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Journal articles on the topic 'Côte de l''

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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Kouadio, Kouakou Parfait, N’goran Aphonse Yao, Basengere Rodrigue Ayagirwe, Gnenissongui Joseph Yéo, Yadé René Soro, and Agathe Fantodji. "Caractérisation des systèmes d’élevage de cobaye (Cavia porcellus L., 1875) dans trois zones agroécologiques de la Côte d’Ivoire." International Journal of Biological and Chemical Sciences 14, no. 2 (2020): 513–27. http://dx.doi.org/10.4314/ijbcs.v14i2.17.

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En Côte d’Ivoire, la pratique de l’élevage de cobaye est une activité marginalisée et méconnue des statistiques officielles des productions animales. Pour pallier ce déficit d’informations scientifiques et techniques, et promouvoir le développement de l’élevage de ce rongeur herbivore, une étude a été entreprise sur la caractérisation du système d’élevage du cobaye (Cavia porcellus, Linneaus, 1758) en Côte d’Ivoire. Une interview de 70 éleveurs sélectionnés dans les trois zones agroécologiques de la Côte d’Ivoire a été réalisée sur la base d’un questionnaire. Les résultats montrent que l’élevage de cobaye est pratiqué à majorité (70%) par les adolescents ayant un niveau de scolarisation d’étude primaire dont 73,33% sont de sexe masculin. L’aliment de base est à 80 % le fourrage récolté et il n'existe aucune prophylaxie sanitaire. Les cobayes élevés sont destinés à l’autoconsommation. Deux types d’élevage de cobaye ont été déterminés avec des techniques de conduite encore rudimentaires, correspondant ainsi à l’élevage familial traditionnel. Toutefois, cet élevage peut constituer un gage de sécurité alimentaire important pour les adolescents. Cependant, une sensibilisation efficiente pour son adoption et sa prise en compte dans les programmes de développement par tous les acteurs s’avèrent nécessaire.Mots clés : Cobaye, caractérisation, mini-élevage, système de production, Côte d’Ivoire. English Title: Characterization of cavy (Cavia porcellus L., 1875) breeding system in three agroecological zones of Côte d’Ivoire In Côte d'Ivoire, the practice of cavy breeding is a marginalized activity and little known by official statistics of animal production. To overcome this lack of scientific and technical information, and to promote development of cavy breeding, this study was undertaken on characterization of cavy breeding system (Cavia porcellus, Linneaus, 1758) in Côte d 'Ivoire. For interviewing, 70 cavy breeders selected from three agroecological zones of Côte d’Ivoire was carried out basis on questionnaire edited. Majority cavy breeder are adolescents (70%) with a level of primary school education, whom 73.33% are male. The staple food is 80% harvested fodder and no sanitary prophylaxis existing. Cavy is breeding for self-consumption for the holder. Two groups of cavy breeding have been determined with still rudimentary management techniques, thus corresponding to traditional family breeding animal. However, breeding cavy can constitute a pledge of important food security for youth. However, efficient awareness-raising for its adoption and its inclusion in development programs by all stakeholders is necessary.Keywords: Cavy, characterization, small stock, production system, Côte d’Ivoire.

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Akessé, Ettien Narcice, San-Whouly Mauricette Ouali N’goran, Yves Magloire Minhibo, Kouassi Misler Koffi, and Daouda Koné. "Efficacité d’une lutte mécanique associée au biopesticide Neco 50 EC dans le contrôle des adultes de Diastocera trifasciata (Coleoptera : Cerambycidae), ciseleur des branches d’anacardier en Côte d’Ivoire." International Journal of Biological and Chemical Sciences 14, no. 3 (2020): 1038–51. http://dx.doi.org/10.4314/ijbcs.v14i3.30.

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En Côte d’Ivoire, les vergers d’anacardiers du centre, centre-ouest et de l’est sont constamment attaqués par le Cerambycidae Diastocera trifasciata. Ces attaques, sans méthodes de contrôle efficaces s’amplifient au fil des années. Cette étude a été réalisée en vue d’évaluer d’une part l’efficacité d’une lutte mécanique contre les larves de D. trifasciata et d’autre part l’efficacité d’un biopesticide Neco 50 EC en comparaison avec un insecticide de synthèse Acétamipride 32 g/l + Lambdacyhalothrine 30 g/l. Les expérimentations ont été effectuées en mars 2017 et en septembre 2018 dans la localité de Brobo (centre de la Côte d’Ivoire). La lutte mécanique a consisté à retirer systématiquement toutes les branches infestées de larves de l’espèce et à les incinérer. Quant aux tests d’efficacité, 10 concentrations, à raison de 5 par produit ont été pulvérisées directement sur les adultes de D. trifasciata en conditions semi naturelles. Les résultats ont montré que la lutte mécanique a fait baisser le niveau des attaques de 100% à 35%. Concernant les insecticides, l’association Acétamipride 32 g/l + Lambdacyhalothrine 30 g/l a occasionné des taux de mortalité compris entre 70 et 100% à toutes les concentrations testées. Avec le biopesticide Neco 50 EC, des taux de mortalité supérieurs à 70% ont été enregistrés avec les concentrations de 3,3.10-4 g/ml et 2,5.10-4 g/ml en 24 h. Ces résultats ont permis de montrer l’efficacité de la lutte mécanique et des produits contre D. trifasciata. La méthode mécanique pourrait être vulgarisée pour permettre une bonne gestion préventive des attaques du ravageur dans les vergers d’anacardier. Quant à la lutte par l’insecticide biologique, des tests de confirmation devront être faits en plein champ pour mieux apprécier son efficacité.Mots clés : Analeptes trifasciata, attaques, Acétamipride, Lambdacyhalothrine, lutte intégrée, Côte d’Ivoire.  English Title: Efficacy of mechanical control associated with the biopesticide Neco 50 EC in the control of adults of Diastocera trifasciata (Coleoptera: Cerambycidae), a cashew tree branch girdler in Côte d'IvoireIn Côte d'Ivoire, cashew orchards in the central, western central and eastern parts of the country are constantly attacked by Cerambycidae Diastocera trifasciata. These attacks, without effective methods of control, have been increasing over the years. This study was carried out in order to evaluate on the one hand the efficacy of mechanical control of D. trifasciata larvae and on the other hand the efficacy of a biopesticide Neco 50 EC compared to a synthetic insecticide Acetamiprid 32 g/l + Lambdacyhalothrin 30 g/l. Experiments were carried out on March 2017 and to September 2018 in the locality of Brobo (central Côte d'Ivoire). Mechanical control consisted in systematically removing all branches infested with larvae of the species and incinerating them. As for efficacy tests, 10 concentrations, at a rate of 5 per product, were sprayed directly on adults of D. trifasciata under semi-natural conditions. Results showed that mechanical control reduced the level of attacks from 100% to 35%. The synthetic insecticide caused mortality rates between 70 and 100% at all concentrations tested. With biopesticide Neco 50 EC, mortality rates higher than 70% were recorded with concentrations of 3.3.10-4 g/ml and 2.5.10-4 g/ml after 24 h. These results demonstrated the effectiveness of mechanical control against D. trifasciata. The mechanical method could be extended to allow good preventive management of pest attacks in cashew orchards. As for control by biological insecticide, confirmatory tests will have to be carried out in the field to better assess its effectiveness.Keywords: Analeptes trifasciata, attacks, Acetamiprid, Lambdacyhalothrin, Integrated Pest Management, Côte d'Ivoire

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Gildas, Kouadio Assohoun Tigoli, Kabran Guy Roger Mida, Mamyrbekova-Bekro Janat Akhanovna, et al. "Alkaloids isolated from Crinum jagus L. bulb (Amaryllidaceae) from Côte d’Ivoire." Journal of Pharmacognosy and Phytochemistry 10, no. 2 (2021): 36–39. http://dx.doi.org/10.22271/phyto.2021.v10.i2a.13694.

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Nea, Fatimata, Evelyne Amenan Tanoh, Thierry Acafou Yapi, Gabriel Garcia, Felix Tomi, and Zanahi Félix Tonzibo. "Chemical Investigation on Leaf, Flower and Fruit Oils of Lantana camara from Côte d'Ivoire." Natural Product Communications 12, no. 4 (2017): 1934578X1701200. http://dx.doi.org/10.1177/1934578x1701200434.

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The compositions of essential oil obtained from leaves, flowers and fruits of Lantana camara L. growing in wild at Côte d'Ivoire, were investigated by GC and 13C NMR. Thirty-seven compounds accounting for 88.3-94.5% of the oils have been identified. The leaf, flower and fruits of L. camara produced sesquiterpene-rich essential oils predominated by ( E)-β-caryophyllene and α-humulene, in addition to the important content of sabinene, β-phellandrene and thymol as monoterpenes. It was found the new chemical profiles of L. camara.

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Jacob, Kouassi N’dri, Ayolié Koutoua, Koko Anauma Casimir, Boyé Mambe Auguste Denise, Seu Jonathan Gogbeu, and Tonessia Dolou Charlotte. "Agronomic and biochemical evaluation of some ecotypes of cowpea [Vigna unguiculata (L.) walp. (Fabaceae)]Collected in Côte d’Ivoire." Scholars Journal of Agriculture and Veterinary Sciences 3, no. 4 (2016): 292–97. http://dx.doi.org/10.21276/sjavs.2016.3.4.4.

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Souleymane Kaboré, Abdoulaye Touré, Bi Koffi François Prévost Kouamé, et al. "Phytochemical screening and antioxidant activity of leaves of Amaranthus hybridus L., Corchorus olitorius L and Hibiscus sabdariffa L. grown in northen of Côte d’Ivoire." GSC Biological and Pharmaceutical Sciences 16, no. 2 (2021): 182–89. http://dx.doi.org/10.30574/gscbps.2021.16.2.0227.

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Our work was based on the study of aqueous and hydroethanol extracts from the leaves of Amaranthus hybridus L. (Amaranthaceae), Corchorus olitorius L. (Tiliaceae) and Hibiscus sabdariffa L. (Malvaceae), and decoction. This work presents for the first time the phytochemical screening and the antioxidant activity of extracts of leaves of these three plants coming from the Côte d’Ivoire. Phytochemical analysis of these extracts revealed the presence of polyphenols and alkaloids in the three leaves. The total phenolic content of the extracts showed variations, between 13.22 and 90.89 mg GAE/g. The hydroethanol extract (90.89 mg GAE/g) and decoction of C. olitorius (57.89 mg GAE/g) had the most elevated contents. The evaluation of the reducing power with DPPH method revealed that the hydroethanol extract of C. olitorius was the most active (IC50 = 45.58 µg/mL). This result was in agreement with that obtained by FRAP method.

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Boireau, Patrick. "Les Lépidoptères associés à Boerhavia diffusa L. (Nyctaginaceae) en basse Côte d’Ivoire." Bulletin de la Société entomologique de France 126, no. 3 (2021): 345–50. http://dx.doi.org/10.32475/bsef_2197.

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Lepidoptera associated with Boerhavia diffusa L. (Nyctaginaceae) in lower Ivory Coast. Two eggs, seventy two caterpillars and six pupae collected mainly in Abidjan on Boerhavia diffusa L., a ruderal Nyctaginaceae, and reared, allowed to show that this plant favors the subsistance of at least seven species of Lepidoptera in an extremely urbanized environment: Megalorhipida leucodactyla (Fabricius, 1794) (Pterophoridae), Hippotion celerio (Linnaeus, 1758) (Sphingidae), Disclisioprocta natalata (Walker, 1862) (Geometridae), Alpenus maculosa Boisduval, 1836 (Erebidae), Maliattha sp., Spodoptera littoralis (Boisduval, 1833) and Aegocera rectilinea Boisduval, 1836 (Noctuidae). Disclisioprocta natalata is cited for the first time from Ivory Coast.

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Riadi, Hassane, Mohammed Kallaz, and Mohammed Ater. "Contribution à la connaissance des algues marines benthiques du Détroit de Gibraltar et de la Méditerranée occidentale marocaine .I. Chlorophyceae et Phaeophyceae." Acta Botanica Malacitana 25 (December 1, 2000): 5–20. http://dx.doi.org/10.24310/abm.v25i0.8469.

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L' étude floristique du Détroit de Gibraltar et de l'ouest de la côte méditerranéenne marocaine entreprise entre 1995 et 1998 a permis d'identifier 71 Chlorophyceae et 80 Phaeophyceae. Parmi les 151 espèces identifiées, 48 sont nouvelles pour la flore du Détroit de Gibraltar et 17 pour la flore du Maroc.

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Grootaert, Christiaan. "Structural change and poverty in Africa: A decomposition anakysis for Côte d'Ivoire." Journal of Development Economics 47, no. 2 (1995): 375–401. http://dx.doi.org/10.1016/0304-3878(95)00018-l.

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Prémont, Marie-Claude, and Marc-Urbain Proulx. "L' hydroélectricité du Québec et les grandes régions productrices." Revue Organisations & territoires 29, no. 1 (2020): 83–97. http://dx.doi.org/10.1522/revueot.v29n1.1128.

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La grande production hydroélectrique du Québec fait la fierté de la population et de ses élites. Trèslargement produite loin des territoires métropolitains de Montréal et de Québec, l’hydroélectricité des régions du Nord-du-Québec, de la Côte-Nord et du Saguenay–Lac-Saint-Jean laisse-t-elle, sur ces territoires, un bénéfice à la hauteur de sa contribution importante à la richesse du Québec? En d’autres termes, la répartition de la rente hydroélectrique, ou sa dissipation, bénéficie-t-elle aux grandes régions productrices, qui comprennent une large part de la ruralité du Québec? Les auteurs estiment que l’histoire du dernier siècle, et particulièrement des dernières décennies, démontre que les retombées locales se sont réduites comme une peau de chagrin.

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N’goran, San-Whouly Mauricette Ouali, Madeleine Adjoua Kouassi, and Adama Coulibaly. "Evaluation des dégâts des insectes ravageurs du chou pomme (Brassica oleracea var. capitata L.) à Korhogo, nord de la Côte d’Ivoire." International Journal of Biological and Chemical Sciences 15, no. 1 (2021): 106–16. http://dx.doi.org/10.4314/ijbcs.v15i1.10.

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Le chou fait partie des principales cultures maraîchères pratiquées en Côte d’Ivoire. Sa production est cependant limitée par des problèmes parasitaires entomologiques mal maîtrisés. Cette étude a été réalisée sur trois périmètres maraîchers du département de Korhogo, de juillet 2016 à juin 2017. Elle vise à évaluer les niveaux d’attaques des insectes ravageurs et à déterminer leur impact sur la culture. De façon spécifique, il s’est agi d’identifier les espèces d’insectes collectés sur les plants, de décrire leurs dégâts et de déterminer l’intensité de leurs attaques à travers un indice (I) compris entre 0% et 100%. Les observations ont révélé la présence dequinze espèces d’insectes. Les larves et/ou les adultes de ces insectes attaquaient les plants de chou. Les dégâts affectent les feuilles, le bourgeon apical, la pomme et la tige. Les espèces Hellula undalis et Plutella xylostella ont été identifiées comme les ravageurs majeurs du chou car elles ont attaqué respectivement 57,04% des plants avec une forte intensité (I = 38,89 ± 21,45%) et 88,15% des plants avec une très forte intensité (I = 56,11 ± 18,87%). La connaissance de ces ravageurs majeurs et de leurs dégâts pourrait contribuer à une meilleure gestion de ces nuisibles.Mots clés : Chou, intensité des attaques, Hellula undalis, Plutella xylostella, Côte d'Ivoire  Cabbage is one of the main vegetable crops grown in Côte d'Ivoire. However, its production is limited by the poor insect management. This study was carried out through three vegetable areas in the division of Korhogo from July 2016 to June 2017. It aims to assess the damage caused by insect and determine their impact on the crop. Specifically, it involved identifying the insect species collected from the plants, describing their damage and determining the intensity of their attacks using an index between 0% and 100%. Observations revealed fifteen insect species. The larvae and/or adults of these insects attacked cabbage plants. The damage affects the leaves, the apical bud, the apple and the stem. The species Hellula undalis and Plutella xylostella were identified as the major pests of cabbage because they attacked respectively 57.04% of the plants with high intensity (I = 38.89 ± 21.45%) and 88.15% of the plants with a very high intensity (I = 56.11 ± 18.87%). Knowledge of these major pests and their domages could contribute to better management of these pests. Keywords: Cabbage, intensity of attacks, Hellula undalis, Plutella xylostella, Côte d'Ivoire.

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Etienne, Douati, Konan Ysidor, Coulibaly Adama, Sidibe Daouda, and Biego Marius. "Nutritive Components in the Terminalia catappa L. (Combretaceae) Almonds Cultivated in Côte d'Ivoire." Journal of Applied Life Sciences International 12, no. 1 (2017): 1–10. http://dx.doi.org/10.9734/jalsi/2017/33032.

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Egesi, C. N., R. Asiedu, G. Ude, S. Ogunyemi, and J. K. Egunjobi. "AFLP marker diversity in water yam (Dioscorea alata L.)." Plant Genetic Resources 4, no. 3 (2006): 181–87. http://dx.doi.org/10.1079/pgr2006121.

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AbstractAmplified fragment length polymorphism (AFLP) markers were employed to assess intraspecific variability in water yam (Dioscorea alata L.). Fifty-three accessions of diverse geographic origins in West and Central Africa (Benin, Côte d'Ivoire, Ghana, Nigeria and Chad) and Puerto Rico were analysed using three AFLP primer combinations. Of the 342 amplification products generated, a mean of 53.4% were polymorphic. Genetic similarity coefficients ranged from 0.29 to 0.95. The accessions could be clustered into three major genetic groups with one outlier. Each group was a mixture of accessions of different geographical origin indicating that geography has not played a major role in the differentiation of the species. A few accessions clustered very tightly suggesting that there may be duplicate accessions in the collection. The wide genetic variation observed constitutes a good basis for genetic improvement of yam.

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Nazo Edith, Kpata-Konan, Konan Koffi Felix, Kouame Yao Francis, Gnagne Theophile, and Tano Kablan. "Characterization of Waste From Attiéké Factory: Case of Azito Village (Abidjan, Côte d’Ivoire)." European Scientific Journal, ESJ 12, no. 35 (2016): 73. http://dx.doi.org/10.19044/esj.2016.v12n35p73.

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The control of the anaerobic digestion of cassava residues from attiéké factories requires their characterization to offer a better working environment to attiéké producers. This study concerns at first the quantity of solid residues of cassava, dough of crushed cassava and other waste generated by the process of attiéké production. The second aspect concerns the determination of some physicochemical parameters (COD, TKN, pH, COD/TKN). These two aspects were realized thanks to the use of a bag in synthetic fibers, a dynamometric steelyard with dial of diameter 17 cms, and the use of a gradual can of capacity 20 L. The results of this study showed that an average quantity of 1.53 tonne of manioc handled (treated) generates 1.14 m3 of effluents and 0.16 tonne of solid waste per day. These effluents are acid with a pH ranged between 2.54 and 4.80. So they have on average a DCO of 58.79 g/L for 0,71 g/L of nitrogen. All these parameters help control the optimal conditions of anaerobic digestion of cassava effluents in the manufacturing process of attiéké.

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Jean-Gaël, Irié B. T., Wognin A. Valérie, Kando A. Marie-Laure, et al. "Analyse De L’évolution Saisonnière Des Matières Oxydables Dans Le Secteur Oriental De La Lagune Ebrié (Côte d’Ivoire)." European Scientific Journal, ESJ 14, no. 3 (2018): 221. http://dx.doi.org/10.19044/esj.2018.v14n3p221.

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Faced with the extension of the cities of Grand-Bassam and Abidjan along the Ebrié lagoon and the lack of data on the oxidizable content in the eastern sector of the Ebrié lagoon, this study was initiated. It aims to determine the levels of oxidizable materials in the eastern sector of the Ebrié lagoon. PH, temperature, salinity and dissolved oxygen were determined in situ at thirtyone (31) stations during the dry season and the rainy season. On these same stations, water samples were also taken per season to determine the content of oxidizable matter according to the methods in force. The statistical treatment consisted in knowing the links between the hydrological parameters. The average values of the parameters in the rainy season and in the dry season are 5,98 and 7,28 respectively for the pH, 27,59 °C and 29,6 °C for the temperature, 5,01 and 19,48 for salinity, 6.14 mg/L and 3.78 mg/L for dissolved oxygen, 0.24 mg/L and 0.38 mg/L for ammonium, 0.089 mg/L and 0.036 mg/L for nitrite, 8.18 mg/L and 0.23 mg/L for nitrate, 1.57 mg/L and 1.78 mg/L for orthophosphate, 76.06 mg/L and 56.81 mg/L for COD and 40.23 mg/L and 34.16 mg/L for BOD5. The evolution of oxidizable matter depends on the entry of continental, oceanic and precipitation waters into the lagoon. The high levels of oxidizable materials are observed in large part in the berries. Good positive correlations are observed between COD and DBO5 and between salinity and nitrite. Temperature and salinity have a good negative correlation. Lagoon waters receive more oxidizable materials in highly urbanized areas than in areas with little or no urbanization.

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Harrison, Nigel A., Robert E. Davis, Carlos Oropeza, et al. "‘Candidatus Phytoplasma palmicola’, associated with a lethal yellowing-type disease of coconut (Cocos nucifera L.) in Mozambique." International Journal of Systematic and Evolutionary Microbiology 64, Pt_6 (2014): 1890–99. http://dx.doi.org/10.1099/ijs.0.060053-0.

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In this study, the taxonomic position and group classification of the phytoplasma associated with a lethal yellowing-type disease (LYD) of coconut (Cocos nucifera L.) in Mozambique were addressed. Pairwise similarity values based on alignment of nearly full-length 16S rRNA gene sequences (1530 bp) revealed that the Mozambique coconut phytoplasma (LYDM) shared 100 % identity with a comparable sequence derived from a phytoplasma strain (LDN) responsible for Awka wilt disease of coconut in Nigeria, and shared 99.0–99.6 % identity with 16S rRNA gene sequences from strains associated with Cape St Paul wilt (CSPW) disease of coconut in Ghana and Côte d’Ivoire. Similarity scores further determined that the 16S rRNA gene of the LYDM phytoplasma shared <97.5 % sequence identity with all previously described members of ‘Candidatus Phytoplasma ’. The presence of unique regions in the 16S rRNA gene sequence distinguished the LYDM phytoplasma from all currently described members of ‘Candidatus Phytoplasma ’, justifying its recognition as the reference strain of a novel taxon, ‘Candidatus Phytoplasma palmicola’. Virtual RFLP profiles of the F2n/R2 portion (1251 bp) of the 16S rRNA gene and pattern similarity coefficients delineated coconut LYDM phytoplasma strains from Mozambique as novel members of established group 16SrXXII, subgroup A (16SrXXII-A). Similarity coefficients of 0.97 were obtained for comparisons between subgroup 16SrXXII-A strains and CSPW phytoplasmas from Ghana and Côte d’Ivoire. On this basis, the CSPW phytoplasma strains were designated members of a novel subgroup, 16SrXXII-B.

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Abrokwah, Francis, Henry Dzahini-Obiatey, Isaac Galyuon, Francis Osae-Awuku, and Emmanuelle Muller. "Geographical Distribution of Cacao swollen shoot virus Molecular Variability in Ghana." Plant Disease 100, no. 10 (2016): 2011–17. http://dx.doi.org/10.1094/pdis-01-16-0081-re.

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Cacao (Theobroma cacao L.) was introduced into West Africa from South America during the nineteenth century. However, cacao swollen shoot disease (CSSD) was first observed in Ghana in 1936 and, later, discovered in Nigeria, Côte d’Ivoire, Togo, and Sierra Leone. The objectives of this work were to assess the genetic diversity and spatial distribution of the Cacao swollen shoot virus (CSSV) in Ghana and investigate the origin and spread of the virus by identifying alternative host plants. Results obtained from polymerase chain reaction amplifications and phylogenetic relationship analyses of infected cacao and alternative host plants collected from the cacao-growing regions in Ghana revealed the existence of nine CSSV groups, A, B, C, E, G, J, K, L and M, with six groups detected for the first time in Ghana. The CSSV groups in Ghana are very divergent and correspond to at least five different putative species, according to the International Committee on Taxonomy of Viruses recommendations (A, B-C complex, G, E, and M), with the M species only being detected in the alternate host Ceiba pentandra. The spatial distribution of the different molecular groups in Togo, Côte d’Ivoire, and Ghana makes it difficult to predict a single origin for CSSV among the West African cacao-growing countries.

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Auguste, Albert J., Christine V. F. Carrington, Naomi L. Forrester, et al. "Characterization of a novel Negevirus and a novel Bunyavirus isolated from Culex (Culex) declarator mosquitoes in Trinidad." Journal of General Virology 95, no. 2 (2014): 481–85. http://dx.doi.org/10.1099/vir.0.058412-0.

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Pools of mosquitoes were tested for insect-specific viruses using cytopathic effect (CPE) assays on Aedes albopictus (C6/36) cells. Illumina sequencing of RNA from pool TR7094, which produced extensive CPE 2 days post-infection, yielded the complete genome sequences of a previously unknown Bunyavirus, designated Cumuto virus (CUMV), and a second virus designated Wallerfield virus (WALV). WALV shared highest amino acid identity (60.1 %) with Dezidougou virus from Côte d’Ivoire, a positive-sense, single-strand RNA, insect-specific virus belonging to the newly proposed genus Negevirus associated with mosquitoes and phlebotomine sandflies. The S, M and L segments of CUMV were most closely related to those of Gouleako virus, also from Côte d’Ivoire (amino acid identities of 36 %, 38 % and 54 % respectively). Neither virus produced CPE on vertebrate cells, or illness in newborn mice. Isolation and characterization of these viruses increase our knowledge of the geographical distribution, diversity and host range of mosquito-specific bunyaviruses and negeviruses.

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Eric Olivier Kouassi, Djaban, Konan Evrard Brice Dibi, Boni N’zué, Brice Sidoine Essis, Amani Michel Kouakou, and Mongomake Kone. "Agronomic Variability of the Sweet Potato Collection (Ipomoea batatas (L.) Lam.) from Côte d'Ivoire." International Journal of Sciences 9, no. 11 (2020): 1–12. http://dx.doi.org/10.18483/ijsci.2394.

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Yao, Marcelline, Brahima Camara, Mamadou Cherif, et al. "Effets du lit, de la densité de plantation et de la fertilisation sur la croissance végétative de l’ananas (Ananas comosus L., var. MD2) à différentes saisons de planting dans la zone de Bonoua en Côte d’Ivoire." International Journal of Biological and Chemical Sciences 14, no. 7 (2020): 2398–414. http://dx.doi.org/10.4314/ijbcs.v14i7.3.

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L’objectif de ce travail était de définir un itinéraire de culture favorable à la croissance des plants d’ananas MD2 en fonction des saisons de mise en culture dans la localité de Bonoua, au Sud - Est de la Côte d’Ivoire. Les effets de trois lits de plantation (terrain plat, billon sans un film polyéthylénique et billon recouvert avec un film polyéthylénique) ; de deux densités de plantation (50000 et 70000 plants/ha) ; de quatre types de fumure [F1 (Urée + Potasse) ; F2 (Urée + Potasse + Oligoéléments) ; F3 (Urée + Potasse + Engrais complet) et F4 (Urée + Potasse + Engrais complet + Oligoéléments)] et de deux fréquences d’application de fertilisants (3AP et 7AP) ont été testés. Au terme de la phase végétative du cycle, les comparaisons intersaisons des paramètres mesurés ont montré que quels que soient les traitements appliqués, le nombre de feuilles vivantes et la longueur de la feuille D les plus importants, ont été obtenus lorsque les plantings ont été réalisés à la grande saison pluvieuse. Les masses des feuilles D ont été supérieures au seuil de 70 g pour les plantings effectués pendant la petite et la grande saison pluvieuse, ainsi qu’à la grande saison sèche. La confection de billons a permis aux plants d’ananas MD2 d’avoir une bonne croissance végétative en saison sèche dans la localité de Bonoua.Mots clés : Ananas MD2, croissance, feuille D, saison, Fertilisant, Côte d’Ivoire. English Title: Effects of bedding, planting density and fertilization on the vegetative growth of pineapple (Ananas comosus L., var. MD2) at different planting seasons in the Bonoua zone in Côte d'Ivoire The objective of this work was to define a cultivation itinerary favorable to the growth of MD2 pineapple plants according to the growing seasons in the locality of Bonoua, in the South - East of Côte d'Ivoire. The effects of three planting beds (flat ground, ridge without a polyethylene film and ridge covered with a polyethylene film); two planting densities (50,000 and 70,000 seedlings/ha); four types of manuring [F1 (Urea + Potash)]; F2 (Urea + Potash + Trace elements); F3 (Urea + Potash + Complete fertilizer) and F4 (Urea + Potash + Complete fertilizer + Trace elements)] and two fertilizer application frequencies (3AP and 7AP) were tested. At the end ofthe vegetative phase of the cycle, inter-season comparisons of the measured parameters showed that, regardless of the treatments applied, the most important number of live leaves and leaf length D were obtained when the plantings were carried out during the long rainy season. The D-leaf masses were above the threshold of 70 g for plantings carried out during the short and long rainy seasons, as well as during the long dry season. The making of ridges allowed the MD2 pineapple plants to have a good vegetative growth during the dry season in the locality of Bonoua.Keywords: Pineapple MD2, growth, leaf D, season, Fertiliser, Côte d’Ivoire.

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Tialou, Oueuga Florence, Freddy Arnaud Yapi, Konan Kla, and Kama N’takpé Maxim Boraud. "Adventices majeures des parcelles industrielles de canne à sucre des unités agricoles intégrées en Côte d’Ivoire." International Journal of Biological and Chemical Sciences 15, no. 2 (2021): 594–608. http://dx.doi.org/10.4314/ijbcs.v15i2.17.

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Cette étude vise à identifier les adventices qui constituent la flore des plantations industrielles de canne à sucre des Unités Agricoles Intégrées de Côte d’Ivoire. Elle a permis d’établir la liste des adventices majeures et de montrer leur degré d’infestation dans les exploitations de canne à sucre. Pour mener à bien ce travail, la méthodologie a constitué à faire des placettes de 1500 m2 (30 m x 20 m). Dans ces placettes, chaque espèce rencontrée est évaluée par sa présence et son indice d’abondance-dominance. Les familles majoritaires sont celles des Poaceae, des Asteraceae, des Fabaceae, des Euphorbiaceae et des Cyperaceae. La plupart des espèces sont des Dicotylédones avec 69 %, dominé par les Thérophytes avec une proportion estimée à 29 %. Les espèces d’adventices les plus nuisibles à la culture de la canne à sucre sont : Lactuca taraxacifolia ; Passiflora foetida ; Ipomoea triloba ; Calopogonium mucunoides ; Cyperus rotundus L. ; Cucumis melo L. var. agrestis ; Desmodium scorpiurus ; Merremia peltata ; Mucuna pruriens ; Mondia whitei ; Tridax procumbens ; Rottboellia cochinchinensis ; Trianthema portulacastrum ; Desmodium tortuosum. La connaissance des adventices majeures dans la culture de canne à sucre est la première étape pour la mise en oeuvre d’un itinéraire technique efficace de gestion des bioagresseurs.Mots clés : Adventices, Canne à sucre, Unités Agricoles Intégrées. English Title: Major weeds of industrial sugar cane plots of integrated agricultural units in Côte d'Ivoire This study aimed at identifying the weeds that make up the flora of industrial sugar cane plantations of the Integrated Agricultural Units of Côte d'Ivoire. It has made to establish the list of major weeds and to show their level of infestation in sugar cane farms. To carry out this work, the methodology used was to make plots of 1500 m² (30 m x 20 m). In these plots, each species encountered was evaluated by its presence and its abundance-dominance index. The majority families are those of Poaceae, Asteraceae, Fabaceae, Euphorbiaceae and Cyperaceae. Most species are Dicotyledonous with 69% dominated by Therophytes (29%). The most harmful adventitious species for the cultivation of sugar cane are: Lactuca taraxacifolia; Passiflora foetida; Ipomoea triloba; Calopogonium mucunoides; Cyperus rotundus L.; Cucumis melo L. var. agrestis ; Desmodium scorpiurus ; Merremia peltata ; Mucuna pruriens ; Mondia whitei ; Tridax procumbens ; Rottboellia cochinchinensis ; Trianthema portulacastrum ; Desmodium tortuosum. The determination of major weeds in sugarcane cultivation is the preliminary stage of effective fight against biological constraints.Keywords : Weeds, sugarcane, Integrated Agricultural

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Konan, Ysidor N’guessan, Jean Louis Konan Konan, Rebecca Rachel Assa, et al. "Assessment of Sap Production Parameters From Spathes of Four Coconut (Cocos nucifera L.) Cultivars in Côte d’Ivoire." Sustainable Agriculture Research 2, no. 4 (2013): 87. http://dx.doi.org/10.5539/sar.v2n4p87.

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Several palm plants have social and economic roles worldwide by providing drinks from their sap. In Côte d’Ivoire, management of the coconut sap is not yet practiced. In this study, parameters related to production of sap have been assessed from four coconut cultivars namely PB 113+ and PB 121+ hybrids and WAT and MYD varieties. From all the unopened inflorescences (spathes) studied into the coconut crown, whose ranks varied from 7 to 9, that of rank 8 yielded the highest volume of sap. From this spathe, the PB113+ hybrid provided the best yield of sap (61.81 ± 20.41 l). Most important proportion of that sap volume was recorded at the morning harvesting. The sap production duration of a spathe varied from 24 ± 1.87 days (MYD) to 46.78 ± 1.86 days (PB 113+). That duration depended on the length of spathes and regular sap flow allowed by them. Furthermore, the PB 113+ had the highest number of fruits (NBF = 174.33 ± 78.45 fruits). The results showed that volume of sap available is closely related to the length of production (r = 0.78) and the cultivar’s nut yield (r = 0.82). The use of PB 113+ hybrid which provided highest quantity of sap is recommended for promoting the production of coconut sap in Côte d’Ivoire in order to improve the benefits derived from this plant.

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Annicet N’da, Hugues, Louise Akanvou, and Arsène Irié Bi Zoro. "Prospection, Collecte, Nomenclature Paysanne Et Caracterisation Des Variables Qualitatives Des Varietes Locales De Maïs (Zea Mays L.) Cultivees En Cote d’Ivoire." European Scientific Journal, ESJ 12, no. 24 (2016): 298. http://dx.doi.org/10.19044/esj.2016.v12n24p298.

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Ivoirian landraces of maize were maintained for several centuries in different ecological conditions, which allowed them to accumulate a large genetic diversity yet little studied. This study aims to make a first inventory of the existing diversity and establish a representative collection of the diversity of this crop in Côte d’Ivoire. Surveys and collection of maize landraces were conducted in three agro-ecological zones of Côte d'Ivoire. Two hundred and forty seven villages were selected and prospect in twentyfour regions. In each village, passport data were collected using the tools and methods of participatory research. A sample of 829 maize accessions were collected. The preliminary characterization of this collection was performed based on the descriptors of maize developed by Bioversity International. The study revealed a significant varietal diversity. Five varieties have been identified based on the color of the grains: yellow maize, white maize, red maize, purple maize and variegated maize. Varieties with yellow grain, with a percentage of 54.16% have been the most prevalent in different areas surveyed. Varieties with purple and red grain have been rare, with respective numbers of 3.38 and 3.62%. Interviews conducted with producers have permitted to inventory 81 local names. The main criteria of farmers to characterize local ecotypes was grains color. The collected accessions are an important gene pool for the present and future generations in the context of plant breeding work.

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Bahou, Laurent, Tidiani Koné, Valentin N'Douba, Kouassi J. N'Guessan, Essetchi P. Kouamélan, and Gooré B. Gouli. "Food composition and feeding habits of little tunny (Euthynnus alletteratus) in continental shelf waters of Côte d'Ivoire (West Africa)." ICES Journal of Marine Science 64, no. 5 (2007): 1044–52. http://dx.doi.org/10.1093/icesjms/fsm065.

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Abstract Bahou, L., Koné, T., N'Douba, V., N'Guessan, K. J., Kouamélan, E. P., and Gouli, G. B. 2007. Food composition and feeding habits of little tunny (Euthynnus alletteratus) in continental shelf waters of Côte d'Ivoire (West Africa). – ICES Journal of Marine Science, 64: 1044–1052. The stomach contents of 170 little tunny, Euthynnus alletteratus, sampled between June 2003 and December 2004 were examined. Fish size ranged from 27 to 81 cm fork length, and all fish were caught in gillnets deployed over the continental shelf off Côte d'Ivoire (West Africa). The type and quantity of prey ingested changed seasonally. Outside the major upwelling period the diet was more varied. Overall, fish were the dominant prey of all sizes of little tunny, far exceeding crustaceans, of which shrimps and prawns were commonest but were not found in the stomachs of juveniles (<42 cm FL) or larger adults (≥53 cm FL). Little tunny are carnivorous fish that feed opportunistically. A relationship was found between the size of the prey and the size of the predator.

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Pagny, Franck Placide Junior, Ouattara Mevanly, N’Gouan Emmanuel Joël Abrou, and Marie-Solange Tiébre. "Prediction of the potential invasion of Lantana Camara L. (Verbenaceae) an exotic plant species in Côte d'Ivoire from a modeling approach." International Journal of Biological and Chemical Sciences 14, no. 4 (2020): 1241–61. http://dx.doi.org/10.4314/ijbcs.v14i4.7.

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Invasive alien plant species represent a great threat to the integrity of ecosystems. Acquiring information on the dynamics of these species on a cartographic basis constitutes a tool for their sustainable management. Among these species, Lantana camara L., known for its environmental and agronomic impacts, is currently reported in several localities of Côte d'Ivoire. The general objective of this study is to model the ecological niche of this species over the entire country. To do so, 89 points occurrences and 19 current and future bioclimatic variables were collected to model the potential distribution of this species on the basis of the RCP 8.5 scenario as part of the HadGEM2-ES climate model. This is 75% of presence data (67 points) used for model calibration and 25% (22 points) for testing. At the end of the modeling carried out with the MaxEnt software, the areas suitable for the species are characterized by low temperatures and heavy rainfall., under current climatic conditions, approximately 65,782.40 km², or 20% of the national territory, is suitable for the invasion of L. camara. Azagny National Park, Banco National Park, and the Iles Nature Reserve Ehotiles have distributions with high probability of the presence of the species. By 2050, the climate projects high temperatures and low precipitation in the future. The results show that by adapting to this new climatic range, the L. camara proliferation area will increase to 78,036.05 km², or 24% of the national territory. An upward trend, with a rate of change of 18.6, has been observed in the favorable areas of this area. To maintain the normal functioning of ecosystems and the sustainability of ecosystem services, the areas that have been identified as the most vulnerable to the invasion of L. camara must be the subject of control strategies of this species. Keywords: Lantana camara, Species modeling, MaxEnt, Côte d’Ivoire, RCP scenario 8.5.

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Nea, Fatimata, Didjour Albert Kambiré, Manon Genva, et al. "Composition, Seasonal Variation, and Biological Activities of Lantana camara Essential Oils from Côte d’Ivoire." Molecules 25, no. 10 (2020): 2400. http://dx.doi.org/10.3390/molecules25102400.

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This work aims to study the variations in the composition of Lantana camara leaf, flower, and stem essential oils over two years. L. camara organs were harvested in Bregbo (East Côte d’Ivoire) each month from June 2015 to June 2017. The essential oils were obtained by hydrodistillation and characterized by GC-MS and 13C NMR. Eighty-four compounds accounting for 84.4–99.1% of the essential oils have been identified. The essential oils hydrodistillated from L. camara are dominated by sesquiterpenes such as (E)-β-caryophyllene and α-humulene, which were found in all samples. Some monoterpenes such as thymol, sabinene, and α-pinene were also present. Statistical analysis (principal component analysis and clustering) revealed a high variability in essential oil composition between the different organs and also within the studied periods, as the thymol proportion was higher during flowering and fruiting months. In addition, the stem, flower, and fruit essential oils were more concentrated in thymol than the leaf essential oils. The proportions of (E)-β-caryophyllene and α-humulene were strictly inverted with the thymol proportion throughout the harvest period or vegetative cycle. The antioxidant, anti-inflammatory and insecticidal activities of leaves and flowers essential oils were also studied. Results showed that L. camara leaf and flower essential oils displayed high antioxidant, anti-inflammatory and insecticidal activities.

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Kouakou, C. K., A. D. S.-H. Konan, A. A. N’Da Adopo, et al. "Agro-morphological characterization of cashew (Anacardium occidentale L.) ecotypes from North-Central of Côte d’Ivoire." Fruits 73, no. 5 (2018): 255–64. http://dx.doi.org/10.17660/th2018/73.5.1.

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Gyau, Amos, Kaitlyn Smoot, Christophe Kouame, Lucien Diby, Jane Kahia, and Daniel Ofori. "Farmer attitudes and intentions towards trees in cocoa (Theobroma cacao L.) farms in Côte d’Ivoire." Agroforestry Systems 88, no. 6 (2014): 1035–45. http://dx.doi.org/10.1007/s10457-014-9677-6.

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Kedi, Atolé Brice Bienvenu, Yao Francis Kouame, Seka Simplice Kouassi, Alika Odile Abry, and Koffi Félix Konan. "Physico-chemical characterization of liquid waste from sugar production unit labs in Zuenoula, Côte d'Ivoire." International Journal of Biological and Chemical Sciences 14, no. 7 (2020): 2641–51. http://dx.doi.org/10.4314/ijbcs.v14i7.22.

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Managing liquid waste from the laboratories of Integrated Agricultural Unit (IAU) of Zuénoula (Côte d´Ivoire) is a major concern for the decision-makers of the company, who are working to solve this problem in their sustainable development policy. This work aims at quantifying liquid waste from the agronomic laboratories and factory of IAU of Zuénoula and to assess their level of pollution. The quantities of waste produced daily are estimated at 28.5 L, 52.6 L and 2600 L respectively for waste from the agronomy laboratory, the factory laboratory and from the rinsing water from latter's glassware. The following parameters were analyzed, temperature, pH, conductivity, turbidity, total suspended solids, COD, BOD5, total nitrogen, total phosphorus, zinc, copper, lead and mercury. The results of these analyzes generally showed that waste produced did not comply with national standards. In particular, the level of lead was very high in these liquid wastes and reached 160 times the standard value. These results require a waste treatment system, which would reduce all the parameters, in particular those of the most noxious metals (lead and mercury).Keywords: Heavy metals, Pollution, Industrial unit, Ivorian standards, Wastewater.

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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 (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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Yves, Gnagne Agnes Essoh Jean Eudes, Yapo Ossey Bernard, Ohou-Yao Marie Jeanne, Ladji Meite, Ballet Tiama Guy Nicaise, and Mambo Veronique. "Trace Metals Content Of The Sewage From The Sewer Network Of Abidjan (Côte d’Ivoire)." European Scientific Journal, ESJ 12, no. 11 (2016): 412. http://dx.doi.org/10.19044/esj.2016.v12n11p412.

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Many studies have incriminated the effluents of the sewer network of Abidjan as major trace metal contamination sources in the Ebrié Lagoon. However, no data are available on wastewater regarding trace metal contaminations in Cote d’Ivoire. Thus, this study aimed at assessing the level of contamination of wastewater by metals copper, iron, cadmium, lead and Zinc. To achieve this objective, six campaigns were carried out from december 2013 to november 2014 in eight specific sites. The samples were analyzed using an atomic absorption spectrophotometer AA20 Varian, after mineralization. The results showed a significant contamination of effluents from the sewer network. The order of metals concentrations was Fe >Zn > Cu> Pb>Cd. Total metal concentrations (μg/L) ranged from 313.4 to 881.5 for Fe, 144 to 240 for Zn, 132 to 318 for Cu, 10 to 30 for Cd and 114.3 to 263 for Pb. Among these values only Cd concentrations considerably exceeded WHO guideline value (10 μg/L).

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Ouattara, Zana A., Nouho Sangaré, A. Janat Mamyrbekova-Bekro, et al. "Composition and Chemical Variability of Essential Oils Isolated from Aerial Parts of Cassytha filiformis from Côte d'Ivoire." Natural Product Communications 13, no. 2 (2018): 1934578X1801300. http://dx.doi.org/10.1177/1934578x1801300225.

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The essential oils isolated from aerial parts of Cassytha filiformis L. harvested in five locations of Côte d'Ivoire were analyzed by GC(RI), GC-MS and 13C-NMR. The oils were dominated by sesquiterpene derivatives and the content of the main components varied substantially from sample to sample: (E)-β-caryophyllene (1.5-34.9%), bicyclogermacrene (1.0-25.8%), α-humulene (0.5-22.0%), spathulenol (1.0-18.5%) and germacrene D (6.6-16.6%). Two compositions could be distinguished: (i) bicyclogermacrene, germacrene D, spathulenol (2/5 samples) and (ii), (E)-β-caryophyllene, α-humulene (3/5 samples).

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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 (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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Kouassi, Elisée Kporou, Sitapha Ouattara, Cendrine Seguin, Sylvie Fournel, and Benoit Frisch. "Etude De Quelques Proprietes Biologiques De Ocimum Gratissimum L., Une Lamiaceae Recoltee A Daloa (Côte d'Ivoire)." European Scientific Journal, ESJ 14, no. 3 (2018): 477. http://dx.doi.org/10.19044/esj.2018.v14n3p477.

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Introduction: Ocimum gratissimum is used in traditional Ivorian medicine for its multiple therapeutic virtues. Scope: Evaluate the biological properties of the essential oil of this plant. Methods: Antitumor activity was assessed using the MTS colorimetric assay on six (06) cell lines, the antifungal activity was evaluated by double dilution slant method on four (04) strains of clinical fungi, the potential antioxidant was determined by the DPPH test. Results: The strongest cytotoxic activity was obtained on Jurkat (T lymphoma) with an IC50 = 80 μg / ml. The best antifungal activity was observed on C. albicans with MIC and FMC values obtained at 12.5 μg / ml. Antioxidant activity was evaluated at F = 187 ± 1.57 mM Trolox / ml or (I = 38 ± 0.74%). Conclusion: The essential oil has interesting biological properties like as cytotoxic, antifungal and antioxidant

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Ysidor, Konan. "Glucide Factors of the Inflorescence Sap of Four Coconut (Cocos nucifera L.) Cultivars from Côte D’ivoire." International Journal of Biochemistry Research & Review 4, no. 2 (2014): 116–27. http://dx.doi.org/10.9734/ijbcrr/2014/7148.

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Joelle, Okoma, Konan Ysidor, Konan Jean-Louis, Assa Rachel, and Biego Marius. "Mineral Nutrients in Inflorescence Sap Produced from Various Coconuts (Cocos nucifera L.) Cultivated in Côte d’Ivoire." Journal of Experimental Agriculture International 16, no. 2 (2017): 1–9. http://dx.doi.org/10.9734/jeai/2017/32557.

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N'GUESSAN, Affoué Sylvie Rachelle, Koutouan AYOLIE, Sopie Edwige Salomé YAPO, et al. "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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Etienne, Douati, Konan Ysidor, Coulibaly Adama, Sidibe Daouda, and Biego Marius. "Assessement of Vitamins Contents of Almonds Deriving From Terminalia catappa L. (Combretaceae) Produced in Côte d'ivoire." Asian Journal of Advances in Agricultural Research 2, no. 3 (2017): 1–8. http://dx.doi.org/10.9734/ajaar/2017/35622.

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Hervé Kéassemon, KONE Cédessia, YAPI Arnaud-Freddy, and GUE Arsène. "Efficacité biologique des herbicides ACTION 80® et LUMAX® dans le contrôle des adventices dans les pépinières sèches de Tectona grandis à Sangoué en Côte d’Ivoire." Journal of Applied Biosciences 153 (September 30, 2020): 15756–63. http://dx.doi.org/10.35759/jabs.153.3.

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Objectif : Deux herbicides « Action 80® » de matière active le Diuron (3-(3,4-Dichlorophenyl)-1,1- Dimethylurea) à 80 % et « Lumax® SE » de formulation (125 g/L de Terbuthiron, 37,5 g/L de Mesotrione et 375 g/L de S-Métolachlore) ont été testés en vue d’évaluer l’efficacité biologique de chaque produit et sa dose minimale efficace sur le contrôle des adventices dans la culture du Teck. Méthodologie et résultats : Pour pallier le déficit en main d’œuvre et résoudre le problème des adventices difficiles à maîtriser en entretien manuel, une série d’essais herbicides a été initiée dans les pépinières sèches de Tectona grandis L. dans la forêt classée de la Sangoué. Plusieurs doses des herbicides Lumax® et Action 80® ont été testées en traitement de pré émergence des adventices. Conclusion et application des résultats : Ces herbicides ont montré une bonne efficacité, la persistance des traitements varie entre 4 et 6 mois. Par ailleurs, la dose minimale efficace est de l’ordre de 3 l/ha pour Lumax® et de 4 kg/ ha pour l’Action 80®. Mots clés : adventices, contrôle chimique, reboisement, Teck, pépinières sèches Biological efficacy of ACTION® and LUMAX® herbicides in weed control in dry nurseries of Tectona grandis in Sangoué, Côte d'Ivoire ABSTRACT Objective: Two herbicides, "Action 80®" with active ingredient Diuron (3- (3,4-Dichlorophenyl) -1,1- Dimethylurea) at 80% and “Lumax® SE” of formulation (125 g/L of Terbuthiron, 37,5 g/L of Mesotrione and 375 g/L of S-Metolachlor) have been tested to assess the biological efficacy of each product and its minimum effective dose for weed control in Teak cultivation. Methodology and results: To overcome the deficit of man power and resolve the weed problem difficult to control in manual maintenance, a series of herbicide trials was initiated in the dry nurseries of Tectona grandis L. in the classified forest of Sangoué. Several doses of the herbicides Lumax® and Action 80®were tested for weed pre-emergence treatment. Kone et al., J. Appl. Biosci. 2020 Efficacité biologique des herbicides ACTION 80® et LUMAX® dans le contrôle des adventices dans les pépinières sèches de Tectona grandis à Sangoué en Côte d’Ivoire 15757 Conclusion and application of results: These herbicides have shown good efficacy, the persistence of treatments varies between 4 and 6 months. In addition, the minimum effective dose is around 3 l / ha for Lumax® and 4 kg / ha for Action 80®. Key-words: Weeds, chemical control, reforestation, teak, dry nurseries.

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Fako, Kane, Djina Yves, Brou Koffi Siméon, and Gonnety Tia jean. "Biochemical composition and sensory characteristics of infusions of leaves from two morphotypes of Lippia multiflora (verbenaceae) grown in Côte d’Ivoire." Journal of Applied Biosciences 158 (February 28, 2021): 16332–39. http://dx.doi.org/10.35759/jabs.158.7.

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Objectives: this study aims to compare composition and sensorial characteristics of infusions of leaves from broad leave morphotype (blmLM) and long leave morphotype (llmLM) of Lippia multiflora (Savannah tea) cultivated in three localities, in order to identify the morphotype and/or locality, which offer the better biochemical composition and organoleptic qualities of tea. Methodology and results: Leaves harvested were dried and pulverized. Infusions were prepared using standard methods and sensorialy analysed by Mossion methods. Elements were determined according to AOAC methods. Phenolics compounds and caffeine was analysed by a standard method. Infusions of blmLM are rich in tannins (12.15-14.26 mg/L), quercetin (0.33-0.95 mg/L) and flavanone (05.75-13.33 mg/L), while those of llmLM are rich in caffeine (19.07-20.14 mg/L) and catechin (08.89-59.56 mg/L). Calcium (50.96- 51.54 mg/L) and magnesium (35.10-37.08 mg/L) contents are highest in infusions of BlmLM, while llmLM infusions are richer in K (97.78-103.46 mg/L) and Na (143.01-156.03 mg/L). Globally, infusions are brown to greenish yellow, astringent, slightly bitter with a pleasant smell. Infusions of Béoumi and Korhogo have a mint scent; those of Béoumi have a scent of lemongrass. Conclusion and Application of results: The qualities of infusions depend on the morphotype and the growing area. Their richness in phenolic compounds, caffeine and essential minerals gives them nutritional, medicinal and pharmacological properties and can be a replacement for ordinary teas sold on the market. This study provides information on the choice of the plant morphotype and the cultivation area according to the needs of the consumer. Consumption of infusions of leaves from Korhogo and Béoumi that are richer in tannins, catechin, quercetin and essential minerals (calcium, magnesium and iron) will be beneficial for human nutrition, bones strengthening and prevention of cardiovascular diseases which represent a public health problem. Taking Lippia multiflora into account in the agricultural and eating habits of farmers will constitute for them a source of income and also a source of permanent raw material for the agro-food processing industries. Keywords: Lippia multiflora, leaves infusion, biochemical composition, sensory characteristics

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Moussa, Diarra, Kouadio David Léonce, Aboua Kouassi Narcisse, et al. "Niveau De Contamination Du Poivron (Capsicum L., 1753) Par Les Pesticides." European Scientific Journal, ESJ 14, no. 6 (2018): 432. http://dx.doi.org/10.19044/esj.2018.v14n6p432.

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The study was done on two species of peppers capsicumannuum and capsicum fructescens. It concerned ninety samples of these two species, collected during three countrysides in two localities of Côte d’Ivoire (Bouake and Dabou). These samples were handled by means of a liquid-phase leading chromatograph SHIMADZU with the aim of determining the residues of pesticides. The observed results revealed a contamination of both species : capsicum annuum and capsicum fructescens, indeed, six residues of pesticides (chlorothalonil, chlorpyrifos, carbendazim, maneb, dimethoate and lambdacyaholothrine) were detected in these two species distributed in four families of pesticides (organochlorines, organophosphates, carbamates and pyrethrinoïds). The analysis showed that pyrethrinoïdes with respective proportions of 76,17% and 75,95% in capsicum annuum and capsicum fructescens were the most important ; followed organophosphate with respective proportions of 10,93% and 20,04% in capsicum annuum and capsicum fructescens.The study also showed that the concentrations of residues of pesticides detected in the edible part (pericarp ) peppers are appreciably equal those found in the part inedible(pulp). However, the residues of pesticides detected in peppers of both localities have all average concentrations lower than the standards established by the Codex Alimentarius.

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Rohner, Fabian, Andres B. Tschannen, Christine Northrop-Clewes, Valérie Kouassi-Gohou, Patrice E. Bosso, and C. G. Nicholas Mascie-Taylor. "Comparison of a possession score and a poverty index in predicting anaemia and undernutrition in pre-school children and women of reproductive age in rural and urban Côte d'Ivoire." Public Health Nutrition 15, no. 9 (2012): 1620–29. http://dx.doi.org/10.1017/s1368980012002819.

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AbstractObjectiveTo determine whether a possession score or a poverty index best predicts undernutrition and anaemia in women of reproductive age (15–49 years; WRA) and children aged 6–59 months living in Côte d'Ivoire.DesignAnthropometric measurements were converted to Z-scores to assess stunting, wasting and underweight in children, and converted to BMI in WRA. A venous blood sample was drawn, and Hb concentration and Plasmodium spp. infection were determined. A possession score was generated with categories of zero to four possessions. A five-point (quintile) poverty index using household assets was created using principal component analysis. These socio-economic measures were compared for their ability to predict anaemia and malnutrition.SettingData were from a nationally representative survey conducted in Côte d'Ivoire in 2007.SubjectsA sample of 768 WRA and 717 children aged 6–59 months was analysed.ResultsOverall, 74·9 % of children and 50·2 % of WRA were anaemic; 39·5 % of the children were stunted, 28·1 % underweight and 12·8 % wasted, while 7·4 % of WRA had BMI < 18·5 kg/m2. In general, there were more stunted and underweight children and thin WRA in rural areas. The poverty index showed a stronger relationship with nutritional status than the possession score; mean Hb difference between the poorest and wealthiest quintiles in children and WRA was 8·2 g/l and 6·5 g/l, respectively (13·9 % and 19·8 % difference in anaemia, respectively; P < 0·001), and Z-scores and BMI were significantly better in the wealthiest quintile (P < 0·001).ConclusionsThe poverty index was generally a better predictor of undernutrition in WRA and pre-school children than the possession score.

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Faustine, Kouassi Akossoua, Tra Bi boli Francis, and Koffi Kouao Jean. "Etude Socio-Économique De L’exploitation Des Plantes Fourragères Dans Le District d’Abidjan (Côte d’Ivoire)." European Scientific Journal, ESJ 12, no. 34 (2016): 357. http://dx.doi.org/10.19044/esj.2016.v12n34p357.

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Forage trading in the city of Abidjan is an activity not known by the population. The objective of the study was to determine the importance of the collection of forage plants in the socio-economic life of the actors of the sector. Prospects and semi-structured interviews were conducted, and we determined the floristic composition of forages sold in the market. The results of the survey show that the forage sold by the farmers is taken free of charge in the city of Abidjan. The unit price (UP) of a bundle of forage is on an average of 50 FCFA when there are few animals on the market, and 100 FCFA or 200 FCFA in case of high affluence such as during holidays. Thus, the estimated average financial income per day of an operator during periods of low affluence of animals in the markets is 875 F CFA. On an average, it is 26250 FCFA per month and 3350 FCFA per day. Also, there is an estimated average of 100 400 FCFA in periods of abundance of animals for sale in the market. The results of investigations showed that forages species sold are composed of species such as Chloris pilosa Schumach. (Poaceae), Panicum maximum Jacq (Poaceae), Brachiaria lata (Schumach.) Hub (Poaceae), Arachis hypogea L. (Fabaceae), and Phaseolus vulgaris L (Fabaceae). In addition to being food reserves, these activities provide work for those who exploit them. It allows them to meet their daily needs and also compensate for the lack of jobs.

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Rialland, Annie, Yranahan Traore та Caroline Féry. "Nominal tonology and spreading rules in Tagbana (Fròʔò dialect)". Studies in African Linguistics 50, № 2 (2021): 167–95. http://dx.doi.org/10.32473/sal.v50i2.117236.

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In this article, nominal tonology of Tagbana, a Senufo language of Côte d’Ivoire is investigated. The contribution of this article is twofold as it concerns the whole tonal system, including lexical tones, sandhi tone rules, and the organisation of the prosodic hierarchy. It is shown that Tagbana has three level tones (L, M, H) and two floating tones (H) and (L). A mid tone (M) at the end of a noun is always followed by a floating tone (either H or L), which might be a historic trace left by the tone of a Class Marker. Two clusters of sandhi tonal rules are shown to play a role, called ‘Mid Replacement rules’ (RepM) and ‘Spreading rules on H & L’ (SprH&L). The domains of the sandhi tonal rules are studied in some detail, from the Minimal Prosodic Word (root + class marker), the Intermediate and Maximal Prosodic Words (nominal and adjectival compounds), the Prosodic Phrases (particularly in object + verb constructions), to the Intonational Phrase. Considering the prosodic levels above the Minimal Prosodic Word, more tonal sandhi processes are found to apply in smaller prosodic domains than in larger ones.

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Yao, Denis, Kouakou Kouassi, Daniela Erba, Francesca Scazzina, Nicoletta Pellegrini, and Maria Casiraghi. "Nutritive Evaluation of the Bambara Groundnut Ci12 Landrace [Vigna subterranea (L.) Verdc. (Fabaceae)] Produced in Côte d’Ivoire." International Journal of Molecular Sciences 16, no. 9 (2015): 21428–41. http://dx.doi.org/10.3390/ijms160921428.

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Zro, Ferdinand, Jacob Kouassi, Damien Abobi, Valère Kotchi, and Konan Essy. "Effects of Planting Density and Manure on Maize (Zea mays L.) Agronomic Parameters in Bouaké, Côte d’ivoire." Journal of Agriculture and Ecology Research International 14, no. 4 (2018): 1–9. http://dx.doi.org/10.9734/jaeri/2018/40651.

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Kouakou, NDV, CEM Angbo-Kouakou, NE Assidjo, and JF Grongnet. "Stratégies incitatives à la pratique de l'élevage des cobayes (Cavia porcellus L.) en Côte d’Ivoire." International Journal of Biological and Chemical Sciences 9, no. 2 (2015): 664. http://dx.doi.org/10.4314/ijbcs.v9i2.8.

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Koffi, K. E., and N. Diarrassouba. "SOCIO-ECONOMIC VALUES OF TAMARIND (TAMARINDUS INDICA L.) AND NEREID (PARKIA BIGLOBOSA BENTH) RESOURCES IN CÔTE D'IVOIRE." Acta Horticulturae, no. 806 (January 2009): 533–38. http://dx.doi.org/10.17660/actahortic.2009.806.67.

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Komenan-Ani, AS, KK Koffi, KL Kouakou, K. Kouassi, and BIA Zoro. "Agronomic Performance of Cultivars of Vignasubterranea (L.) from Côte d’Ivoire and Burkina Faso Cultivated under different Environments." Greener Journal of Agricultural Sciences 6, no. 6 (2016): 186–94. http://dx.doi.org/10.15580/gjas.2016.6.042916081.

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Kouakou, T., BK Abou, NA Oulo, GB Sery, D. Monique, and L. Lucien. "Isolation and culture of protoplasts of Côte d'Ivoire’s pearl millet (Pennisetum glaucum (L) R) varieties." Journal of Applied Biosciences 92, no. 1 (2015): 8620. http://dx.doi.org/10.4314/jab.v92i1.6.

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