Hippolyte Affognon

Hippolyte Affognon
Consultative Group on International Agricultural Research | CGIAR · International Crops Research Institute for the Semi Arid Tropics (ICRISAT)

PhD

About

118
Publications
95,862
Reads
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2,361
Citations
Additional affiliations
November 2010 - October 2015
icipe – International Centre of Insect Physiology and Ecology
Position
  • Head of Department
Description
  • Social science Impact Assessment Postharvest

Publications

Publications (118)
Article
Full-text available
This paper investigates the welfare impacts of improved groundnut adoption in Ghana, Mali, and Nigeria using three-year balanced panel data collected from 2,868 households. We apply the Cragg double hurdle model to understand the adoption process and a fixed-effects instrumental variable approach to estimate the impact on gross margins, household i...
Chapter
This chapter reviews the available literature on economic evaluations of biological control. Although most studies have focused on the use of arthropods to control invasive alien insect pests or weeds, there has been some analysis of the use of pathogens to control vertebrates. The different methods or approaches used in assessing the economic impa...
Article
Full-text available
The black soldier fly (Hermetia illucens L.) is a potential substitute of fish meal in feeds. However, information on the nutrition and safety of these feeds is inadequate. This study examined the quality of fish feed pellets extruded from blends formulated with and without black soldier fly larval meal (BSFLM). A further aim was to study the influ...
Article
Full-text available
Rift Valley Fever (RVF) is a zoonotic disease whose outbreak results in heavy economic and public health burdens. In East Africa, RVF is mainly experienced in arid and semi-arid areas predominantly inhabited by the pastoralists. These areas experience sudden, dramatic epidemics of the disease at intervals of approximately 10 years, associated with...
Article
Full-text available
Background Malaria prevention in Africa is mainly through the use of long-lasting insecticide treated nets (LLINs). The objective of the study was to assess the effect of supplementing LLINs with either larviciding with Bacillus thuringiensis israelensis (Bti) or community education and mobilization (CEM), or with both interventions in the context...
Article
Full-text available
Poverty among smallholder farmers in sub-Saharan Africa has been associated with low agricultural productivity emanating from gender yield gaps among other factors. Using data collected from smallholder groundnut producers in Nigeria, we analyzed the gender yield gap by applying the exogenous switching regression (ESR) model and Oaxaca-Blinder (OB)...
Article
Full-text available
Edible insects are increasingly being considered as food and feed ingredients because of their rich nutrient content. Already, edible insect farming has taken-off in Africa, but quality and safety concerns call for simple, actionable hazard control mechanisms. We examined the effects of traditional processing techniques—boiling, toasting, solar-dry...
Article
Edible insects are receiving attention as a protein source in the food and feed sector. However, successful commercialisation requires mass production matched with appropriate processing and storage techniques. The quality of dried and pulverised black soldier fly larvae stored in woven polypropylene (PP) sacks, polyethylene (PE) bags and plastic c...
Article
Local knowledge, attitudes, and practices (KAP) regarding African Indigenous Vegetables (AIVs) among local growers are required to design effective vegetable productivity-enhancing interventions. However, limited studies have been conducted in Kenya to assess the knowledge, attitudes, and practices on production performance of AIVs. A survey was co...
Article
Full-text available
Agricultural technologies and innovations play a great role in increasing productivity, alleviating and reducing poverty and contributing to economic development and this is made possible through adoption of improved technologies and innovations. This study centered on analysis of adoption of improved groundnut varieties in the Tropical Legume (TL...
Article
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Hermetic technologies are being promoted in Africa as safer and more effective methods of grain storage on smallholder farms. However, farmers and policy makers lack knowledge of their efficacy in controlling major stored grain pests. An on-station study was conducted to evaluate the triple layer Purdue Improved Crop Storage (PICS) airtight bags ag...
Article
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Grain production is an important component of food security in Kenya but due to environmental conditions that favor rapid growth of insect populations, farmers and other agricultural stakeholders face ongoing and novel challenges from crop and stored product pest insects. To assist development of methods to reduce economic losses from stored produc...
Conference Paper
Full-text available
During the last decades, gender-sensitive projects were designed and implemented with the goal of reducing gender gap and improving smallholder farmers’ livelihood. An extensive literature has provided gender-differentiated evidence of technology adoption, inputs use, and productivity in agriculture. However, little is known about the intra-househo...
Article
Full-text available
A composite blend consisting of sunflower cake, maize germ, wheat bran, fresh water shrimps and cassava flour was extruded using a single‐screw extruder to produce expanded fish feed pellets. The effects of temperature (80–120 °C), die diameter (2–4 mm), and feed pre‐conditioning time (50–150 s; steam 400 kPa) on properties of the pellets (expansio...
Article
Full-text available
The International Centre of Insect Physiology and Ecology (icipe) has recently developed and disseminated an integrated pest management (IPM) strategy for suppression of mango fruit flies among mango growing communities in Africa. While the economic benefits of the strategy in mango production has been established, the cross-commodity benefits have...
Article
Full-text available
Rodents are one of the major storage pests in on-farm maize storage in the tropics. However, information on actual magnitude of weight and quality losses caused by rodents in maize stores and species of rodent associated with the losses is scarce and if available would help to improve maize postharvest management. Maize stores of small-scale farmer...
Article
Major protein sources for feed manufacture have become costly, and this has led to increased cost of products such as aquafeeds. This has dampening effect on fish production especially in developing countries, and has necessitated a search for alternative protein sources in processed feeds. The effects of extrusion on aquafeed blends containing fra...
Article
Full-text available
Climate-smart agriculture (CSA) is increasingly seen as a promising approach to feed the growing world population under climate change. The review explored how institutional perspectives are reflected in the CSA literature. In total, 137 publications were analyzed using institutional analysis framework, of which 55.5% make specific reference to ins...
Data
Full-text available
Figure S1. Subject areas covered by the CSA agricultural oriented publications analyzed title; Figure S2. Geographic distribution of the CSA related publications; Table S1. Description of search strings used for CSA literature identification; Table S2. Categorization of CSA publications according to institutional dimensions.
Article
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Animal food sources provide human beings with minerals considerably in adequate quantities. Fish is an indispensable reliable source of nutrients, as aquaculture is a sector that is fast growing and which provides 50% of the world’s fish production. However, fish production is hampered by the increasing costs of feeds due to the ever rising cost of...
Article
Fish farming is faced with the challenge of high cost of feeds because of the cost of high quality protein needed for formulation of the feeds. Thus, there is urgent need for alternative protein sources. The effects of substituting freshwater shrimp meal (FWSM) with black soldier fly larvae meal (BSFM) or adult cricket meal (ACM) on physico-chemica...
Article
Edible insects are part of the diets of a significant proportion of rural populations in the tropics especially Africa and Asia, and their use as source of key nutrients for better nutrition is re-emerging. Indigenously, elemental methods are used to process the insects before they are consumed or sold in retail outlets. In recent years, better kno...
Article
Full-text available
p>Climate-smart agriculture (CSA) is increasingly seen as a promising approach to feed the growing world population under climate change. The review explored how institutional perspectives are reflected in the CSA literature. In total, 137 publications were analyzed using institutional analysis framework, of which 55.5% make specific reference to i...
Conference Paper
In response to the severe stemborers invasion in cereal farming regions of Kenya, a biological control (BC) program was initiated by icipe scientists. This program has released four natural enemies: Cotesia flavipes, Cotesia sesamiae, Telenomus isis and Xanthopimpla stemmator to suppress economically important stemborer pests; Busseola fusca, Chilo...
Article
Off-farm grain storage is an important postharvest undertaking by government, traders and processors in Kenya. A survey was conducted in 2014/2015 to assess the kinds and magnitudes of perceived losses experienced in off-farm stores, and the factors associated with them. Store supervisors or key personnel charged with grain storage in 39 public and...
Article
Full-text available
In many African cultures, insects are part of the diet of humans and domesticated animals. Compared to conventional food and feed sources, insects have been associated with a low ecological foot print because fewer natural resources are required for their production. To this end, the Food and Agriculture Organization of the United Nations recognize...
Article
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A wide range of insects affect crop production and cause considerable yield losses. Difficulties reside on the development and adaptation of adequate strategies to predict insect pests for their timely management to ensure enhanced agricultural production. Several conceptual modelling frameworks have been proposed, and the choice of an approach dep...
Article
Full-text available
Acanthoscelides obtectus (Say) (Coleoptera: Chrysomelidae) is an economically important pest of common bean, Phaseolus vulgaris L. (Fabaceae), in the tropics and subtropics. The larvae are cryptic and spend most of their development time inside the bean seeds. Their presence is almost imperceptible except for circular emergence holes created by the...
Poster
Full-text available
Hermetic storage for controlling postharvest losses and aflatoxin contamination on maize in Kenya
Article
Thrips, Frankliniella occidentalis (Pergande), is a major invasive pest that causes extensive yield losses in French bean and tomato in Kenya. Thrips management is based on the application of pesticides. In addition to increased environmental risks associated with pesticides, frequent use of these chemicals increases production costs and pesticide...
Article
Full-text available
Rift Valley fever (RVF) is an emerging mosquito-borne viral hemorrhagic fever in Africa and the Arabian Peninsula, affecting humans and livestock. For spread of infectious diseases, including RVF, knowledge, attitude and practices play an important role, and the understanding of the influence of behavior is crucial to improve prevention and control...
Data
Knowledge, Attitude and Practices Questions. (DOCX)
Data
Dataset of items included in reports of cross-sectional studies. (XLSX)
Article
Full-text available
Background: Rift Valley fever (RVF) is a mosquito-borne viral zoonosis of ruminants and humans that causes outbreaks in Africa and the Arabian Peninsula with significant public health and economic consequences. Humans become infected through mosquito bites and contact with infected livestock. The virus is maintained between outbreaks through verti...
Data
Sequences of primers used for virus characterization. (DOCX)
Article
Full-text available
Rift Valley fever (RVF) is a viral mosquito-borne disease with the potential for global expansion, causes hemorrhagic fever, and has a high case fatality rate in young animals and in humans. Using a cross-sectional community-based study design, we investigated the knowledge, attitudes and practices of people living in small village in Sudan with re...
Chapter
Mango growers in Africa are faced with the severe challenge of controlling pests, with the oriental fruit fly, Bactrocera dorsalis being the most destructive. Conventional fruit fly control in this region mainly involves the use of synthetic pesticides. Pesticides are expensive and have undesirable effects on human health, biodiversity and the envi...
Article
Full-text available
Rodents are one of the major postharvest pests that affect food security by impacting on both food availability and safety. However, knowledge of the impact of rodents in on-farm maize storage systems in Kenya is limited. A survey was conducted in 2014 to assess magnitudes of postharvest losses in on-farm maize storage systems in Kenya, and the con...
Conference Paper
This study examines factors influencing the intensity of market participation among smallholder male and female mango producers in Kenya in the context of integrated pest management (IPM) technology awareness for suppression of mango fruit flies. Specifically, we assess the impact of IPM awareness on proportion of mango sold out of total production...
Article
Abstract Grain legumes play an important role in community livelihood and in the national economy in Kenya. Unfortunately, in many African countries, production doesn't satisfy the demand in grains due to various constrains. Understanding farmers practices and behavior in the management of grain legume pests is a crucial step in the development of...
Article
The International Centre of Insect Physiology and Ecology (icipe), undertook a biological control (BC) programme for control of stemborers from 1993 to 2008, to reduce cereal yield losses due to stemborer attack in East and Southern Africa. The programme released four biological control agents—the larval parasitoids Cotesia flavipes and Cotesia ses...
Article
Edible insects are a natural renewable food resource and, within the context of food security could be one solution for Africa. Although, entomophagy is still being practiced in Africa, there is a degree of rejection in certain milieu due to negative images associated with insects and poor awareness efforts. In order to understand the key elementst...
Article
Entomophagy is an ancient practice viewed as a potential solution to food security and sustainable ecosystemmanagement in Africa. However, its expansion is challenged by several factors including acculturation, urbanisationand lack of information. Knowledge on indigenous practices can contribute to refining ongoing research activities and stimulate...
Article
Full-text available
Abstract Background: Mosquito lifespan can influence the circulation of disease causing pathogens because it affects the time available for infection and transmission. The life-cycle of mosquitoes is determined by intrinsic and environmental factors, which can include the availability of hosts and suitable resting environments that shelter mosquit...
Article
Full-text available
Abstract Climate change is expected to have serious economic and social impacts in East Africa, particularly on rural farmers whose livelihoods largely depend on rain-fed agriculture, hence adaptation is required to offset projected drawbacks of climate change on crop productivity. This paper examines farmers' perceptions and understanding of clima...
Article
Beekeeping generates both socioeconomic and environmental benefits. It is crucial for agricultural well-being owing to the natural biological interdependence that comes from insects and is a useful means of strengthening livelihoods because it uses and creates a range of assets. Beekeeping has been promoted among marginalized rural farmers in Kenya...
Article
Full-text available
Participatory on-farm trials were conducted to assess effectiveness of Purdue Improved Crop Storage (PICS™) bags for storage of maize in small-scale farmers’ stores in rural villages in eastern Kenya. A PICS bag is a three-layered hermetic bag-system that forms a barrier against the influx of oxygen and the escape of carbon dioxide. Jute, woven pol...
Conference Paper
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The current emphasis by the government of Nigeria on boosting . agricultural productivity requires actors of the agricultural sector to develop sustainable agro-allied technologies that could enhance the quality of crop-livestock products. Aflatoxin is reported to be a major challenge of many legume and cereal value chains with potentially negative...
Article
Full-text available
We utilized two waves of data collected from a sample of mango farmers in Meru County in Kenya to evaluate the impact of Integrated Pest Management (IPM) strategy for controlling fruit flies in mango-production. We specifically explored the effect of five IPM practices including parasitoids (p) and Metarhizium anisopliae-based biopesticides (biop),...
Article
Full-text available
Objective: Rift Valley fever (RVF) is a mosquito-borne infection with great impact on animal and human health. The objectives of this study were to identify ecological factors that explain the risk of RVF outbreaks in eastern and central Kenya and to produce a spatially explicit risk map. Methods: The sensitivity of seven selected ecological var...
Article
Full-text available
Background: Malaria remains a major health and development challenge in the sub-Saharan African economies including Kenya, yet it can be prevented. Technologies to prevent malaria are available but are not universally adopted by male- and female-headed households. The study thus, examined the role of gender in malaria prevention, examining adoption...
Article
Full-text available
This paper evaluated the economic benefits of managing mango-infesting fruit flies in Embu County, Kenya using an integrated pest management (IPM) package composed of male annihilation technique (MAT), protein bait spray, releases of exotic parasitoid Fopius arisanus and the use of augmentorium. The difference-in-difference (DiD) method was used to...