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Publications (97)
Maize constitutes one of the most important crops in Niger's fight for food security, and it is cultivated in all regions of the country. However, maize cultivation is declining due to low soil fertility. This study focused on evaluating the impact of fertilizers on maize plant production in Zinder. The fertilizer effect was evaluated based on 21 q...
Lettuce (Lactuca sativa L.) is cultivated as a cash crop by small-scale farmers in Niger. This study assessed eight lettuce morphotypes from the Zinder region in Niger Republic for their agronomic performance traits. The experiment followed a randomized complete block design with three replications. Significant differences were observed between the...
An experiment was conducted in the field to evaluate the effect of phosphorus fertilization in microdose using organic
and mineral fertilizers on the yield and profitability of cowpea cultivation. To achieve this, a balanced application of
NPK and granular compost was provided to supply the same amount of phosphorus to the cowpea. Three treatments...
In Niger, sorrel plays an important role in the food and nutritional security of populations. The objective of this study is to put value in the value chain of Guinea Sorrel. The choice of individuals to be surveyed was made randomly at different levels of the value chain. At the producer level, a sample of 26 individuals was retained, 20 individua...
La dégradation des écosystèmes dans les aires protégées de l’Afrique de l’Ouest est un phénomène réel et entrainant un déséquilibre écologique. Dans ce contexte, les aires protégées du Niger ne sont pas épargnées de cette dégradation, particulièrement la Réserve de Biosphère de Gadabédji. Cette dernière est sous la pression anthropique qui modifie...
La présente étude analyse la flore et la végétation en lien avec les variables environnementales de la zone centrale de l’habitat de la girafe. Les relevés floristiques ont été réalisés dans 60 placettes de 1000 m² et 94 de 2500 m² à l’aide de la méthode de Braun-Blanquet. Au total 103 espèces végétales ont été recensées. Ces espèces sont reparties...
The work for estimation of genetic characters would be useful in developing appropriate selection and strategies. Heritability is a measure of possible genetic improvement and advancement under selection. Aim of the study was to determine the level of agro-morphological diversity of Niger nutsedge ecotypes and to predict which parameters have good...
Background. Decentralized participatory breeding approach facilitate the development of varieties better suited for a diversity of farmers' contexts. To enhance breeding efficiency, formal methodological settings are needed to include, at early stage of selection, particular local practices and farmers' preferences. Objective. Evaluate how location...
Roselle (Hibiscus sabdariffa L) is a plant native to India and Malaysia, very widespread in West African countries. It is a shrub of the Plantae kingdom belonging to the Malvaceae family, of the Hibiscus genus and of the sabdariffa species. This study aims to provide additional information for a better valorization of sorrel cultivation in West Afr...
In Niger, cowpea is primarily cultivated under rainfed conditions and therefore often suffers from water stress at the end of its cycle. However, cultivating dual-purpose varieties during the cold dry season can help minimize the effects of water stress and improve cowpea production. A field study was conducted to assess the seasonal effect (cold d...
The use of neglected and underutilized species (NUS) in agrosystems is a potential solution to the challenges arising from global change. These species could contribute to the equitable diversification of agricultural systems. Providing knowledge on their genetic diversity and fostering access to data and results is essential for the development of...
Background and Objective: The genetic structuring of populations could be explained by several parameters such as geographical distance and anthropogenic activities. The Niger date palm population is genetically structured into biogeographical distribution of subpopulations; however, it is important to find out the main causes of this structuring....
Balanites aegyptiaca contributes strongly to the resilience of Sahelian populations. All the organs of B. aegyptiaca are used either for food, medicinal purposes or for other services. However, very few studies on the socioeconomic importance of B. aegyptiaca have been conducted in Niger. The main objective of this study was to valorize the knowled...
Family farms play an essential role in agroecological transition in Sahelian countries and worldwide. They present diversified features in terms of socio-economic organization, agrobiodiversity management and cropping systems diversity. Decentralized participatory breeding approaches aim to sustain the diversity of varieties adapted for such smallh...
Bambara groundnut is a neglected crop in the department of Kantché despite its many advantages. This study aims at assessing the genetic diversity of Bambara groundnut as perceived by the producers of the department of Kantché (Zinder) as well as the sociocultural considerations in the villages of Godo, Tassaou and Badahi. To achieve this objective...
L’ail (Allium sativum L.) est principalement cultivé en saison sèche sous irrigation au Niger. La commune rurale de Tabelot est la principale zone de production de l’ail au Niger. L’objectif de cette étude était décrire les caractéristiques de la production de l’ail et les critères de classifications utilisés par les producteurs pour identifier les...
The FAO recently estimated that demand for food will increase by 70% by 2050. The challenge will not only be on increasing the food supply but also on improving its nutritional value under an accelerating rate of environmental and social changes. One solution would be the wider use of underutilized crops to diversify alimentation and develop sustai...
Improving roselle yield and production, particularly in light of climate change and variability, remains challenging and constantly urges for the modification of agro-techniques. One such modification that has proven successful in boosting yield of many vegetable crops in recent years is the adaptation of the apex cutting technique, especially in u...
Climate change is affecting crop production in the West Africa Sahel. Farmers develop many adaptation strategies However, few of them have been tested to find their climate smartness, primarily their agronomic and economic benefits. Therefore, this study aimed to evaluate the field experiment in two successive years, 2020 and 2021, in rainy conditi...
Le présent travail a pour objectif d’analyser et de dégager l’apport de la radio communautaire “Damergou” dans la promotion et le développement d’une agriculture performante et durable dans un contexte de changement climatique. La méthodologie utilisée s’est appuyée sur la recherche documentaire, l’analyse de documents de la grille des programmes d...
The cultivation of date palm, a pillar of oasis agrosystem constitutes a real source of development in arid and semi-arid zones because of its fruit's rich in sugars and various products, essential to daily life of the populations. In Chad, date production has experienced a decline since the sixties, in relation to diseases, pests and poorly perfor...
The experiment was conducted at the Université de Zinder in Niger Republic, in a randomised complete block design during the dry season of 2019-2020. Data were
collected on bulb diameter, bulb length, bulb weight, number of cloves per bulb, clove diameter, clove length, clove weight, number of outer clove lets per clove, outer clove lets diameter,...
New information and earth observation technologies, remote sensing and the Geographic Information System (T-GIS), have become very effective tools in crop mapping for better management of agricultural plots. The objective of this study is to propose a combination of spectral indexes (SI) based on a time series of sentinel-2 images by comparing the...
Au Niger, le Gombo représente l’une des plus importantes cultures maraichères. L’objectif de cette étude était d’évaluer l’impact de cinq types de fertilisants sur la productivité de trois variétés du gombo de la région de Zinder. L’étude a été conduite pendant la campagne agricole 2020-2021 en deux essais repartis sur deux périodes : la première p...
Okra, (Abelmoschus esculentus (L.) Moench), is grown as a sole crop and asa field crop in Niger. In the present study, three okra varieties from Zinderregion in Niger Republic have been assessed for their agronomic perfor-mance traits. The experiment was conducted in a randomized completeblock design with three replications during the dry season 20...
L’oseille de Guinée (Hibiscus sabdariffa L.) est une culture importante en raison de ses feuilles, calices et graines qui jouent un rôle
socio-économique considérable pour les populations du sahel. L’objectif principal de ces expérimentations est d’évaluer l’effet de la
fertilisation minérale de NPK (15-15-15), afin de déterminer la dose optimale...
La présente étude a pour objectif d’évaluer l’efficacité et le rôle de la communication participative dans les champ école paysans (CEP) mis en œuvre par la Chambre Régionale d’Agriculture (CRA) de Diffa (Niger). La méthodologie utilisée s’est appuyée sur la recherche documentaire, l’observation directe, les enquêtes de terrain auprès des apprenant...
This study was initiated to characterize the economic profitability of the breeding of the local chicken "Kolonto" in the Gaya department. A survey was conducted in 15 localities in the 6 communes of the Gaya department. The results showed that 29% of "Kolonto" local chicken keepers are women. The price of local chicken "Kolonto" varies between 4 t...
Garlic belongs to the Allium genus, which includes more than 750 species divided into more than 60 taxonomic groups. It is cultivated in many countries throughout the world for the bulb and used as a spice and functional food. The plant vegetatively propagates. This review will focus on origins, biology, analysis of genetic diversity, pharmacologic...
The present study was initiated to determine the morphobiometric characteristics of local chicken population in Niger. A total of 554 chickens (156 males and 398 females) were sampled in the four (4) agro-ecological zones of the country. A complete description by direct observation, individual weighing and body measurements were performed on the en...
Fonio is an ancient orphan cereal, cultivated by resource-poor farmers in arid and semi-arid regions of West Africa, who conserved and used the cereal for nutrition and income generation. However, the extent and patterns of phenotypic variation within the fonio germplasm remain scarcely evaluated to inform breeding decisions. In this study, we used...
Phoeniciculture, or date palm cultivation plays a major socio-economic and ecological role. However, few studies have quantified the drivers of date palm cultivation and its socio-economic and environmental benefits in West African Sahel. Therefore, this study assessed the effect of anthropic and environmental factors on quantitative and qualitativ...
Several multivariate statistical methods are used in population genetics but there are very few studies that have revealed the strengths and weaknesses of different methods. Thus, this study aims to reveal the strengths and weaknesses of the different multivariate statistical methods used in population genetics through the world. This synthesis is...
The use of plants species for medicinal purpose is a current practice since some millennium. The goal of this study is to evaluate the antibacterial properties three plants (Combretum micranthum G. Don, Acacia nilotica (L.) Willd, ex Delile and Phyllanthus pentandrus Schumach & Thonn) on in vitro growth strains of Salmonella. Methods: The plants we...
Abstract
Soumbala, a condiment widely consumed in rural areas, remains poorly characterized in Niger. The purpose of this study is to determine the physico-chemical and microbiological characteristics of nerve and guinea sorrel soumbala samples produced in the community and in the laboratory. To do this, four samples of each of the two variants of...
Abstract
Soumbala, a condiment widely consumed in rural areas, remains
poorly characterized in Niger. The purpose of this study is to determine the physico-chemical and microbiological characteristics of nerve and guinea sorrel soumbala samples produced in the community and in the laboratory. To do this, four samples of each of the two variants of...
Objective: The aim of this study is to determine the prevalence and phenotype diversity of Salmonella isolated from poultry offal in Niger. Methodology and Results: A total of 155 poultries offal consisting of gizzard, liver and spleen were analyzed according to ISO 6579: 2002. Based on these different analyzes, high prevalence of Salmonella from 2...
Au Sahel, l’oseille est cultivée pour ses feuilles, ses graines et ses
calices qui constituent une source de revenu pour les producteurs. Les essais
ont été conduits dans les stations de recherche de l’Institut National de la
Recherche Agronomique (INRAN) de Tara/Gaya et Tarna/Maradi au Niger au
cours des saisons de pluies 2015 et 2016 pour étudie...
The morpho-biometric characterization of local chicken "Kolonto" ecotype was undertaken in the department of Gaya. The objective of this study is to promote the breeding of the "Kolonto" ecotype in Niger. A sample of 111 hens and 35 roosters was photographed, described and measured individually. This sample was collected in 15 localities distribute...
The morphological variability of 56 okra (Abelmoschus spp.)
Accessions was evaluated over two years (2008 and 2009). Ten (10) agromorphological characters were evaluated in the Sadoré station in Niger. The hierarchical ascendant classification (CAH) and the discriminant factor analysis (AFD) revealed four groups (GI, GII, GIII and GIV). The accessi...
La sécheresse est un facteur abiotique qui intervient en début, en plein ou en fin de saison. Elle est fréquente dans les zones sahéliennes en affectant le rendement des cultures. Cette étude a pour objectif d'évaluer les variétés d'arachide vis à vis de ce facteur afin d'identifier des variétés tolérantes à cette sécheresse. Vingt variétés d'arach...
Ce support est un poster sur le thème ma thèse que je devrais présenter lors de la Semaine Africain de la Science; mais qui n'a pas été présené.
This study investigated the transpiration (TR) response to (i) diurnal changes of vapor pressure deficit (VPD) and (ii) soil dry down in four maize hybrids contrasting for yield performance under drought stress in the field. These four hybrids included a popular local variety P3K and a commercial check SC303 that were found to be drought susceptibl...
Fonio [Digitaria exilis (Kippist.) Stapf.] is a cereal which is experiencing a renewed interest worldwide due to its organoleptic, nutritional and dietary qualities. Investigations on farm and sample collections were conducted in order to study the different types of fonio by famers’ perception and its position relative to other crops in agricultur...
The breeding of local chicken is an important source of animal protein and income for the rural populations of Niger, and the improvement of its productivity requires a better knowledge of production practices. Hence, a socio-economic and technical survey was undertaken from July to August 2017 in order to provide necessary information on the pract...
Le Niger se trouve dans une dynamique d’augmentation des productions et, du fait de la saturation foncière, ceci doit se faire par l’augmentation des rendements des cultures et non par l’augmentation des superficies cultivables. Il existe deux principales voies pour augmenter les rendements qui sont la sélection des variétés et l’amélioration des s...
Maize (Zea mays L.) plays an important role in food security in West Africa. However, its cultivation is declining, thus, threatening food security and leading to loss of genetic resources of maize. The objective of this study was to evaluate the agro-morphological performance of local and improved maize varieties in South-Western Niger. A total of...
The Region of Diffa is located in the Sahelian zone, in the basin of Lake Chad. Geology is characterized by ergs smoothed out by Tenerean lake transgressions. This set is punctuated with date palm trees. And the vegetation of the surrounding dune areas is a steppe at Acacia tortilis, Balanites aegyptiaca, Leptadenia pyrotechnica, Aristida mutabilis...
In sub-Saharan Africa, Salmonella cause of acute gastroenteritis and invasive disease. The aim of this study was to assessthe diversity the distribution and antibiogram profile of Salmonella isolates in two cities of Niger. Salmonella strains isolated from patients duringthe period 2015-2016 were biotyped using Api20E and serotyped withspecific ant...
Selection of drought tolerant and high nitrogen fixing varieties of groundnut and cowpea could improve their productivity and that of the cereals grown in association or rotation. Groundnut and cowpea varieties were assessed in field and in pots for response to drought using 4 fertilizer treatments. For cowpea, drought conditions decreased most of...
Diversity and dynamics of Salmonella isolated from lettuce (Lactuca sativa L.) vegetable crops in Niger. Objective: In Niger, vegetable farming in urban areas uses wastewater heavily soiled by human and animal fecal matter for irrigation. In this study the prevalence and diversity of Salmonella isolated from lettuce at different Niger sites was eva...
Résumé
Les échanges internationaux, les nouvelles pratiques agricoles, de
production animale et d’alimentation, ont facilité la propagation et la
transmission d’agents pathogènes d’origine alimentaire ; notamment
Salmonella. Salmonella est une bactérie ubiquiste responsable de pathologies
diverses chez l’homme, les animaux. Elle présente une forte...
Objective: In Niger, cowpea plays an important socio-economic role because of its richness in protein
and the income it generates to producers. This work aims to study the effect of stress of water deficit at
the vegetative stage of five cowpea varieties.
Methodology and results: Experimentation was carried out in 16-liter pots that are holed at th...
This study aims to assess population structure and ecological indicators of woodland vegetation dominated by Pterocarpus erinaceus and Anogeissus leiocarpa as a basis for sustainable management and conservation strategies. We sampled 34 plots each measuring 30 m × 30 m in W National Park in Niger and analyzed structural parameters (tree density, ba...
In a context of the global major changes, it is mandatory to enlarge the range of crops supporting food security and pay great attention to neglected and underutilized species. However, basic knowledge of the biology of many neglected and underutilized species is still lacking to increase their yields. In this study, the mating system of white foni...
Date palm (Phoenix dactylifera L.) is mainly cultivated for its edible fruit and is of great socio-economic importance for the populations of arid zones. Analysis of the date palm genetic diversity in the Old World had revealed a strong genetic structure with the existence of two gene pools, one Eastern comprising Asia and Djibouti, and one Western...
Phenotypic changes in plants can be observed along many environmental gradients and are determined by both environmental and genetic factors. The identification of alleles associated with phenotypic variations is a rapidly developing area of research. We studied the genetic basis of phenotypic variations in 11 populations of wild pearl millet (Penn...
