Journal articles on the topic 'Médias – Influence – Côte d'Ivoire'
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1
Yede N'Guessan, Félicien. "Les médias en Côte d'Ivoire : la presse écrite et audiovisuelle." Netcom 4, no. 2 (1990): 299–328. http://dx.doi.org/10.3406/netco.1990.1059.
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Celestin, N'GORAN Koffi. "Financial Credit in Agricultural Development in Côte D'ivoire." Journal of Agricultural Studies 9, no. 3 (September 3, 2021): 363. http://dx.doi.org/10.5296/jas.v9i3.18984.
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Agriculture has long been Côte d’Ivoire’s main source of export income and the first largest sector providing employment. For several decades, Ivorian agriculture remained unmodernized. The modernization of agriculture requires both public and private funding. Despite some efforts, financing of agriculture is not effective in Côte d'Ivoire due to the lack of real commitment from the private sector and commercial banks. The results showed that in the long-term agricultural credit and other variables have a positive and significant influence on agricultural added value. It is therefore recommended to increase agricultural credit and extend it to small producers.
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Moyal, Pascal. "Maize cob-borer abundance and influence on yield in Côte d'Ivoire." International Journal of Tropical Insect Science 15, no. 4-5 (October 1994): 469–78. http://dx.doi.org/10.1017/s1742758400015836.
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Hoddinott, John, and Lawrence Haddad. "DOES FEMALE INCOME SHARE INFLUENCE HOUSEHOLD EXPENDITURES? EVIDENCE FROM CÔTE D'IVOIRE." Oxford Bulletin of Economics and Statistics 57, no. 1 (February 1995): 77–96. http://dx.doi.org/10.1111/j.1468-0084.1995.tb00028.x.
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Philomène, Koffi Affoué. "Personnel Éducatif Du Secteur Public Et Activités Lucratives Parallèles En Côte d’Ivoire." European Scientific Journal, ESJ 13, no. 19 (July 31, 2017): 52. http://dx.doi.org/10.19044/esj.2017.v13n19p52.
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The quality of education is based on the content of the lessons which depends on the interest of educators in their profession through their availability for work and learners. In Côte d'Ivoire, this availability is not always effective, since many educational staff in public secondary schools carry out lucrative activities in parallel with their professional activities. This article "public sector educators and parallel lucrative activities in Côte d'Ivoire", which aims to explain how these activities influence the quality of education, is based on a survey based on qualitative methods And in quantitative terms in ten (10) secondary public schools in Abidjan. The survey involved interviewing 274 educators with teachers, management, management and union leaders through accidental sampling for the quantitative method and saturation sampling for the qualitative method. Interviews were conducted using semi-structured interview guides, while questionnaires were administered on the basis of standardized questionnaires on quantitative techniques. The results of the survey show that the lucrative activities of educational staff influence their attendance and contribute to the non-completion of school programs. These activities, which are also a source of exhaustion, undermine the efficiency of the educational staff of public secondary schools. The fatigue resulting from these activities does not always favor a better performance of the educational staff in the school while they negatively influence the integration of the values in the learners. In this way, the lucrative activities of educational staff contribute to the poor quality of education in Côte d'Ivoire. They should therefore be reorganized in order to achieve a quality education system as sought by the Ivorian educational community.
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Hidayat, Regga Fajar, Feni Fitriani Putri Rozi, Siti Aminah Chaniago, and Bagaskara Sagita Wijaya. "The Role of Multi National Cooperation (MNC) in Developing Countries Case Study : “Ferrero Group's Influence on Enhancement Cocoa Farms in Côte d'Ivoire”." Dauliyah: Journal of Islam and International Affairs 8, no. 2 (August 29, 2023): 164–72. http://dx.doi.org/10.21111/dauliyah.v8i2.10526.
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This article will discuss Ferrero Group's influence on the enhancement of agricultural cocoa in Côte d'Ivoire. Using the objective qualitative method to know how far that influence has been awarded the Ferrero Group to the Côte d'Ivoire country in agriculture cocoa. Côte d'Ivoire is a developing country that can say it still lacks knowledge in agriculture even though 40% of world cocoa comes from Côte d'Ivoire. Respond matter this is the Ferrero Group initiative to empower farmers' existing chocolate with three main pillars, namely: 1). Increase the level of life for farmers and communities 2). Protect the right of children 3). Protect natural capital. Through the Cocoa Horizons program, Ferrero Farming Values return the right child, agroforestry, and against deforestation. Through its programs, the Ferrero Group is capable of pushing agriculture Côte d'Ivoire cocoa by providing knowledge transfer and technology transfer to optimize agriculture cocoa. Ferrero also delivers education for the public will haka children for learning and play through the Ferrero Hazelnut Company Child Labor Monitoring & Remediation System. As well as building sustainable agriculture without damage natural through agroforestry and against deforestation. Keywords: Cocoa Agroforestry, Cocoa Horizons, Deforestation, Ferrero Farming Values.
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Boris, N’Gran Kuassi, Dr Hamidou Kone, and Ondoua Owoutou. "Influence des Facteurs Indiciduels et Contextuels Sur la Rehydratation par Voie Orale des Enfants Diarrheiques de Moins de Cinq ans en Côte d’Ivoire." European Scientific Journal, ESJ 19, no. 6 (February 28, 2023): 423. http://dx.doi.org/10.19044/esj.2023.v19n6p423.
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La diarrhée, avec un taux d’incidence de 88,86‰ en 2016, est la troisième cause de la morbidité chez les enfants de moins de 5 ans en Côte d’Ivoire (INS & ICF, 2012). Pour faire face aux maladies diarrhéiques, l’OMS et l’UNICEF recommandent comme mesures curatives la thérapie de réhydratation par voie orale (TRO) composée de la SRO et de la SMR. En dépit du programme de lutte contre les maladies diarrhéiques par la promotion de la thérapie notamment la réhydratation par voie orale, initié depuis 1985 en Côte d’Ivoire, le pourcentage des enfants diarrhéiques ayant reçu une réhydratation par voie orale en 2016 n’était de 56,4%. Il ressort de l’analyse multivariée explicative que la contribution du contexte communautaire dans l’explication de la réhydratation par voie orale des enfants diarrhéiques de moins de 5 ans est estimée à plus 42 %. Les facteurs contextuels associés à la TRO sont : la région de résidence et le milieu de résidence. Quant aux facteurs individuels associés, ce sont : le sexe de l’enfant et le niveau d’instruction de la mère. Ainsi, nous recommandons à l’Etat de Côte d’Ivoire, à travers le Ministère de la santé et de l’hygiène publique d’intensifier les compagnes de lutte contre les maladies diarrhéiques chez l’enfant de moins de cinq ans par la promotion de la thérapie de réhydratation orale (SRO et LMR) auprès de la population du milieu rural surtout dans la région du Nord.
Diarrhea, with an incidence rate of 88.86‰ in 2016, is the third leading cause of morbidity in children under 5 years of age in Côte d'Ivoire (INS & ICF, 2012). To address diarrheal diseases, WHO and UNICEF recommend oral rehydration therapy (ORT) composed of ORS and SMR as curative measures. Despite the program to control diarrheal diseases through the promotion of oral rehydration therapy, initiated since 1985 in Côte d'Ivoire, the percentage of diarrheic children who received oral rehydration therapy in 2016 was only 56.4%. The explanatory multivariate analysis shows that the contribution of the community context in explaining oral rehydration of diarrheic children under 5 years of age is estimated at more than 42%. The contextual factors associated with ORT are: region of residence and environment of residence. The individual factors associated with ORT are: the child's sex and the mother's level of education. Thus, we recommend that the State of Côte d'Ivoire, through the Ministry of Health and Public Hygiene, intensify the campaigns against diarrheal diseases in children under five years of age by promoting oral rehydration therapy (ORT and MRL) among the rural population, especially in the northern region.
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Berte, Kama, and Francis M. Epplin. "Evaluation of the Influence of Agricultural Price Policy on Cotton Production in Côte‐d'Ivoire." Agricultural Economics 3, no. 1 (March 1989): 69–76. http://dx.doi.org/10.1111/j.1574-0862.1989.tb00071.x.
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Berte, K. "Evaluation of the influence of agricultural price policy on cotton production in Côte-d'Ivoire." Agricultural Economics 3, no. 1 (March 1989): 69–76. http://dx.doi.org/10.1016/0169-5150(89)90039-x.
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Borchers, Claudia, and Christoph Randler. "Sleep-Wake Cycle of Adolescents in Côte d'Ivoire: Influence of Age, Gender, Religion and Occupation." Chronobiology International 29, no. 10 (November 29, 2012): 1366–75. http://dx.doi.org/10.3109/07420528.2012.741173.
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Moyal, Pascal. "Stemborer larval growth and tunnelling and its influence on maize vegetative growth in Côte d'Ivoire." International Journal of Tropical Insect Science 16, no. 3-4 (December 1995): 293–301. http://dx.doi.org/10.1017/s1742758400017318.
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Borchers, Claudia, Dabila Ouattara, Christian Vollmer, and Christoph Randler. "Sleep duration and chronotype in adults in Côte d'Ivoire: influence of gender, religion and age." Journal of Psychology in Africa 25, no. 4 (July 4, 2015): 350–55. http://dx.doi.org/10.1080/14330237.2015.1078093.
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Assanvo, Amoa N’guessan Stevenson, and Kouakou Jérôme Kouadio. "Cassava Consumption and Biological Adaptation to Plasmodium Falciparum Malaria in Man, Côte d'Ivoire." European Journal of Theoretical and Applied Sciences 1, no. 5 (September 1, 2023): 1313–20. http://dx.doi.org/10.59324/ejtas.2023.1(5).111.
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The biological adaptation of the human organism to Plasmodium falciparum malaria infection could be attributable to its endogenous biological potential and to the action of bio-environmental elements. The influence of exogenous biochemical activators, in particular the intake of micronutrients with immune potential, on the protection of the human body from malaria infection is far from being sufficiently studied. The present study examines the effect of varying cassava consumption frequency on biological adaptation to Plasmodium falciparum malaria infection. The study involved 83 women and 80 men, aged between 5 and 70 years, living in Man (Côte d’Ivoire) and admitted for consultations at the regional hospital. The frequency of manioc ingestion was assessed using a 14-item food frequency questionnaire administered face-to-face. Biological adaptation was measured using blood smear and thick blood smear results. The results of Fisher's test show that populations with a high frequency of cassava consumption have a lower proportion of Plasmodium falciparum malaria infections than their counterparts with a low frequency of cassava consumption. Cassava consumption therefore improves the individual's biological adaptation, i.e. the protective protein-immune system, to Plasmodium falciparum malaria infection.
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Méité, N'dogomo, Clotaire D. Nanho, Mahawa Sangaré, Boidy Kouakou, Ismael Kamara, Alexis D. Silué, Saint-cyr Packo, et al. "Evolutionary profile of patients with hemoglobin SC disease regularly followed in Côte d'Ivoire." International Journal of Research in Medical Sciences 7, no. 1 (December 26, 2018): 25. http://dx.doi.org/10.18203/2320-6012.ijrms20185357.
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Background: West Africa is recognized as the elective focus of hemoglobin C. The S and C combination in the same patient gives a major sickle cell syndrome. In our country, very few series dealing with the evolutionary features of this SC form have been published contrary to the homozygous SS form. The aim of this study was to describe the evolutionary profile of double heterozygous SC sickle cell patients.Methods: This was a retrospective and prospective study with descriptive and analytical purpose of 174 SC sickle cell patients.Results: The median age was 26 years with extremes of 6 years and 57 years. 96% of patients had less than 4 vaso-occlusive seizures per year. The evolutionary complications were mainly ischemic (56.30%) and infectious (39.10%). Among ischemic complications, sickle cell retinopathies and aseptic osteonecrosis are the most common with 59.20% and 31.63% respectively. Infectious complications were dominated by ENT (36.76%) and osteoarticular (35.29%) infections. Only age had an influence on the occurrence of ischemic complications (p = 0.0001). The probability of survival at 5 years was 99.38% and that at 20 years was 91.57%. The overall survival was not influenced by evolutionary complications.Conclusions: Infectious and ischemic evolutionary complications show the importance of vaccination and an early screening program.
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Daniel Gniza, Innocent. "PREFERENCE FOR CREDIT SOURCES IN RURAL AREAS: THE CASE OF SMALL RICE PRODUCERS IN CÔTE D'IVOIRE." FOOD & AGRIBUSINESS MANAGEMENT 4, no. 1 (2023): 31–37. http://dx.doi.org/10.26480/fabm.01.2023.31.37.
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This study’s goal is to investigate the socioeconomic variables that influence small-scale rice growers in Côte d’Ivoire’s need for financing from various sources. The study assessed producers’ choice of various credit sources, including banks, credit unions, people, and input suppliers, using a multivariate Probit model applied to data collected from a sample of 1429 producers acquired through multilevel stratified sampling in the departments of Korhogo, Ferké and Man in Côte d’Ivoire. The findings indicate that the choice of credit source is influenced by age, gender, the number of children in the household, the cultivation of cash crops, the value of farm equipment, off-farm activities, household income, contact with extension agent, the distance from town, the main activity, group membership, the level of technology applied to the plot, the ownership of livestock, the degree of self-consumption, the number of assets owned, and geographical location. These sources are substitutable from the producers’ perspective. Policy makers should take into account the characteristics of the available and appropriate credit sources in order to develop a credit market suitable for all smallholder farmers.
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Kouakou, N'Goran David Vincent, Niko Speybroeck, Nogbou Emmanuel Assidjo, Jean-François Grongnet, and Eric Thys. "Typifying Guinea Pig (Cavia Porcellus) Farmers in Urban and Peri-Urban Areas in Central and Southern Côte d'lvoire." Outlook on Agriculture 40, no. 4 (December 2011): 323–28. http://dx.doi.org/10.5367/oa.2011.0066.
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Guinea pig production is practised by all strata of society in Côte d'Ivoire, without regard to gender, age, religion, instruction level or community. It is essentially a source of income, but socioeconomic and cultural background significantly influence the approach to guinea pig production. Adult owners use animals as a source of income. Children eat a significant part of the production themselves. Adolescents progress from consumption to marketing. This preliminary study opens the way for future work that could measure changes over time in the socioeconomic profile of guinea pig farmers and the attitude of the population towards guinea pig breeding.
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Fürst, Thomas, Kigbafori D. Silué, Mamadou Ouattara, Dje N. N'Goran, Lukas G. Adiossan, Yao N'Guessan, Fabian Zouzou, Siaka Koné, Eliézer K. N'Goran, and Jürg Utzinger. "Schistosomiasis, Soil-Transmitted Helminthiasis, and Sociodemographic Factors Influence Quality of Life of Adults in Côte d'Ivoire." PLoS Neglected Tropical Diseases 6, no. 10 (October 4, 2012): e1855. http://dx.doi.org/10.1371/journal.pntd.0001855.
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Coulibaly, Wahauwouélé Hermann, Koffi Maïzan Jean-Paul Bouatenin, Zamblé Bi Irié Abel Boli, Kouamé Kohi Alfred, Youan Charles Tra Bi, Koky Marc Celaire N'sa, Marlène Cot, Clement Djameh, and Koffi Marcellin Djè. "Influence of yeasts on bioactive compounds content of traditional sorghum beer (tchapalo) produced in Côte d'Ivoire." Current Research in Food Science 3 (November 2020): 195–200. http://dx.doi.org/10.1016/j.crfs.2020.06.001.
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Banniza, S., A. A. Sy, P. D. Bridge, S. A. Simons, and M. Holderness. "Characterization of Populations of Rhizoctonia solani in Paddy Rice Fields in Côte d'Ivoire." Phytopathology® 89, no. 5 (May 1999): 414–20. http://dx.doi.org/10.1094/phyto.1999.89.5.414.
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Isolates of Rhizoctonia solani were obtained from plant and soil samples that had been systematically collected in a field experiment in Côte d'Ivoire to study the diversity of the pathogen and the influence of three different rice rotations on the pathogen population. Characterization by morphology, anastomosis testing, pathogenicity testing, and restriction fragment length polymorphisms (RFLPs) of AT-rich DNA (AT-DNA) showed that there were no differences in isolates from different experimental plots, suggesting that the soil as well as the plant population of the fungus was indistinguishable throughout the experiment and was not influenced by crop rotation. Analysis of AT-DNA showed that the isolates obtained from plant material and one from soil shared a distinct banding pattern, identical with the AT-DNA RFLP obtained for the reference strain of anastomosis group 1 (AG-1). The remaining soil isolates produced a consistent RFLP pattern that was distinct from that of the plant isolates. Morphological characterization of isolates produced two major clusters consisting of the same groups of isolates as found by AT-DNA RFLP. Diversity in morphological characters was much higher in plant than in soil isolates and indicated that the population might consist of several clones. Anastomosis testing revealed that soil as well as plant isolates were able to fuse with the tester strain of AG-1. Significant differences in disease severity were observed between the two groups of isolates in pathogenicity tests on rice plants, with plant isolates being distinctively more virulent.
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Djéda, Franck Arnaud Gnahoré, Valérie Carole M’Bengue Gbonon, Flore Bernadette Diplo, Safiatou Coulibaly, Akandji Osseni, Mamadou Sekongo, Jean David N’Guessan, Joseph Allico Djaman, and Mireille Dosso. "Evaluation of Hormone Quantification as an Orientation Screening in the Diagnosis of Hormone-Dependent Breast Cancers in Women in Abidjan, Côte d'Ivoire." Journal of Applied Life Sciences International 26, no. 2 (April 29, 2023): 57–66. http://dx.doi.org/10.9734/jalsi/2023/v26i2602.
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Aim: Estrogens and progesterone are essential for breast development in women. Paradoxically they promote the development of breast cancer, through the stimulation and proliferation of cells by the action of hormone receptors. In Côte d'Ivoire, more than half of all diagnosed cases of breast cancer are hormone-dependent. Because of the link between female hormones and breast cancer, the consideration of certain factors, such as the period of influence of hormones (estrogen and progesterone) as well as their quantification, could be considered in orientation screening for hormone-dependent breast cancer.
Methodology: A case-control study conducted at the Cancerology Department of the Treichville University Hospital, the National Blood Transfusion Centre, and the Pasteur Institute of Côte d'Ivoire recruited 85 participants, including 39 cases and 46 non-menopausal and menopausal controls. Socio-demographic information and the participants' clinical status were collected through a questionnaire and consultation of the medical file. Blood samples were taken in dry red tubes with a coagulation activator on the day of inclusion for postmenopausal women and during the follicular phase for non-menopausal women (between days 4 and 7 of the menstrual cycle). The quantification of hormones (estrogen, progesterone, FSH, and LH) was performed by immunoassay on the Cobas e411 Analyser®.
Results: Postmenopausal cases had early menarche (13 years) and late menopause (52.46 years) compared to controls and also had slightly higher mean plasma oestradiol 2 and progesterone levels (P=0.04; P=0.017). Among these cases, those with ER+ tumors had slightly higher mean plasma oestradiol-2 levels (15.28 pg/mL) than those with ER- tumors (9.20 pg/mL) (P=0.03).
Conclusion: The epidemiological investigation and the quantification of hormones in the participants' blood plasma revealed a positive association between the period of influence of these hormones, their concentrations, and hormone-dependent breast cancer in postmenopausal women.
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Haffiata KONE-SORO, Kisselmina Youssouf KONE, Séri Serge GUÉDÉ, Doudjo SORO, and Koffi David AKAKI. "Biochemical variation in traditional black plum nectar’s quality during storage." World Journal of Advanced Research and Reviews 16, no. 2 (November 30, 2022): 665–72. http://dx.doi.org/10.30574/wjarr.2022.16.2.1212.
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In Côte d'Ivoire, the non-alcoholic beverage industry is gradually turning to fruits from local wild species. More and more products from the latter are entering the market. Black plum, fruit of Vitex doniana, very pleasant and rich in bioactive compounds, has been transformed into nectar without the addition of preservatives. As a result, this product remains subject to a possible alteration of its nutritional quality and to reduction of its shelf life. Monitoring of the evolution of certain biochemical parameters of traditional nectar of black plums stored at different temperatures, for three (3) months, was carried out with the aim of highlighting the influence of temperature and storage duration on its nutritional quality but also to be able to determine its best use-by date, in order to guarantee best preservation of nutritional qualities. Black plum nectar used for this work was made from fruits, harvested in three (3) regions of northern Côte d'Ivoire and using a process modeled on traditional technique. Biochemical analyzes was carried out using the classic methods analysis. At the end of this study, we note an increase in acidity and soluble dry extract of traditional nectar linked to the rise in storage temperature. Vitamin C losses are minimal when this storage temperature is low. The longer the shelf life of nectar, the more it registers a decline in its nutritional value. Temperature that allows better nutritional preservation of black plum traditional nectar remains that of refrigeration (4 °C). However, at this temperature, its shelf life cannot exceed ten (10) weeks if you want to enjoy its benefits.
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N'GUESSAN, Affoué Sylvie Rachelle, Koutouan AYOLIE, Sopie Edwige Salomé YAPO, Yao Kouakou Francois KONAN, Achi Laurent N’CHO, Kouakou Désiré N’GORAN, Dramane KONE, Yatty Justin KOUADIO, and Tanoh Hilaire KOUAKOU. "The Induction of High-Frequency Callus with an Elite Cotton (Gossypium Hirsutum L.) from Côte d'Ivoire." JOURNAL OF ADVANCES IN BIOTECHNOLOGY 8 (November 7, 2019): 1104–17. http://dx.doi.org/10.24297/jbt.v8i0.8503.
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In cotton, factors such as carbon sources, hormonal combination, and type of explant influence the responses to callus induction. In this study callus induction was optimized to get high-frequency callus in cotton. Different carbon sources were tested, and among them, glucose at 3% was found to be the best carbohydrate in callus induction. Culture medium supplemented with 2,4-D (0.1 mg.L-1) and KIN (0.5 mg.L-1) gave a high callogenesis response, unlike other hormonal combinations. With explants, hypocotyl (72.93%) appeared easier to induce callus than cotyledon (48.75%) following root (37.5%). So, carbone sources, hormone, and their concentration affect significantly callus induction. The highest frequency of callus induction was then observed when hypocotyl explants were cultured on medium supplemented with 0.1 mg.L-1 of 2,4-D in combination with 0.5 mg.L-1 of KIN and 3% glucose. The induced-callus obtained were friable and of high quality. The other types of combinations resulted in the formation of compact callus with sometimes roots emerging from it. The present study may provide an efficient protocol to improve the callogenesis responses by adjusting the carbohydrates, the hormonal regime, and the type of explant to be cultured for a high-frequency callus induction of the Y331B-R5 cotton cultivar.
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RASO, G., B. MATTHYS, E. K. N'GORAN, M. TANNER, P. VOUNATSOU, and J. UTZINGER. "Spatial risk prediction and mapping of Schistosoma mansoni infections among schoolchildren living in western Côte d'Ivoire." Parasitology 131, no. 1 (March 24, 2005): 97–108. http://dx.doi.org/10.1017/s0031182005007432.
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The objectives of this study were (1) to examine risk factors for Schistosoma mansoni infection among schoolchildren living in western Côte d'Ivoire, and (2) to carry forward spatial risk prediction and mapping at non-sampled locations. First, demographic and socio-economic data were obtained from 3818 children, aged 6–16 years, from 55 schools. Second, a single stool sample was examined from each child by the Kato-Katz technique to assess infection status of S. mansoni and its intensity. Third, remotely sensed environmental data were derived from satellite imagery and digitized ground maps. With these databases a comprehensive geographical information system was established. Bayesian variogram models were applied for spatial risk modelling and prediction. The infection prevalence of S. mansoni was 38·9%, ranging from 0% to 89·3% among schools. Results showed that age, sex, the richest wealth quintile, elevation and rainfall explained the geographical variation of the school prevalences of S. mansoni infection. The goodness of fit of different spatial models revealed that age, sex and socio-economic status had a stronger influence on infection prevalence than environmental covariates. The generated risk map can be used by decision-makers for the design and implementation of schistosomiasis control in this setting. If successfully validated elsewhere, this approach can guide control programmes quite generally.
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Schumann, Anne. "A GENERATION OF ORPHANS: THE SOCIO-ECONOMIC CRISIS IN CÔTE D'IVOIRE AS SEEN THROUGH POPULAR MUSIC." Africa 82, no. 4 (November 2012): 535–55. http://dx.doi.org/10.1017/s0001972012000496.
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ABSTRACTCôte d'Ivoire has travelled full circle from economic success (from 1960 to about 1979) to failure (from the 1980s onwards) in little more than a generation. In the early 1990s, Zouglou, today Côte d'Ivoire's internationally best-known music, emerged at the university residences of the University of Abidjan in the Yopougon quarter. The young people who were to become the ‘Zouglou generation’ were precisely the generation that bore the brunt of this economic deterioration. Zouglou was born at a time when, as a result of an unprecedented economic crisis and the attendant structural adjustment measures, university students experienced a general downgrading not only as students but also as future graduates hoping to find employment. In addition, the number of students and school pupils who were unable to complete their education grew considerably during this time. As this article demonstrates, these phenomena had a profound influence on the development of the philosophy associated with Zouglou music. Accordingly, Zouglou singers have called themselves the ‘sacrificed generation’. Indeed, the many songs about orphans in Zouglou music can be read as a symbolic statement about this experience: the sense that Ivoirian youth have been abandoned by their elders, their families and the political authorities is unmistakable in the words of Zouglou songs consoling such (metaphorical) orphans. Zouglou music has become an important platform through which this generation has been able to express itself, as well as a site for oral street poetry and collective catharsis. The article discusses the content of these songs, as well as interviews with Zouglou singers on this matter, to investigate how Zouglou, as a cultural phenomenon, grew out of the experience of a generation.
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Ouattara Abdoulaye, Diomande Masse, and Fofana Daouda. "Influence of the incorporation of cashew meal (Anacardium occidental) in feed on the laying performance of hens (ISA Brown) in Côte d'Ivoire." International Journal of Life Science Research Archive 4, no. 1 (March 30, 2023): 232–43. http://dx.doi.org/10.53771/ijlsra.2023.4.1.0043.
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In Côte d'Ivoire, the increase in the price of protein raw materials makes poultry production too costly. This study was carried out to develop new sources of vegetable protein (cashew cake) for feeding laying hens during the laying period. For this, 180 19-week-old ISA Brown hens were used. They were housed in 4 boxes, 45 each. These constituted batches were fed T0 (control), T1 (100% cashew meal as main vegetable protein source), T2 (50% cashew meal) and T3 (95 % cashew meal). Bromatological analysis of the feeds revealed an excellent nutrient content. Feed intake, average number of eggs laid, average cumulative egg weight, feed conversion ratio, and egg laying rate were significantly (p<5%) influenced by the formulation. Cashew meal-based feeds improved egg-laying parameters but not significantly. The food supply for chickens was 93.16 ± 11.35 g / d /chicken (T0), 68.38 ± 13.67 g / d / chicken (T1), 85.67 ± 11.23 g / d / chicken (T2) et 65.88 ± 10.38 g / d / chicken. The number of eggs laid was 29.13 ± 8.77 eggs / d (T0), 11.89 ± 7.03 eggs / d (T1), 24.80 ± 7.85 eggs / d (T2) and 13.51 ± 7.57 eggs / d (T3). The average cumulative egg weight was 1645.86 ± 538.63 g / d (T0), 688.36 ± 445.41 g / d (T1), 1356.83 ± 449.62 g / d (T2) and 776.63 ± 467.51 g / d (T3). The consumption index was 3.84 ± 5.53 (T0), 7.26 ± 11.31 (T1), 4.16 ± 6.19 (T2) and 5.13 ± 8.48 (T3). Laying rate was 64.73 ± 19.51% (T0), 26.42 ± 15.64 % (T1), 55.12 ± 12.46% (T2) and 30.03 ± 16.82% (T3). The incorporation of cashew meal in the feed of laying hens as the main source of protein should allow for a variety of protein raw materials to correct any difficulties encountered by some table egg producers in Côte d’Ivoire.
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Kouassi, Joseph A. K., Emmanuelle Normand, Inza Koné, and Christophe Boesch. "Bushmeat consumption and environmental awareness in rural households: a case study around Taï National Park, Côte d'Ivoire." Oryx 53, no. 2 (June 20, 2017): 293–99. http://dx.doi.org/10.1017/s0030605317000333.
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AbstractConsumption of bushmeat, a staple food of people living in the vicinity of protected areas, is a challenge for the conservation of wildlife. The underlying factors driving this consumption are, however, relatively understudied, particularly among rural households, and improved understanding would facilitate the development of conservation strategies. We therefore aimed to identify the factors that influence bushmeat consumption in rural households to the west of Taï National Park, in Côte d'Ivoire. We carried out enquiries in a total of 144 rural households in 20 localities during July–December 2012. Bushmeat, the majority of which comprised rodents and bovids, accounted for 13% of the animal protein consumed in these households. This consumption was significantly higher in households in which poverty was more acute (low annual income and more dependent children). We found that repeated awareness campaigns involving theatre performances and/or film screenings (multimedia campaigns) contributed to a decrease in bushmeat consumption. This decrease exceeded 62% after exposure to four multimedia campaigns. We highlight the importance of awareness campaigns for reducing consumption of wild animals, and demonstrate the importance of recurring multimedia campaigns to maximize the impact of such conservation activities in rural communities.
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Bilé, Wadja Jean. "VIH/sida, Dévoilement du Statut Sérologique et Résilience au Traitement Antirétroviral chez les Adolescents d’Adzopé." European Scientific Journal, ESJ 19, no. 25 (September 30, 2023): 67. http://dx.doi.org/10.19044/esj.2023.v19n25p67.
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En Côte d’Ivoire, le vécu de l’annonce du statut sérologique des adolescents vivant avec le VIH acquis en période périnatale se décline en plusieurs types de trajectoires. Le présent article explore l’influence du dévoilement de l’infection à VIH chez les adolescents d’Adzopé sur la résilience au traitement antirétroviral. A partir d’une étude qualitative, du 1er septembre au 31 décembre 2022, le Centre Hospitalier Régional d’Adzopé dans le Sud-Est de la Côte d’Ivoire a servi d’espace social de la production d’entretiens autobiographiques et semi-directifs recueillis auprès de quarante (40) personnes réparties comme suit : vingt (20) adolescents vivant avec le VIH/sida, huit (8) acteurs médicaux, cinq (5) parents, cinq (5) tuteurs, un dépositaire de la tradition et une autorité administrative. De la mise en sens de ces entretiens, il apparaît une mobilisation de stratégies par les parents/tuteurs dans la dissimulation de l’annonce du diagnostic aux adolescents. Outre ce fait, les résonnances émotionnelles vont succéder à la divulgation de la maladie en termes d’enjeux émotifs (colère, tristesse, choc). Pour surmonter ces écueils, diverses catégories d’acteurs (parents, tuteurs et les professionnels de santé) vont constituer une bouée de sauvetage pour les adolescents grâce au dévoilement du statut sérologique. Cela va légitimer une résilience au traitement antirétroviral.
In Côte d'Ivoire, the experience of the announcement of the serological status of adolescents living with HIV acquired during the perinatal period is divided into several types of trajectories. This article explores the influence of disclosure of HIV infection among adolescents in Adzopé on resilience to antiretroviral treatment. Based on a qualitative study, from September 1 to December 31, 2022, the Adzopé Regional Hospital Center in the South-East of Côte d'Ivoire served as a social space for the production of autobiographical and semi-autobiographical interviews. guidelines collected from forty (40) people distributed as follows: twenty (20) adolescents living with HIV/AIDS, eight (8) medical actors, five (5) parents, five (5) guardians, a custodian of tradition, and an administrative authority. From the meaning of these interviews, it appears a mobilization of strategies by the parents/guardians in the dissimulation of the announcement of the diagnosis to the adolescents. In addition to this fact, emotional resonances will follow the disclosure of the illness in terms of emotional issues (anger, sadness, shock). To overcome these pitfalls, various categories of actors (parents, guardians, and health professionals) will constitute a lifeline for adolescents by disclosing their HIV status. This will legitimize resilience to antiretroviral treatment.
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Antoine, Kobena Kouadio, and Biekoua Yadjoro Josué. "Sexual Minorities - Men who have Sex with Men1, Transgender2 and Lesbian3 Women in Côte d'Ivoire: Between Life Paths and Hesitations in the Process of Constructing Gender Identity." East African Scholars Multidisciplinary Bulletin 6, no. 04 (July 21, 2023): 37–44. http://dx.doi.org/10.36349/easjmb.2023.v06i04.002.
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The construction and acceptance of the identity or sexual orientation of sexual minorities by society and the individual are realities that are constantly in crisis. This reality is all the more perceptible in societies where minorities are strongly discriminated against as a result of certain social considerations. In Côte d'Ivoire, the legal vacuum on the issue of sexual minorities leaves them prey to practices that are sometimes demeaning to certain members of the community. This article provides an insight into the lives of some of Côte d'Ivoire's sexual minorities (MSM, TG and Lesbian) and the hesitations that mark the construction of their gender identity. Based on a qualitative approach with four (04) leaders of the LGBTQ+ community on the one hand, and referring to social identity theory on the other, it emerges that the construction process is discontinuous or disjointed due to hesitations created by internal and external factors. Internally, the individual's decisions or choices help to create hesitations or set up these situations. From an external point of view, the family or social context and certain discriminatory behaviours with regard to the sexual orientation of individuals have a strong influence on the acceptance and definition of a gender identity within this category of the population.
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Chadoeuf, J., J. C. Pierrat, D. Nandris, J. P. Geiger, and M. Nicole. "Modeling Rubber Tree Root Disease Epidemics with a Markov Spatial Process." Forest Science 39, no. 1 (February 1, 1993): 41–54. http://dx.doi.org/10.1093/forestscience/39.1.41.
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Abstract Root diseases of the rubber tree (Hevea Brasiliensis) due to Rigidoporus lignosus (Klotzsch) Imaz. and Phellinus noxius (Corner) G.H. Cunn spread along planting lines and cause serious damage. Various control methods exist. A mathematical model was developed which allows the influence of their various parameters on the dynamics of an epidemic to be evaluated. The health status of the trees on a planting line was considered as a Markov process. The model parameters were given a biological interpretation and estimated using the results of an epidemiological survey carried out in Côte d'Ivoire from 1977 to 1984. Hypotheses of influence of dead trees before the survey, stationarity of secondary infection, and development of initial infection were tested. By simulation of the main model, the parameters were linked to percentages of infected trees on each inspection and of healthy trees at the end of the epidemic, thereby allowing the effects of the control methods to be evaluated according to their nature, efficiency, and mode of application. FOR. SCI. 39(1):41-54.
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Djézou, KONAN, KOUADIO Kouassi Richard, GNANHOUA Guy Modeste, N’GUESSAN Kanga Anatole, and OBOUAYEBA Samuel. "CHARACTERIZATION OF THE NATURAL FLORA OF THE UNDERSTORY OF THE RUBBER PLANTATIONS IN SOUTHERN COTE D’IVOIRE: CASE OF THE RUBBER PLANTATIONS OF THE CNRA ANGUEDEDOU." International Journal of Agriculture and Environmental Research 09, no. 03 (2023): 406–24. http://dx.doi.org/10.51193/ijaer.2023.9310.
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Objective: The study was conducted in the rubber plantations of the National Agricultural Research Centre (CNRA) of Anguédédou in the south of Côte d'Ivoire, to characterize the natural biodiversity of the undergrowth of rubber plantations, through the floristic composition and the evolution of the number of species according to the age of the plantations. Methodology and results: The methodology focused on the surface inventory. Thus, 36 surveys of 20 m x 10 m, or 200 m², were installed and inventoried through the rubber plantations of different age classes ([1 to 5 years], [6 to 10 years], [11 to 20 years] and [21 to 40 years]), abandoned rubber plantations and secondary forest. Regeneration was evaluated in plots with a 5 m (25 m²) coastline. The results have shown that rubber plantations are rich in 130 natural plant species. With the exception of rubber plantations from 1 to 5 years and especially of abandoned rubber plantations, the influence of this crop on the natural flora is felt in plantations from 6 to 10 years, with only 34 species. However, this flora evolves with the aging of the plantations. In abandoned plantations, 75 species were inventoried with a good presence of endemic species such as Chlamydocarya macrocarpa, Angylocalyx oligophyllus, Chassalia kolly, Mussaenda tristigmatica. There are also some rare and/or endangered species such as Albizia adianthifolia, Baphia nitida, Commelina benghalensis, Culcasia scandens, Gloriosa superba, Greenwayodendron suaveolens, Millettia zechiana and Milicia excelsa. The floristic similarity between abandoned rubber plantations and secondary forest, indicates a shift from abandoned rubber plantations to forest formations with high regeneration density, mainly in abandoned plantations. Conclusion and application: The study showed that the impact of rubber culture is felt on the natural flora of young rubber plantations. However, when plantations are abandoned, the environment becomes secondary forest. This investigation deserves to be carried out in other rubber plantations of other ecological zones of Côte d'Ivoire.
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Rohner, Fabian, Christine Northrop-Clewes, Andres B. Tschannen, Patrice E. Bosso, Valérie Kouassi-Gohou, Juergen G. Erhardt, Mai Bui, Michael B. Zimmermann, and CG Nicholas Mascie-Taylor. "Prevalence and public health relevance of micronutrient deficiencies and undernutrition in pre-school children and women of reproductive age in Côte d'Ivoire, West Africa." Public Health Nutrition 17, no. 9 (September 4, 2013): 2016–28. http://dx.doi.org/10.1017/s136898001300222x.
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AbstractObjectiveTo provide nationally representative data on the prevalence of anaemia, vitamin A and Fe deficiencies among pre-school age children (pre-SAC) and non-pregnant women of reproductive age (WRA), and on vitamin B12and folate deficiencies in WRA, and the influence of inflammation on their interpretation.DesignA cross-sectional survey to measure anthropometry, malaria parasitaemia and micronutrient status. Specifically, blood samples were analysed for Hb, plasma ferritin, soluble transferrin receptors, C-reactive protein, α1-acid glycoprotein, retinol-binding protein, vitamin B12and folate.SettingCôte d'Ivoire in 2007.SubjectsNine hundred and twenty-eight WRA and 879 pre-SAC.ResultsIn WRA, prevalence ofPlasmodiumparasitaemia (5 %) was low, but inflammation (34 %) was higher. Anaemia was a severe public health problem and prevalence differed by residency and eco-region. Inflammation-adjusted Fe deficiency was highest in urban areas (20 %). Nationally, folate deficiency was 86 %, higher in urban areas and varied by eco-region. Prevalence of vitamin B12deficiency was low but higher in the rural areas and the north. Inflammation-adjusted vitamin A deficiency was very low (1 %). In pre-SAC, prevalence of inflammation (67 %) andPlasmodiumparasites (25 %) was high; the latter was associated with poverty, rural residency and higher ferritin concentrations. Anaemia was classified as a severe public health problem (72 %), and was higher in rural areas (76 %) and the north (87 %). A quarter of pre-SAC suffered from vitamin A deficiency (inflammation-adjusted) and prevalence of undernutrition was high.ConclusionsPrevalence of inflammation,Plasmodiumparasitaemia and micronutrient deficiencies were high in Côte d'Ivoire, particularly in pre-SAC. Nutritional interventions should be accompanied by strategies to reduce exposure to infections.
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Fresnel Boris, CACHON, ATINDEHOU Ménonvè Mègnissè, and KOUKOUI Omédine. "Urban PM2.5 Air Pollution in Sub-Saharan Africa: A Comparative Study Between Case of Benin, Côte d'Ivoire and Senegal." International Journal of Research and Review 10, no. 1 (January 26, 2023): 444–45. http://dx.doi.org/10.52403/ijrr.20230151.
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The aim of this study is to investigate the Sub-Saharan Africa air pollution in Côte d’Ivoire, Senegal, and Benin by studying fines particles PM2.5 and to bring out their physicochemical characteristics in order to have a better knowledge on the African air pollution. Though these countries don’t share the same borders, their urban environments reveal similarities as regards higher concentrations of PM2.5. Likewise, similar repartitions of trace elements were recorded in the three countries. The ratio of specific surface area to the proportion of 2.5 µm fraction was 0.1 in the three countries. This ratio could be used to investigate African urban air. Moreover, xylene/ethylbenzene ratio was very high (11.1 in Senegal and 4.2 in Benin). This suggests a high photochemical reactivity attributable to the greatest presence of ozone in atmosphere. All results indicated that its main cause is traffic emission. Others studies in African cities are necessary in order to exclude the possible industrial dust and soil influence. Keywords: Air pollution, Particulate matter, Sub-Saharan Africa, Physicochemical characterization, Diagnostic ratio
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Kouakou, Yao Kouman Nestor, Jéremie Gala Bi Trazié, and Albert Yao-Kouamé. "Physico-chemical Quality of Soils under Cocoa Farm in Koffikro-Affema (Aboisso) in South-East of Côte d'Ivoire." European Journal of Agriculture and Food Sciences 3, no. 6 (December 12, 2021): 47–54. http://dx.doi.org/10.24018/ejfood.2021.3.6.411.
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The study was conducted in Koffikro-Affema village located in the South-East of Côte d'Ivoire to assess the morpho-physical and chemical quality of soils under cocoa farm, for the management of early degradation of orchards. Representative soil samples were taken by horizon under degraded cocoa farms after a morpho-pedological characterisation. These samples were then analysed in the laboratory for fertility parameters. The results indicate that the cocoa farms have a high rate of degradation and the study made it possible to identify the soil characteristics associated not only with the degradation of cocoa trees, but also with the drop in yield. These are the rate of coarse grains greater than 50%, the low organic matter content (less than 3.5%), a very slow rate of mineralisation (C/N > 12), poor internal drainage and the acidic pH of the soil (4.4-5.5). The soils surveyed are highly desaturated to moderately saturated and the main characteristics of the absorbing complex indicate that they are unfavourable for cocoa. Indeed, these soils are deficient in K+ (<0.2 cmol/kg), Ca2+ (between 5.1 and 11.41 cmol/Kg) and assimilable Nitrogen (˂0.2 cmol/Kg). Similarly, the Mg2+/K+ ratio of less than 3 shows that they are magnesium deficient. The results also revealed an influence of the topographical position on the degradation of cocoa trees with, on the upper and middle slopes, strongly gravelly and poorly drained horizons, associated with the degradation of cocoa trees. On the other hand, on the lower slopes, these soils are deep, not gravelly, with good growth of cocoa trees and low yields.
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Samuel, Kouadio Oi Kouadio, Yapo Edwige Sopie Salomé, Silue Oumar, Adou Bini Yao Christophe, and Kouakou Tanoh Hilaire. "Influence of Carbohydrates on Callus Proliferation During Somatic Embryogenesis in Pineapple [Ananas Comosus (L.) Merr. (Bromeliaceae) Var. Cayenne Smooth Cultivar CI 16]." European Scientific Journal, ESJ 14, no. 15 (May 31, 2018): 287. http://dx.doi.org/10.19044/esj.2018.v14n15p287.
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The improvement of pineapple (Ananas comosus var. Smooth Cayenne) by means of in vitro culture is less studied in Côte d'Ivoire despite the importance of this plant for this country’s economy. Our work consisted in highlighting nature and concentration effects of carbohydrates on the proliferation of calli in pineapple as a prelude to efficient embryogenesis. Callus proliferation was carried out from the base of pineapple vitroplants leaves. Thirty (30) explants were cultured on the tested culture medium. MS medium (micro- and macro elements of Murashige and Skoog) supplemented with vitamin Gamborg B5 was used as base medium to which were added 0.05 mg/L BAP, 3 mg/L picloram, 2 mg/L glycine, 1,000 mg/L glutamine, 100 mg/L casein hydrolyzate and 30 g/L carbohydrate. Sucrose was tested at different concentrations (20, 25, 30, 35 and 40 g/L). The results revealed that callus proliferation is strongly influenced (p ˂ 0.0001) by nature and concentration of carbohydrate. Sucrose with the highest dry matter content (61.34 mg) has a higher callogenic potential than the other studied carbohydrates. The concentration of 30 g/L sucrose significantly improved the calli proliferation in pineapple. Galactose and maltose were less favorable to proliferation.
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Siene, Laopé Ambroise Casimir, Mohamed Doumbouya, Mohamed Sahabane Traore, Mariame Conde, Tah Valentin Felix N’guettia, and Mamadou Kone. "Effet de quatre types de fertilisants sur la croissance et la productivité de deux génotypes de maïs (Zea mays L.) en cas d’un semis tardif à Korhogo au Centre-Nord de la Côte d’Ivoire." International Journal of Biological and Chemical Sciences 14, no. 1 (April 3, 2020): 55–68. http://dx.doi.org/10.4314/ijbcs.v14i1.6.
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Face à un appauvrissement des sols et une irrégularité des pluies du fait du changement climatique, une étude a été entreprise sur la culture du maïs au Centre-Nord de la Côte d’Ivoire. Elle avait pour objectif d’évaluer l’influence de quatre types de fumures sur le potentiel agronomique de deux génotypes de maïs (Zea mays L.) en cas de contrainte hydrique de fin de cycle et d’infertilité des sols. Le dispositif expérimental a été un split-plot, dont le premier facteur a été les fertilisants et le second, la variété. Les résultats ont montré que les fumures ont influencé les durées des phases végétative et reproductive en plus du rendement. Les fumures fiente de poulet et déjection de boeuf ont permis d’obtenir un rendement qui est égal à six fois celui obtenu avec le témoin de la variété à grain noir malgré la contrainte hydrique. Aussi, la fumure fiente de poulet a eu une tendance à réduire le cycle de culture et favoriser une meilleure croissance et un bon développement des plantes. L’utilisation de ces fumures en culture du maïs, pourrait constituer une alternative aux conséquences drastiques du changement climatique.
© 2020 International Formulae Group. All rights reserved.
Mots clés: Fertilisants, maïs (Zea mays L.), potentiel agronomique, rendement, contrainte hydrique
English Title: Effect of four types of fertilizers on the growth and productivity of two maize genotypes (Zea mays L.) in the event of late planting in Korhogo in North-Central Côte d'Ivoire
English Abstract
Faced with soil depletion and irregular rains due to climate change, a study was undertaken on maize cultivation in North-Central Côte d'Ivoire. Its objective was to assess the influence of four types of manure on the agronomic potential of two maize genotypes (Zea mays L.) in cases of water stress and soil infertility. The experimental set-up was a split-plot, the first five-level factor being fertilizers and the second two-level factor being variety. Observations were made on phenology, growth parameters and yield. The results showed that manure influenced vegetative and reproductive time, growth parameters and yield. In terms of yield, chicken droppings and beef droppings were the most effective. They yielded six times the yield obtained with the black-grain variety control despite the water constraint at the end of the cycle. Also, chicken manure has had a tendency to reduce the growing cycle and promote better growth and plant development. The use of these manure in maize cultivation could be an alternative to the drastic consequences of climate change.
© 2020 International Formulae Group. All rights reserved.
Keywords: Fertilizers, corn (Zea mays L.), agronomic potential, yield, water constraint
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Mathieu Dogba, Ménéké Distel Kougbo, Amenan Sylvie Konan, and Djah François Malan. "Allelopathic effects of aqueous leaf extracts of five invasive species in Côte d'Ivoire on maize (Zea mays) and rice (Oryza sativa)." International Journal of Scholarly Research and Reviews 2, no. 1 (March 30, 2023): 001–10. http://dx.doi.org/10.56781/ijsrr.2023.2.1.0034.
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Chromolaena odorata, Euphorbia heterophylla, Fleischmannia microstemon, Porophyllum ruderale and Synedrella nodiflora are five invasive plants in agrosystems in Côte d'Ivoire. They strongly influence the structure and diversity of native plant communities. In addition, they can compete for water and nutritional resources with cultivated plants, leading to a decrease in agricultural yield. This competition often occurs through the emission of allelochemicals that prevent seed germination or inhibit the development of other species. Thus, this study aims to assess the allelopathic effects of these five species on maize and rice, two crops generally used in food self-sufficiency programmes. To this end, the seed germination, root and stem growth of these crops watered with different leaf extracts of these five species were monitored in the laboratory. All five species were found to have allelopathic effects on maize and rice development. However, the action of the allelochemicals is specific to the target plant organs and increases with the concentration of the extracts. The study shows that of the five plants, C. odorata, E. heterophylla and F. microstemon are the most damaging as they have a more pronounced effect on seed germination.
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Yah Gwladys Gnamien, Bi Tra Jean-Innocent Nanti, N'dri Jacob Kouassi, N'guessan Kouame, Koutoua Ayolié, and Yatty Justin Kouadio. "Influence of seeding density on agronomic parameters of cowpea (Vigna unguiculata L.) accession grown in Daloa, west center of Côte d’Ivoire." GSC Biological and Pharmaceutical Sciences 22, no. 3 (March 30, 2023): 039–48. http://dx.doi.org/10.30574/gscbps.2023.22.3.0102.
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Cowpea (Vigna unguiculata L.) is most important food legume in tropical regions of Africa. In Côte d'Ivoire, its cultivation is neglected and is carried out on small surfaces with a strong concentration in North of the country. The objective of this study was to determine, in addition to the sowing density, the ideal number of plants per sowing hole for a better cowpea production. Experimental design used was a completely randomized Fisher block with three replications and six treatments per block. The tested spacings with the number of plants per sowing hole are : 20 cm x 20 cm x 01 plant per sowing hole, 20 cm x 20 cm x 02 plants per sowing hole; 30 cm x 30 cm x 01 plant per sowing hole, 30 cm x 30 cm x 02 plants per sowing hole; 40 cm x 40 cm x 01 plant per sowing hole, 40 cm x 40 cm x 02 plants per sowing hole. Observations were made on nine agronomic parameters (plant height, number of leaves, number of branches, span, fresh biomass, number of pods, fresh weight of pods, dry weight of pods and grain weight. Results show that seeding densities and number of plants per sowing hole significantly influence the agronomic parameters. Thus, the lowest sowing densities (62500 plants/ha) corresponding to 40cm x 40cm spacing with one plant per sowing hole gave the best yields while the highest densities (250000 plants/ha) corresponding to 20cm x 20cm spacing with two plants per sowing hole gave the lowest yields for all agronomic parameters.
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Léon, Jean-François, Aristide Barthélémy Akpo, Mouhamadou Bedou, Julien Djossou, Marleine Bodjrenou, Véronique Yoboué, and Cathy Liousse. "PM<sub>2.5</sub> surface concentrations in southern West African urban areas based on sun photometer and satellite observations." Atmospheric Chemistry and Physics 21, no. 3 (February 10, 2021): 1815–34. http://dx.doi.org/10.5194/acp-21-1815-2021.
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Abstract. Southern West Africa (SWA) is influenced by large numbers of aerosol particles of both anthropogenic and natural origins. Anthropogenic aerosol emissions are expected to increase in the future due to the economical growth of African megacities. In this paper, we investigate the aerosol optical depth (AOD) in the coastal area of the Gulf of Guinea using sun photometer and MODIS satellite observations. A network of lightweight handheld sun photometers have been deployed in SWA from December 2014 to April 2017 at five different locations in Côte d'Ivoire and Benin. The handheld sun photometer measures the solar irradiance at 465, 540 and 619 nm and is operated manually once per day. Handheld-sun-photometer observations are complemented by available AERONET sun photometer observations and MODIS level 3 time series between 2003 and 2019. MODIS daily level 3 AOD agrees well with sun photometer observations in Abidjan and Cotonou (correlation coefficient R=0.89 and RMSE = 0.19). A classification based on the sun photometer AOD and Ångström exponent (AE) is used to separate the influence of coarse mineral dust and urban-like aerosols. The AOD seasonal pattern is similar for all the sites and is clearly influenced by the mineral dust advection from December to May. Sun photometer AODs are analyzed in coincidence with surface PM2.5 concentrations to infer trends in the particulate pollution levels over conurbations of Abidjan (Côte d'Ivoire) and Cotonou (Benin). PM2.5-to-AOD conversion factors are evaluated as a function of the season and the aerosol type identified in the AE classification. The highest PM2.5 concentrations (up to 300 µg m−3) are associated with the advection of mineral dust in the heart of the dry season (December–February). Annual means are around 30 µg m−3, and 80 % of days in the winter dry season have a value above 35 µg m−3, while concentrations remain below 16 µg m−3 from May to September. No obvious trend is observed in the 2003–2019 MODIS-derived PM2.5 time series. However the short dry period (August–September), when urban-like aerosols dominate, is associated with a monotonic trend between 0.04 and 0.43 µgm-3yr-1 in the PM2.5 concentrations over the period 2003–2017. The monotonic trend remains uncertain but is coherent with the expected increase in combustion aerosol emissions in SWA.
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Kouadio, Eugène Jean Parfait, Kouakou Kouadio, Kouassi Martial-Didier Adingra, and Martin Kouadio. "Antioxidant Activities, Phenolic Compounds and Organic Acids of Raw and Boiled Berries of Solanum Torvum Swartz From Eastern Côte d’Ivoire." Indonesian Food Science and Technology Journal 6, no. 1 (December 30, 2022): 7–18. http://dx.doi.org/10.22437/ifstj.v6i1.19229.
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Berries of solanum torvum, referred to as wild eggplant, are widely consumed in eastern Côte d'Ivoire in boiled form in sauces or soups. This study aimed to evaluate the antioxidant potential of these fruits through the estimation of antioxidant capacities of the extracts, identification and quantification of phenolic compounds and organic acids of raw berries and boiled berries to gauge the influence of this cooking. Results showed that boiling caused a considerable decrease in the antioxidant capacity of S. torvum berry extracts. By DPPH scavenging, the effective concentration (EC50) value of extract increased from 20.00 to 42.20 µg/mL, respectively for raw and boiled berries. Regarding EC50 values for antioxidant activities via FRAP, the values of 75.10 and 87.20 µg/mL were obtained, respectively for raw and boiled berries extract. In terms of phenolic compounds, the most predominant were catechin and gallic acid with respective contents of 1.06 and 0.86 mg/kg in the raw berries; 0.86 and 0.71 mg/kg in boiled berries, demonstrating the decrease in levels of these compounds by boiling. Organic acids showed the same decreasing trend during boiling. However, using cooking water when preparing soups or sauces could minimize these losses. In addition to this, one could consider other cooking methods such as steaming to better ensure nutrient retention
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Kpan, Wondouet Hippolyte, Affi Jeanne Bongoua-Devisme, Brahima Kone, Franck Michael Lemounou Bahan, Konan-Kan Hippolyte Kouadio, Kouassi Pla Adou, and Anselme Kan Louis Koko. "Effets combinés de la roche phosphatée et des fertilisants chimiques sur les paramètres agronomiques du riz pluvial dans trois zones agroécologiques de la Côte D’Ivoire." International Journal of Biological and Chemical Sciences 17, no. 7 (February 22, 2024): 2984–97. http://dx.doi.org/10.4314/ijbcs.v17i7.29.
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En Côte d’Ivoire, la surexploitation des parcelles rizicoles induit une acidification des sols, rend le phosphore peu disponible à la nutrition des cultures. Dans le but de tester l’efficacité agronomique des amendements phosphatés sur le riz pluvial dans trois zones agroécologiques (Man, Gagnoa et Bouaké), huit traitements à base de roche phosphatée du Maroc (RP) et de triple superphosphate (TSP) [T0a (témoin absolu, sans engrais) ; T0 (Pratique paysanne, NPK) ; T1 (100 RP+ 0% TSP) ; T2 (90% RP+ 10% TSP) ; T3 (80% RP+ 20% TSP) ; T4 (40% RP+ 60% TSP) ; T5 (20% RP+ 80% TSP) ; T6 (0% RP+ 100% TSP)] ont été élaborés et appliqués au champ. Nos résultats indiquent que les sols de Man et de Gagnoa ont un RDG respectivement 2,29 t.ha-1 et 1,92 t.ha-1 , et un RDP respectivement 3,13 t.ha-1 et 2,96 t.ha-1 plus élevés qu’à Bouaké (1,47 t.ha-1 RDG et 2,23 t.ha-1 RDP). Le taux d’augmentation relative du RDG par rapport à T0 est plus important à Man (300%) qu’à Gagnoa et Bouaké. Cette différence pourrait être lié au pH des sols des zones qui semble influencer l'efficacité agronomique des AP proposés. Toutefois, quelle que soit la zone d’étude la combinaison 80% de RP du Maroc et 20% TSP semble être le meilleur amendement.
English title: Combined effect of phosphate rock and chemical fertilizers on agronomic parameters of rainfed rice in three agro-ecological zones of Côte d'Ivoire
In Ivory Coast, the continuous exploitation of paddy soil year after year leads to long-term soil acidification, resulting in the unavailability of phosphorus and a restriction on crop production. To evaluate the agronomic effectiveness of phosphate amendment on rainfed rice cultivation in three agro-ecological zones of Côte d'Ivoire (Man, Gagnoa, and Bouaké), eight treatments were developed and applied within the fields. These treatments consisted of different combinations of Moroccan phosphate rock (PR) and triple super phosphate (TSP), namely, T0a (absolute control without fertilizer), T0 (peasant practice, NPK), T1 (100% RP + 0% TSP), T2 (90% RP + 10% TSP), T3 (80% RP + 20% TSP), T4 (40% RP + 60% TSP), T5 (20% RP + 80% TSP), and T6 (0% RP + 100% TSP). The results of our study indicate that the soils in Man and Gagnoa exhibited higher grain yields (GY), measuring 2.29 t.ha-1 and 1.92 t.ha-1 respectively, as well as higher straw yields (SY) of 3.13 t.ha-1 and 2.96 t.ha-1 respectively, in comparison to Bouaké, which had GY of 1.47 t.ha-1 and SY of 2.23 t.ha-1 . The relative rate of increase in grain yield compared with the control was more significant in Man (300%) than in Gagnoa (262,6%) and Bouaké (187,4%). This divergence could be attributed to the soil pH, which appears to influence the agronomic efficiency. Regardless of the study zone, the combination of 80% Moroccan PR and 20% TSP demonstrated optimal effectiveness as an amendment.
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Fokouo, Kouamé Elie, Kouakou Nestor Kouassi, Marc Adou, Yao Denis N DRI, Kablan Tano, and N’ uessan Georges Amani. "Influence of Storage Time on the Physicochemical, Microbiological and Sensory Characteristics of Dried Mango Slices (Mangifera indica L. Var Kent)Produced in Côte d'Ivoire." International Journal of Current Microbiology and Applied Sciences 11, no. 10 (October 10, 2022): 158–67. http://dx.doi.org/10.20546/ijcmas.2022.1110.019.
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The objective of this study was to determine the impact of storage time on biochemical, microbiological and sensory parameters of dried mango slices (Mangifera indica L. var Kent) produced in Côte d'Ivoire. Batches of 100 g of dried mango slices wrapped in polyethylene plastic and packed in cartons were stored for 9 months at 25°C for quarterly monitoring (T0, T3, T6 and T9) of analytical parameters. Storage time (T0 to T9) induced significant losses (P <0.05) of 37.14% of titratable acidity, of 5.62% vitamin A, 23.97% of vitamin C, 34.12% of oxalates and 8.13% of phytates in dried mango slices. A significant increase (P˂0.05) in flavonoids (13.81±0.10 to 16.20±0.2 mg/100g), polyphenols (14.02±0.10 to 16.41±0.01 mg/100g), moisture (11.13±0.94 to 16.15±1.91 g/100g), β-carotene (1.83±0.03 to 2. 09±0.02 mg/100g), total sugars (34.42±5.70 to 102.68±0.09 g/100g), reducing sugars (54.56±4.85 to 190.04±0.22 g/100g), and minerals were also observed from T0 to T9. Total aerobic mesophilic flora varied from 1.48±0.10 x 103 CFU/g (T0) to 1.55±0.36 x 106 CFU/g (T9), an increase of 4.73%. Only mango slices dried stored at T3 were appreciated by panelists. Mangoes slices dried up to 3 months of storagehave the best physicochemical, microbiological and sensory properties.
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Amalaman, Marc Auriol, Gil Mahé, Béh Ibrahim Diomande, Armand Zamblé Tra Bi, Nathalie Rouché, Zeineddine Nouaceur, and Benoit Laignel. "Analyse en ondelettes des séries temporelles aux stations de pluies et débits dans le bassin versant de Tortiya amont (Nord de la Côte d'Ivoire)." Proceedings of IAHS 385 (April 19, 2024): 365–70. http://dx.doi.org/10.5194/piahs-385-365-2024.
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Abstract. L'objectif de cette étude est d'analyser les liens entre les indices climatiques et la variabilité des séries de précipitations et de débits. Afin de mieux comprendre la non stationnarité des différentes stations, les données de débits et de pluviométries utilisées concernent la station de Tortiya (1960–1996). Les indices climatiques couplés à ces séries sont l'indice NAO (North Atlantic Oscillation) et l'ENSO (El Niño – Southern Oscillation) sur la même période d'étude. La méthodologie a consisté à appliquer l'analyse et la cohérence en ondelettes sur les séries temporelles. Ces méthodes ont mis en évidence les modes de variabilité dans les séries chronologiques : le mode infra annuel, le mode annuel et le mode interannuel (1–2 ans; 2–4 ans; 4–8 ans). D'une part, les résultats montrent que la variabilité du signal est expliquée dans les hautes fréquences (6 mois à 1 an) dans les différentes séries chronologiques. À cette fréquence, c'est le mode annuel (1 an) qui enregistre toute la variabilité du signal comprise entre 30 % et 70 %. D'autre part, ce travail présente aussi des signaux sur d'autres fréquences et périodes assez faibles. L'analyse en ondelette a révélé que le signal dominant est très largement significatif au niveau du cycle annuel. Par ailleurs, l'usage de la cohérence en ondelettes entre les indices climatiques (ENSO, NAO) et les précipitations, indiquent une forte influence du NAO sur les séries pluviométriques et de débits.
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Tetchi Nicaise, AKEDRIN, AKOTTO Odi Faustin, COULIBALY Kiyinlma, COULIBALY Siendou, and AKE Sévérin. "Monographie des légumineuses subligneuses utilisées pour la biofertilisation des sols dans les jachères améliorées dans la localité de Daloa (Côte d’Ivoire)." Journal of Animal & Plant Sciences 45, no. 1 (July 31, 2020): 7771–82. http://dx.doi.org/10.35759/janmplsci.v45-1.2.
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En Côte d’Ivoire, la pratique des cultures continues ont entrainé la pauvreté des sols en éléments nutritifs. Pour y remédier, des espèces biofertilisantes en occurrence des légumineuses subligneuses susceptibles d’influer sur la disponibilité des éléments nutritifs du sol sont plantées dans les jachères pour la restauration de la fertilité. Cette étude sur le recensement et les caractérisations physicochimiques du sol et des légumineuses utilisées comme biofertilisants dans les jachères a été conduite à Daloa. La caractérisation chimique de ces végétaux réalisée sur la biomasse racinaire fraîche séchée au four à 65 ° C pendant 72 heures puis broyée et tamisée à une taille de 0,5 mm, a porté sur les compositions totales en N, P, K, Ca, Mg, C. Quant à la caractérisation du sol prélevé à 0-20 cm de profondeur, le pH, la taille des particules, l'azote total, le carbone organique, la capacité d'échange de cations, le P disponible et le K ont été analysés. Les prospections réalisées dans ces jachères ont permis de recenser six légumineuses comme culture principale. Ces légumineuses sont majoritairement lianescentes (50 %) contre 33 % des herbacées et 17 % d’arbustes. Les caractéristiques chimiques des racines ont montré une différence de variation de l’azote du témoin (13 g kg-1) à Mimosa invisa (28 g kg-1). Les concentrations en N, P, K ont été maximales chez toutes les espèces à l’exception de Mimosa invisa et Crotalaria retusa. Cependant, chez Mimosa invisa , les fortes concentrations de CEC (13,8 cmolc kg-1) et de C (27 g kg-1) ont été enregistrées. Les concentrations de phosphores (3,9 g kg-1) et de potassiums (53 g kg-1 de K) sont maximales respectivement chez Crotalaria goreensis et Crotalaria retusa. L’usage de ces légumineuses semble indispensable à la reconstitution de l’horizon humifère donc susceptible de restaurer la fertilité du sol et d’influencer la croissance des cultures non fixatrice d’azote. Akedrin et al., 2020 Journal of Animal & Plant Sciences (J.Anim.Plant Sci. ISSN 2071-7024) Vol.45 (1): 7771-7782 https://doi.org/10.35759/JAnmPlSci.v45-1.2 7772 Monograph of subligneous legumes used for the biofertilization of improved fallow soils in Daloa (Côte d'Ivoire). ABSTRACT In Côte d'Ivoire, the practice of continuous cultivation has resulted in poor nutrient soils. To remedy this, biofertilizing species in the form of subligneous legumes likely to influence the availability of soil nutrients are planted in fallows to restore fertility. This study on the inventory and the physico-chemical characterization of the legume species used as biofertilizers in fallows was conducted in Daloa. The chemical characterization of these plants was carried out from fresh root biomass dried in an oven at 65 ° C for 72 hours then crushed and sieved to a size of 0.5 mm. The analyses related to the total compositions in N, P, K, Ca, Mg, and C. As for the characterization of the soil sampled at 0-20 cm depth, the pH, the size of the particles, Total nitrogen, the organic carbon, cation exchange capacity, available P and K were analyzed. Surveys carried out in these fallows have identified six legumes as the main crop. These legumes are mostly creeping (50%) compared to herbaceous (33%) and shrubs (17%). The chemical characteristics of the roots showed a difference in the variation of nitrogen from the control (13 g kg-1) to Mimosa invisa (28 g kg-1). Concentrations of N, P, and K were highest in all species except Mimosa invisa and Crotalaria retusa. However, in Mimosa invisa, high concentrations of CEC (13.8 cmolc kg-1) and C (27 g kg-1) were recorded. Similarly, the concentrations of phosphorus (3.9 g kg-1) and potassium (53 g kg-1 K) are maximum in Crotalaria goreensis and Crotalaria retusa respectively. The use of these legumes seems essential to the reconstruction of the humiferous horizon, therefore likely to restore soil fertility and influence the growth of crops that do not fix nitrogen.
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Damien, ABOBI Akré Hebert, SALLA Moreto, N’GANZOUA Kouamé René, KONATE Zoumana, GUEI Arnauth Martinez, and ZRO Bi Gohi Ferdinand. "EFFECTS OF VERMICOMPOST FERTILISATION ON SOME GROWTH PARAMETERS AND YIELD OF TOMATO (SOLANUM LYCOPERSICUM L). IN DALOA, WEST-CENTRAL OF CÔTE D’IVOIRE." International Journal of Agriculture and Environmental Research 08, no. 05 (2022): 655–71. http://dx.doi.org/10.51193/ijaer.2022.8505.
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The production of tomato, a very important vegetable for human consumption and the most widely grown in Africa, remains low to meet the needs of the Ivorian population. Also, mineral fertilisation with its certain contributions to the crop, remains costly and inaccessible to small farmers. The present study aims to assess the effects of organic fertilisation based on vermicompost on the growth and yield of the tomato Solanum lycopersicum L. In a Fisher block design. Three vermicompost treatments T20 (20 t/ha), T40 (40 t/ha), T60 (60 t/ha) and a control T0 were set up with four replicates in Daloa, west-central of Côte d'Ivoire. The germination rate of the tomato seeds was determined during the three weeks of nursery. The height, crown diameter and vigour index of the tomato plants were measured regularly, as well as the yield at the end of the trial. The main results show that the germination rate was higher with the lowest dose of vermicompost (20 t/ha) while the height, crown diameter and vigour index of the tomato plants increased more rapidly with increasing doses of vermicompost. Thus, the highest height (146.76 cm), the largest crown diameter (38.13 mm) and the highest vigour index (4.22) were obtained with the highest dose. Similarly, yield was favourably affected with increasing doses of vermicompost. The highest being obtained with T60. Increasing doses of vermicompost favourably influence tomato growth and yield. Organic fertilisation with vermicompost could be recommended to farmers in order to sustainably increase agricultural production.
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Beugré, N’Djiha Isabelle, Franceline Doh, Aubin Silvère Djiwha Danon, Kouassi Allou, and Mamadou Dagnogo. "Dynamique Saisonnière de Nedotepa curta (Homoptera, Cicadellidae) et Proutista fritillaris (Homoptera, Derbidae), Potentiels Vecteurs du Phytoplasme de la Maladie du Jaunissement Mortel du Cocotier de Grand-Lahou (Côte d’Ivoire)." European Scientific Journal, ESJ 18, no. 27 (August 31, 2022): 351. http://dx.doi.org/10.19044/esj.2022.v18n27p351.
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En Côte d’Ivoire, le cocotier (Cocos nucifera L.) est essentiellement cultivé sur le littoral ivoirien et constitue la principale culture de rente en assurant des revenus à plus de 20 000 familles. Cependant, la plante est sujette à plusieurs contraintes dont la plus inquiétante actuellement est le jaunissement mortel du cocotier de Grand-Lahou. Ce travail vise à étudier la dynamique saisonnière des potentiels vecteurs du phytoplasme de la maladie du jaunissement mortel du cocotier à Grand-Lahou (Nedotepa curta et Proutista fritillaris). Les insectes ont été collectés avec des pièges à glu, hissés à l’aide d’une corde dans la couronne des cocotiers de deux villages de Grand-Lahou (Badadon et Yaokro), d’octobre 2015 à septembre 2016. Sur ces deux sites, les fluctuations les plus importantes des populations de N. curta et P. fritillaris ont été observées en décembre 2015 et en février 2016. L’analyse de corrélation de Pearson réalisée entre quelques facteurs abiotiques et les fluctuations des populations de ces insectes montre que la température et les fluctuations de ces insectes ne sont pas significativement corrélées. Par contre, il existe une influence hautement significative et négative (r˃-0,7 ; p˂0,0001) de la pluviométrie sur les populations de ces insectes. Une influence significative et négative (r˃-0,7 ; p˂0,005) de l’humidité relative sur ces insectes a été également observée. Les potentiels vecteurs du jaunissement mortel du cocotier de Grand-Lahou pullulent donc au cours des périodes sèches de l’année. La température n’affecte pas le développement de ces insectes alors que la pluviométrie et l’humidité relative diminue leur développement.
In Côte d’Ivoire, the coconut tree (Cocos nucifera L.) is cultivated essentially on the coastline of Côte d'Ivoire. It is one of the main cash crops that provide income to close to 20,000 families. The plant is subject to several constraints of which the most troubling one among them is the coconut lethal yellowing of Grand-Lahou. This paper focuses on the seasonal dynamics of the potentials vectors of phytoplasma of the coconut lethal yellowing of Grand-Lahou (Nedotepa curta and Proutista fritillaris). The insects were collected with traps tights, hoisted with the help of a rope in the crown of the coconut trees of two villages of Grand-Lahou (Badadon and Yaokro), from October 2015 to September 2016. On these two sites, the most important fluctuations of the populations of N. curta and P. fritillaris were observed in December 2015 and in February 2016. The realized Pearson interrelationship analysis between some abiotic factors and the fluctuations of the populations of these insects show that the temperature and the fluctuations of these insects are not correlated meaningfully. On the other hand, there is a highly meaningful and negative influence (r˃-0,7 ; p˂0,0001) of rainfall on the populations of these insects. A meaningful and negative influence (r˃-0,7 ; p˂0,005) of the relative humidity on these insects were also observed. The potentials vectors of the coconut lethal yellowing of Grand-Lahou swarm can be seen during the dry periods of the year. Although the temperature does not affect the development of these insects, the rainfall and the relative humidity decrease their development.
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Djossou, Julien, Jean-François Léon, Aristide Barthélemy Akpo, Cathy Liousse, Véronique Yoboué, Mouhamadou Bedou, Marleine Bodjrenou, et al. "Mass concentration, optical depth and carbon composition of particulate matter in the major southern West African cities of Cotonou (Benin) and Abidjan (Côte d'Ivoire)." Atmospheric Chemistry and Physics 18, no. 9 (May 4, 2018): 6275–91. http://dx.doi.org/10.5194/acp-18-6275-2018.
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Abstract. Air quality degradation is a major issue in the large conurbations on the shore of the Gulf of Guinea. We present for the first time PM2.5 time series collected in Cotonou, Benin, and Abidjan, Côte d'Ivoire, from February 2015 to March 2017. Measurements were performed in the vicinity of major combustion aerosol sources: Cotonou/traffic (CT), Abidjan/traffic (AT), Abidjan/landfill (AL) and Abidjan/domestic fires (ADF). We report the weekly PM2.5 mass and carbonaceous content as elemental (EC) and organic (OC) carbon concentrations. We also measure the aerosol optical depth (AOD) and the Ångström exponent in both cities. The average PM2.5 mass concentrations were 32 ± 32, 32 ± 24 and 28 ± 19 µg m−3 at traffic sites CT and AT and landfill site AL, respectively. The domestic fire site shows a concentration of 145 ± 69 µg m−3 due to the contribution of smoking and roasting activities. The highest OC and EC concentrations were also measured at ADF at 71 ± 29 and 15 ± 9 µg m−3, respectively, while the other sites present OC concentration between 8 and 12 µg m−3 and EC concentrations between 2 and 7 µg m−3. The OC ∕ EC ratio is 4.3 at CT and 2.0 at AT. This difference highlights the influence of two-wheel vehicles using gasoline in Cotonou compared to that of four-wheel vehicles using diesel fuel in Abidjan. AOD was rather similar in both cities, with a mean value of 0.58 in Cotonou and of 0.68 in Abidjan. The seasonal cycle is dominated by the large increase in surface mass concentration and AOD during the long dry season (December–February) as expected due to mineral dust advection and biomass burning activities. The lowest concentrations are observed during the short dry season (August–September) due to an increase in surface wind speed leading to a better ventilation. On the other hand, the high PM2.5 ∕ AOD ratio in the short wet season (October–November) indicates the stagnation of local pollution.
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Mohamed Anderson YEO, Gnougon Nina COULIBALY, Sounta Oumar YEO, Kouassi Léopold KOUAKOU, Dan Gbongué Lucien GOGBEU, Tanoh Hilaire KOUAKOU, and Lacina COULIBALY. "Changes of physico-chemical parameters in relation to storage time and temperature of mango fruit cv. Kent harvested in northern Côte d'Ivoire for export purposes." World Journal of Advanced Research and Reviews 16, no. 2 (November 30, 2022): 058–73. http://dx.doi.org/10.30574/wjarr.2022.16.2.1124.
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The aim of this study was to evaluate the physicochemical parameters of mangoes for export. The results revealed that mangoes lose firmness after three days of storage and the pulp turns yellow-orange. The sugar content increases progressively along storage time. However, phenylalanine ammonia-lyase (PAL) activity decreases with storage time confirming the decrease of phenol content. As for the activity of polyphenoloxidases (PPO) and peroxidases (POD), it increased during the storage of mangoes suggesting a degradation of phenolic compounds during storage. Furthermore, the study reported a loss of firmness inversely proportional to the time (7, 14, 21-days) and temperature (4, 10, 14 °C) of mango storage. The pulp of mangoes stored at low temperature started to show orange color after 14 days of storage at 10 °C and after 7 days of storage at 14 °C. The sugar content of mangoes stored at 14 °C was higher than that of mangoes stored at 4 and 10 °C. Similarly, phenol content, PAL, PPO and POD activities were lower at 4 and 10 °C and high when mangoes were stored at 14°C. Therefore, storage time and temperature influence harvested mangoes physico-chemical parameters of mangoes. High storage times and temperatures promote rapid ripening of mangoes by increasing sugar content and color, and decreasing pulp firmness. Furthermore, phenol synthesis decrease and oxidation increase was observed. Also, low temperatures delay ripening and preserve the quality of mangoes for up to 21 days. This makes it possible to envisage an export without deterioration of mangoes, which requires a maritime transport of 14 days.
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KOUASSI, N' J., and I. A. ZORO BI. "EFFECT OF SOWING DENSITY AND SEEDBED TYPE ON YIELD AND YIELD COMPONENTS IN BAMBARA GROUNDNUT (VIGNA SUBTERRANEA) IN WOODLAND SAVANNAS OF COTE D'IVOIRE." Experimental Agriculture 46, no. 1 (October 1, 2009): 99–110. http://dx.doi.org/10.1017/s0014479709990494.
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SUMMARYBambara groundnut (Vigna subterranea) is one of the most promising food legumes in Africa, due to its agronomic and nutritional potential. To take advantage of these attributes, several research programmes gathering agronomic and genetic data are being implemented throughout Africa. In this context, the response of yield and yield components to sowing density and seedbed type were tested in a three-year (2005, 2006 and 2007) field experiment using a bambara groundnut landrace with a semi-bunch growth habit. Three plant population densities: 13 900 plants ha−1, 62 500 plants ha−1 and 250 000 plants ha−1 were coupled with two seedbed types – raised and flat. A factorial trial using a split-plot design with three replicates was set up to analyse seed yield and plant biomass, as well as nine yield components. Sowing density influenced significantly (p < 0.05) seed yield (direct relationship) and most of the yield components (inverse relationship). The highest seed yields were observed on high-density plots (4.11 ± 1.05 ha−1). In contrast, seedbed type and year of experiment did not influence significantly the marketable yield and plant biomass (p > 0.05). This result has been attributed to the suitability of the amount and distribution of rainfall and temperature for the production of bambara groundnut at the target site. Based on the trend of yield response, cultivation of landraces of bambara groundnut characterized by a semi-bunch growth habit at high density on flat seedbeds was suggested in woodland savannas of Côte d'Ivoire to enhance seeds yield and reduce labour.
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Allouko Jean-Renaud, Kressou Armand, Traoré Awa, and Bony Kotchi Yves. "Preliminary data on the structure of macroinvertebrate communities and the physicochemical conditions of the Toumanguié and Bosso rivers under the influence of agricultural activities in the Aboisso department (south-east, Côte d'Ivoire)." GSC Biological and Pharmaceutical Sciences 26, no. 1 (January 30, 2024): 001–9. http://dx.doi.org/10.30574/gscbps.2024.26.1.0542.
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The Toumanguié agricultural zone in the Sud-Comoé region of south-eastern Côte d'Ivoire contains several agricultural plantations and a dense and varied hydrographic system including the Bosso and Toumanguié rivers. However, knowledge of the ecological status of these two rivers is almost unavailable to the scientific community to assess the impact of agricultural activities. The purpose of this one-off study, carried out in March 2023, was to provide initial data on the physicochemical state and composition of macroinvertebrate communities in these two rivers. Four (4) sampling points were defined on these rivers. Measurements of the water physicochemical parameters (temperature, dissolved oxygen transparency, conductivity and pH) were taken in situ between 06:00 and 08:00 in the morning using a multiparameter, and some water samples were taken for the determination of nutrients. Macroinvertebrates were collected using a Van Veen bucket and a dip net. Analysis of the physicochemical parameters showed that the water in the Toumanguié agricultural zone was of relatively good quality and conducive to the survival of aquatic macroinvertebrates. However, the nutrient values indicated that the water was slightly polluted as a result of the degradation of organic matter. 34 taxa belonging to 26 families and 11 orders were identified, with a predominance of insects. Diptera were predominant. The taxa commonly collected in these rivers were: Cricotopus kisantuensis, Polypedilum fuscipenne, Chironominae and Diplonychus sp. The macroinvertebrate communities in these two rivers were not very diversified but were relatively balanced in terms of diversity index values.
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COYNE, D. L., K. L. SAHRAWAT, and R. A. PLOWRIGHT. "THE INFLUENCE OF MINERAL FERTILIZER APPLICATION AND PLANT NUTRITION ON PLANT-PARASITIC NEMATODES IN UPLAND AND LOWLAND RICE IN CÔTE D'IVOIRE AND ITS IMPLICATIONS IN LONG TERM AGRICULTURAL RESEARCH TRIALS." Experimental Agriculture 40, no. 2 (April 2004): 245–56. http://dx.doi.org/10.1017/s0014479703001595.
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Mineral fertilizer application and consequent plant nutrition has long been observed to influence associated plant-parasitic nematode population densities, offering the potential as a nematode management option. Observations were made on the influence of mineral fertilizer application on nematode populations on three separate long-term rice experiments, (differential mineral application on upland and on lowland rice, and P application on upland rice) undertaken between 1994 and 1997 in Côte d'Ivoire. In 1995, on upland rice, treatments with K or N withheld from the comprehensive mineral application treatment (range of elements including N, P, K, Ca, Mg and Zn) led to lower densities of Pratylenchus zeae at harvest than the comprehensive mineral application. By withholding K or Mg, Helicotylenchus pseudorobustus densities were greater than with either the control (no mineral application) or comprehensive mineral application in the same year. No differences were observed between treatments in 1994, or between treatments for densities of other nematode species present (Meloidogyne incognita, Criconemella tescorum) or for total nematode density. In the lowland rice trial, no treatment effects on nematode species (Hirschmanniella oryzae and Uliginotylenchus palustris) were observed. In the P application trial on a P-deficient Ultisol, Heterodera sacchari densities were lower in treatments receiving 180 kg P ha−1, than untreated in 1995; in 1996 no differences were observed between untreated and 135 kg P ha−1, while in 1997 higher densities of H. sacchari were present in 135 kg P ha−1 than untreated. Regression analysis of nematode densities against the mineral straw content in the P application trial revealed a negative correlation between M. incognita and Mn and Ca, and between P. zeae and Zn or Fe. A positive correlation was observed between Helicotylenchus spp. and Mg. This study provides strong arguments for taking plant parasitic nematodes into account when planning and executing long-term research trials.