine the impact of youth participation in agriculture as a primary occupation on income and poverty in Nigeria. The results indicate that the gender of the youth and their determination to stay i...
Article
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The increasing rate of youth unemployment in Africa, particularly in Nigeria, remains among the challenges to social and economic stability. Accordingly, the Nigerian government implemented several interventions, including the Youth-in-Agribusiness (YIA) program to reduce youth unemployment. However, the effect of these programs on gainful employme...
Article
Improved soybean varieties and agronomic practices have been widely disseminated to smallholder farmers in Malawi over the last 15 years. However, there is no empirical evidence on the welfare impacts of adopting improved soybean technologies. This paper estimated the poverty impacts of adopting improved soybean technologies using data from 1,234 h...
Article
Increasing agricultural productivity by promoting high-yielding and micronutrient-rich crop varieties has the potential to reduce poverty and malnutrition. However, getting these technologies into the hands of smallholders remains a challenge. This paper presents results from a randomised field experiment that uses rural primary schools as dissemin...
Article
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Although the agri-food sector has a huge potential to offer attractive employment opportunities for Africa’s burgeoning youth, a negative perception of agriculture persists among Cameroonian youths, such as in many other African countries. The paper assesses the determinants of university students’ choices and preferences for agricultural sub-secto...
Article
This article presents findings from baseline surveys in 5 states of Nigeria to assess the nutritional outcomes on target groups on attaining the UN Sustainable Development Goal 2. The augmented regression technique was applied to analyze data from a sample of 1642 households with at least 1 child under the age of 5 years (U5) and their mothers or c...
Preprint
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Ending hunger, and ensuring sustainable production and consumption patterns globally, as set out in the United Nations 2030 agenda of sustainable development goals (SDGs), can hardly be achieved under the current linear model of resource use, that has been proved nonrestorative and unstainable. An alternative and more sustainable model of resource...
Article
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The proponents of the entrepreneurial motivation dichotomy have argued that opportunity-driven entrepreneurs are more likely to succeed and sustain in entrepreneurship, unlike people who start-up businesses out of necessity. However, disagreement still exists on why and under which conditions the former might outperform the latter. This research co...
Article
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The Democratic Republic of the Congo (DRC) is a country with a high agricultural productivity potential; however, the agribusiness sector remains unattractive to youths. This study examined the extent to which perceived social norms and psychological capital affect youths’ intentions to pursue agribusiness opportunities in the Eastern DRC. Data was...
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Citation: Feleke, S.; Cole, S.M.; Sekabira, H.; Djouaka, R.; Manyong, V. Circular Bioeconomy Research for Development in Sub-Saharan Africa: Innovations, Gaps, and Actions. Sustainability 2021, 13, 1926. https://doi.org/10.3390/su13041926
Article
Fertilizer use remains below recommended rates in most of Sub-Saharan Africa, contributing to low crop yields and poverty. We explore the role of fertilizer quality. We interviewed fertilizer sellers in an important agricultural region in Tanzania and sampled their fertilizer to establish that the nutrient content of fertilizers is good, meeting in...
Article
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The study examined the factors for the successful implementation of bylaws on sustainable crop intensification. The study used the new institutionalism theory to examine the implementation of bylaws in the potato cropping system in southwestern Uganda. A mixed model featuring both qualitative and quantitative approaches was used in the study. This...
Article
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In developing countries, agricultural cooperatives are increasingly being used to promote improved agricultural technologies and alleviate food insecurity and poverty. However, little is known about the role of agricultural cooperatives in accelerating the adoption of improved agricultural technologies. Using a comprehensive balanced household pane...
Article
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This paper examines the effect of foreign direct investment (FDI) on youth unemployment in the Southern African Development Community (SADC) region using panel data from the World Bank World Development Indicators for the period 1994–2017. Results from the Feasible Generalized Least Squares (FGLS-Parks) technique show that FDI has an insignificant...
Article
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In a country of about 200million people, the government has over the years constituted various initiatives to address the issue of unemployment, food security, and youth involvement in agriculture. However, the impact of these initiatives has been minimal due to the inconsistency in government policies, changes in government, inadequate implementat...
Article
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Involvement of youth in horticulture agribusiness has become a vital approach to create employment opportunities among the youth in Tanzania. This study aimed at examining the extent of youth participation and factors influencing youth involvement in horticulture agribusiness with a focus on innovations in post-harvest management (PHM). Data were c...
Article
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Technical approaches to food production are important to the food security of growing populations in developing countries. However, strategic investments in research and farm‐level adoption require greater coherence in agricultural, societal, and local policies. The Agricultural Innovation System (AIS) and formation of the Cassava Innovation Platfo...
Article
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This article evaluates the impact of cowpea market participation on household food security and income in northern Nigeria. Using household survey data from a representative sample of over 1,500 farm households and applying a combination of instrumental variable techniques and dose–response functions, we found that cowpea market participation had a...
Article
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This study evaluated the poverty reduction impact of the adoption of cropping system intensification (CSI) technologies using the endogenous switching regression (ESR) model in the Great Lakes region of Africa that comprises Burundi, eastern DR Congo, and Rwanda. The study data came from a household survey of 1,495 sample households interviewed bet...
Article
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Lack of good-quality planting materials has been identified as the most severe problem militating against increased agricultural productivity in sub-Saharan Africa (SSA) and beyond. However, investment of research efforts and resources in addressing this menace will only be feasible and worthwhile if attendant economic gains are considerable. As a...
Article
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An emerging orthodoxy supports the proposition that the rural economy – built around agriculture but encompassing much more – will serve as sweet spot of employment opportunities for many millions of young people into the foreseeable future. However, our understanding of how rural young people in Africa take advantage of processes of rural transfor...
Article
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Dietary aflatoxin exposure is a widespread problem in the developing world and causes severe negative health consequences to humans and livestock animals. A new biological control product, called Aflasafe, has been introduced in Nigeria to mitigate aflatoxin contamination of maize in the field and in storage. No known prior work has estimated how m...
Article
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Adoption of improved agricultural technologies has long been recognized as critical for reducing poverty through increased productivity, incomes, and asset accumulation. Using a nationally representative survey data from a sample of over 1500 households in Nigeria, this paper evaluates the impacts of adoption of improved cowpea varieties on income...
Article
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Previous studies on the adoption and impacts of improved crop varieties have relied on self-reported adoption status of the surveyed households. However, in the presence of weak variety maintenance and poorly functioning seed certification system, measurement errors in self-reported adoption status can be considerable. This paper investigates how s...
Article
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This study undertakes an ex‐ante evaluation of the effects of alternative technology and policy options on soybean supply and demand in sub‐Saharan Africa (SSA) to 2050. Current soybean consumption in SSA is dominated by cooking oil followed by soybean cake used as animal feed. Due to weak processing sectors and low soybean yields, the region is cu...
Article
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Engaging rural youth in agribusiness has become an important strategy to create employment opportunities in Africa. To this end, governments and development partners have implemented various interventions that facilitate youth engagement in agribusiness for several years. However, there is a dearth of evidence on what worked and what did not work w...
Article
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We use DNA‐fingerprinting to estimate the poverty reduction effect of adoption of improved cassava varieties in Nigeria. We estimate the counterfactual household income distribution of cassava producers by combining farm‐level treatment effects with a market‐level model. Our results suggest that adoption of improved cassava varieties has led to a 4...
Article
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Aflatoxin is a potent mycotoxin that can cause cancer and death and is associated with stunted growth. Prevalence of aflatoxin is widespread in Africa negatively impacting health and trade. Aflasafe is a biological control product that can be applied to maize or groundnut fields to reduce aflatoxin contamination. This study examines the levels of a...
Article
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Lambda-cyhalothrin (λ-cyhalothrin) is the most commonly used pyrethroid insecticide for vegetable farming in Benin. This insecticide is misused and overused by farmers, and hence may pose health hazards to consumers. We monitored λ-cyhalothrin residues in lettuce and cabbage from farms at the market gates in Cotonou and Parakou using high performan...
Article
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Agricultural policies in sub-Saharan Africa have paid insufficient attention to sustainable intensification. In Uganda, agricultural productivity has stagnated with aggregate increases in crop production being attributed to expansion of cultivated land area. To enhance sustainable crop intensification, the Ugandan Government collaborated with stake...
Article
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This study measured the impacts of drought tolerant maize varieties (DTMVs) on productivity, welfare, and risk exposure using household and plot-level data from rural Nigeria. The study employed an endogenous switching regression approach to control for both observed and unobserved sources of heterogeneity between adopters and non-adopters. Our res...
Poster
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The Federal Republic of Nigeria is committed to achieving the 2030 Agenda for Sustainable Development as well as and the measurement and monitoring of progress towards the goals and targets that Heads of State and Government collectively agreed at the Special Summit of the United Nations (UN) held in September 2015. Sustainable Development Goal (SD...
Article
In Nigeria, Aflasafe is a registered biological product for reducing aflatoxin infestation of crops from the field to storage, making the crops safer for consumption. The important questions are whether farmers will purchase and apply this product to reduce aflatoxin contamination of crops, and if so under what conditions. A study was carried out t...
Article
Sustainable agricultural intensification requires the use of multiple agricultural technologies in an integrated manner to enhance productivity while conserving the natural resource base. This study analyses the adoption and impacts of sustainable intensification practices (SIPs) using a dataset from Ghana. A multivariate probit (MVP) model was est...
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This paper examines the impacts of access to extension services and cooperative membership on technology adoption, asset ownership and poverty using household-level data from rural Nigeria. Using different matching techniques and endogenous switching regression approach, we find that both extension access and cooperative membership have a positive...
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Applying stochastic frontier Cobb–Douglas production function, the study assessed the efficiency of sweet potato ( Ipomoea batatas ) producers in the Southern region of Ethiopia. The study revealed the existence of fairly large technical inefficiency in sweet potato production. The technical efficiency ranged from 12.6 to 93.7%, with more than half...
Article
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In an attempt to go beyond the so called “smart” subsidies, Nigeria has embarked on a potentially innovative mobile phone-based input subsidy program that provides fertilizer and improved seed subsidies through electronic vouchers. In this article, we examined the productivity and welfare effects of the program using household-level data from rural...
Method
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Several alternative options have been used for varietal identification. However most of the traditional methods have inherent uncertainty levels and estimates often have wide confidence intervals. In an attempt to circumvent traditional survey-based measurement errors in varietal identification, DNA-based varietal identification has been implemente...