scholarly journals Efficiences Des Nutriments P Et K En Riziculture Irriguée Dans Un Bas-Fond Secondaire En Zone De Savane Guinéenne De La Côte d’Ivoire

2017 ◽  
Vol 13 (36) ◽  
pp. 432
Author(s):  
Fulgence E. Akassimadou ◽  
Marie P. Hien ◽  
Felix B. Bouadou Oi ◽  
Emile B. Bolou Bi ◽  
Jeanne A. Bongoua ◽  
...  
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Rice Variety ◽  
Fertilizer Efficiency ◽  
Forest Zone ◽  
Cote D’Ivoire ◽  
Humid Forest ◽  
Inappropriate Use ◽  
Côte D'ivoire ◽  
Set Up

N-nitrogen is the most limiting element in rice-growing on lowland soils in the central part of Côte d'Ivoire. In addition to its direct effect, poor management of P and K fertilizers in basic manure can induce low yields and losses of currencies. However, inappropriate use of these nutrients (P and K) in these shallows can induce other adverse effects on crops and even on the environment. So, for the eficient management of lowland ricegrowing fertiliszation, three agronomic trials have been set up in the Central part of Côte d'Ivoire to determine the optimum P and K doses to improve fertilizer efficiency in the relevant agroecology. Three rates of PCa(H2PO4)2H2O [30, 60 and 90 kgPha-1 ] as well as three of K-KCl [25, 50 and 75kgKha-1 ] and their recommended rates (13kgPha-1 and 25kgKha-1 ) in the humid forest zone were the treatments. A total of 80kgNha-1 (urea) was applied in three splits to each of the micro-plots except in the control including no fertilizer. The rice variety named NERICA L19 was transplanted.An agronomic trial including eleven (11) treatments in three replications was laid out in a complete randomized blocks design The highest K recovery rate is obtained with the 25kgKha -1 rates, while the lowest rate is with 50kgKha-1 in the three trials. There is a gradual decrease in P-level recovery as rates increase, regardless of the test. Increased rates of P and K induce a decrease in agronomic efficiency. The partial productivity factor (PFP) of nutrients P and K decreases with increasing rates for all three trials. The highest grains and straw yields are obtained for 75kgKha-1 doses regardless of the dose of P. However, it should be noted that the different efficiencies obtained are better for the lower rates of P and K

scholarly journals DYNAMICS OF FRUIT FLIES POPULATIONS IN TWO MANGO PRODUCTION ZONES (KORHOGO AND FERKÉ) IN NORTHERN CÔTE D’IVOIRE

2019 ◽  
Vol 7 (7) ◽  
pp. 256-264
Author(s):  
Minhibo Magloire Yves ◽  
Akpesse Akpa Alexandre Moïse ◽  
Coulibaly Tenon ◽  
Koua K Hervé ◽  
Coulibaly Adama
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Diversity Indices ◽  
Fruit Flies ◽  
Shannon Index ◽  
Bactrocera Dorsalis ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Set Up ◽  
Study Sites

Fruit flies are a major constraint to the production and export of mangoes by causing the rot of mangoes. The objective of this work is to follow the fluctuation of population of flies in the northern part of Côte d'Ivoire between May 2015 and October 2016. A network of trapping flies using food baits (the Torula and Ceratrap) and sexual attractants (Methyl Eugenol and Trimedlure) were set up in Korhogo and Ferké mango orchards with the forest Diabaté Kamonon and the forest Petit Clerc as reference area. During trapping, 11 species of fruit flies were identified at all study sites. Among these species, Bactrocera dorsalis and Ceratitis cosyra, were the most abundant in the area. In general, diversity indices were low. The Ferké’s Forest has the highest Shannon index (H = 1.20). This index was higher than the index found in Ferke's orchards (0.9398). At Korhogo the Shannon index in orchards (H = 0.84) is higher than in the forest (H = 0.41). It has been observed that the genus Bactrocera swarmed on mango orchards when precipitation was plentiful. While the genus Cerartitis only appeared when precipitation was low. In addition, knowledge of the ecology and fluctuation of fruit flies, will allow to develop a site monitoring device through a trapping system with sexual and food attractants.

Ivermectin in onchocerciasis control in the forest zone of Cote d'Ivoire

Acta Tropica ◽  
1997 ◽  
Vol 68 (3) ◽  
pp. 297-300 ◽  
Author(s):  
Traoré Soungalo ◽  
Diarrassouba Soumana ◽  
Sow Moussa ◽  
Riviere François
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Forest Zone ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Onchocerciasis Control

scholarly journals Signature Geochimique des Granitoides de la Branche Est du Sillon de Boundiali-Korhogo (Nord de la Cote D’ivoire)

2021 ◽  
Vol 17 (34) ◽  
pp. 223
Author(s):  
Fofana Krohognon ◽  
Allialy Marc Ephrem ◽  
Coulibaly Inza ◽  
Teha Koffi Raoul
Keyword(s):  
Cote D'ivoire ◽  
Greenstone Belt ◽  
Côte D’Ivoire ◽  
Major And Trace Elements ◽  
Primitive Mantle ◽  
Type I ◽  
Cote D’Ivoire ◽  
The North ◽  
Côte D'ivoire ◽  
Set Up

Cet article résume les données relatives à la pétrographie et aux compositions en éléments majeurs et en traces des granitoïdes du sillon de Korhogo. Le sillon de Korhogo est situé au Nord de la Côte d’Ivoire, dans le domaine birimien. Ce sillon qui constitue la branche Est du sillon de Boundiali-Korhogo est à cheval sur les régions du Poro et du Tchologo. La méthodologie employée a permis à l’issue des observations macroscopiques, de recueillir des échantillons pour les études microscopiques et géochimiques. Les études pétrographiques indiquent que les granitoïdes du sillon de Korhogo sont des granodiorites et granites. Ces granitoïdes ont été affectés par une intense altération pervasive et fissurale témoignant ainsi de l’intensité de l’altération hydrothermale dans le sillon de Korhogo. Ces roches ont été affectées par un le métamorphisme de faciès schiste vert. Les données géochimiques montrent que les granitoïdes sont calco-alcalins, potassiques, métalumineux à peralumineux et de Type « I ». Ces roches sont enrichies en LREE [Granodiorite ((La/Sm)N = 3,36 – 4,45 ; (Gd/Yb)N = 1,56 – 2,51 ; et (La/Yb)N = 7,29 – 20,92) ; Granite ((La/Sm)N = 4,51 - 4,69 ; (Gd/Yb)N = 1,00– 3,13 et (La/Yb)N = 7,63 - 26,53] et présentent des anomalies négatives à quasiment nulles en cérium [Granite (Ce/Ce*= 0,60 -0,92) ; Granodiorite (Ce/Ce* = 0,80 -1,01)]. Les anomalies en europium varient des granodiorites [(Eu/Eu* = 0,81 – 1,53)] aux granites [(Eu/Eu*= 0,90 - 1,11)]. Ces granitoïdes ont de faibles taux de TiO2 (<2 %). Les arachnogrammes des éléments en trace normalisés au manteau primitif sont généralement enrichis en LILE (Cs, Ba, Rb, K) associés à une anomalie négative en Nb-Ta. Les tendances géochimiques indiquent que les granitoïdes du sillon de Korhogo proviendraient d’un mélange crustal et mantellique et se seraient mis en place dans un contexte de subduction. This paper summarizes the data available on petrography and the concentrations of major and trace elements in granitoids from Korhogo greenstone belt province. The Korhogo greenstone belt is localed in the north of Côte d’Ivoire, in the birimian domain. This belt which constitutes the eastern branch of the Boundiali-Korhogo greenstone belt straddles the Poro and Tchologo areas. The methodology started by the macroscopic to microscopic observations then it continued to the geochemical studies. Petrographic studies indicate that the granitoids of Korhogo greenstone belt are granodiorites and granites. These granitoids were affected by intense pervasive and fissural alteration thus testifying the intensity of hydrothermal alteration in the Korhogo greenstone belt. These rocks were affected by regional greenschist facies. Geochemical datas show that the granitoids are calc-alkaline, potassic, metaluminous to peraluminous and “I” Type. These rocks are enriched in LREE [Granodiorite (La/Sm)N = 3,36 – 4,45 ; (Gd/Yb)N = 1,56 – 2,51 ; et (La/Yb)N = 7,29 – 20,92) ; Granite (La/Sm)N = 4,51 - 4,69 ; (Gd/Yb)N = 1,00 – 3,13 et (La/Yb)N = 7,63 - 26,53] and present negative to non-exixting cerium anomalies [Granite (Ce / Ce * = 0.60 -0.92); Granodiorite (Ce/Ce * = 0.80 -1.01)]. The europium anomalies vary from granodiorites [(Eu/Eu * = 0.81 - 1.53)] to granites [(Eu/ Eu * = 0.90 - 1.11)]. These granitoids have low levels of TiO2 (<2%). Primitive mantle normalized, trace element patterns show that granitoids have geochemical patterns characterized by enrichment in LILE (Cs, Ba, Rb, K) associated with negative Nb –Ta anomalies. Geochemical trends indicate that the granitoids of Korhogo greenstone belt originate from a crustal and mantle mixture and were set up in a context of subduction.

scholarly journals Impact of Endomycorrhization on the Nursery Growth of Seedlings of a Threatened Ivorian Forest Species Pterygota macrocarpa K. Schum (Malvaceae)

2021 ◽  
pp. 75-86
Author(s):  
Voko Bi Rosin Don Rodrigue ◽  
Konan Adjoua Estelle ◽  
Kouassi Kouassi Clément ◽  
Kocoun Konan Dieudonné ◽  
Konaté Ibrahim
Keyword(s):  
Cote D'ivoire ◽  
Arbuscular Mycorrhizae ◽  
Côte D’Ivoire ◽  
Growth Parameters ◽  
Common Species ◽  
Protective Measures ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Set Up ◽  
The Impact

Aims: Pterygota macrocarpa, a common species in the forests of Côte d'Ivoire, is threatened with extinction due to overexploitation. Protective measures for P. macrocarpa could consist in the integration of arbuscular mycorrhizae in the reforestation of this species. The objective of this study was to evaluate the impact of arbuscular mycorrhizae inoculation on the resistance and development of P. macrocarpa plants. Study Design: The design is completely randomized and includes one (1) plant species (Pterygota macrocarpa), three (3) treatments (local inoculum 1, commercial inoculum 2 and non-inoculated control) and 20 seedlings per treatment. Place and Duration of Study: The experimental study was set up at the border of the experimental forest of the Northern site of INP-HB (National Polytechnic Institute Houphouët-Boigny, Yamoussoukro, Côte d’Ivoire) from February to May 2018. Methodology: Thus, from seedlings collected in the arboriculture of the INP-HB of Yamoussokro, the effects of mycorrhization through treatments on the mineral nutrition and on the growth parameters of P. macrocarpa were evaluated during 120 days of culture in nursery. Results: The mycorrhised plants survived 100% while the control plants had 90% survival rate. The mycorrhizal intensity of the roots was 19.21% for inoculum 1 and 10.40% for inoculum 2. The plants treated with inoculum 1 had the highest mineral content, especially phosphorus (0.3 ppm) and nitrogen (2.6%). The vegetative growth of inoculum 1 treated plants was more accelerated than that of the other two treatments. Local inoculum 1 was more effective than commercial inoculum 2. Conclusion: The integration of local mycorrhizal inocula in the reforestation of P. macrocarpa seedlings could be a sustainable solution for the restoration of degraded forests.

scholarly journals Restoration of the potentialities of a degraded ferralsol using cocoa bean teguments in Ahoue (South East, Côte d’ivoire)

2018 ◽  
Vol 7 (6) ◽  
pp. 120-130
Author(s):  
Kouadio Koffi Patrice ◽  
Bongoua-Devisme Affi Jeanne ◽  
Yoboué Kouadio Emile ◽  
Touré Nantarie ◽  
Beugré Christian Moise ◽  
...  
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Block Design ◽  
Chemical Properties ◽  
Cocoa Bean ◽  
Cote D’Ivoire ◽  
Environmental Preservation ◽  
Côte D'ivoire ◽  
Experimental Block ◽  
Set Up

This study consists of using the cocoa bean teguments as a means of sustainable production growth and environmental preservation. It aims to characterize the effects of the teguments on the chemical properties of a Ferralsol in Ahoué (Côte d'Ivoire). In an experimental block design of Fisher, three treatments of Cocoa bean teguments: T1 (10 t.ha-1), T2 (15 t.ha-1), T3 (20 t.ha-1) and one Control T0 have been set up with four repetitions. The main results show that the contribution of cocoa bean teguments has a positive effect on all the characteristics studied. The values obtained of the pH of the T0 and the T1, T2, T3 indicates, respectively 4.2; 5.4; 5.5 and 5.8. As regards the contents of the CEC, the values obtained give: 2.32; 7.2; 11.44 and 12.5 cmol.kg-1, respectively, for T0, T1, T2 and T3 treatments. As for the organic matter, the contents obtained indicate the following values: T0 = 12.56 g.kg-1; T1 = 26.49 g.kg-1; T2 = 35.09 g.kg-1 and T3 = 38.08 g.kg-1. The data corresponding to the sum of the captions oscillated between 4.5 and 10.5 cmol.kg-1 according to the treatments.

Liberia

1990 ◽  
Vol 30 (S1) ◽  
pp. 20-22
Keyword(s):  
Sierra Leone ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Cote D’Ivoire ◽  
The North ◽  
Côte D'ivoire ◽  
Set Up

The conflict that broke out in Nimba county, in the north, late in December 1989 slowly spread to the capital during the first half of 1990, leading a growing number of refugees to flee the country. In January, the ICRC set up a delegation in Monrovia to provide assistance within Liberia. The institution also quickly established tracing offices for Liberian refugees in neighbouring Cȏte d'Ivoire and Guinea, and later set up another tracing office in Sierra Leone. The ICRC's regional delegations also provided assistance to the National Societies of the neighbouring countries as they dealt with the influx of refugees.

scholarly journals De la Degradation de l’habitat Social Comme Consequence de sa Politique d’entretien par les Syndics a Abidjan : Cas des Coproprietes Sogefiha d’Abobo et Sicogi d’Adjame

2021 ◽  
Vol 17 (23) ◽  
pp. 177
Author(s):  
Adoua Affoua Krah Elisabeth
Keyword(s):  
Cote D'ivoire ◽  
Financial Management ◽  
Urban Policy ◽  
Urban Governance ◽  
Côte D’Ivoire ◽  
Property Management ◽  
Maintenance Policy ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Set Up

Entre 1960 et 1980, la Côte d’Ivoire met sur pied sa politique urbaine grâce à laquelle sont nées les copropriétés SICOGI (Société Ivoirienne de Construction et de Gestion Immobilière) et SOGEFIHA (Société de Gestion Financière de l’Habitat). A partir de 1986, ces 02 structures se retirent de la gestion des copropriétés, désormais confiée aux habitants eux-mêmes à travers l’installation des syndics. Mais aujourd’hui, l’on constate que ces espaces se trouvent dans un état de « dégradation » dû au manque d’entretien dont ils sont sujets. Cet article a pour objectif d’étudier la politique d’entretien des syndics à l’origine de la dégradation des espaces en copropriétés SOGEFIHA d’Abobo et SICOGI d’Adjamé 220 Logements. La recherche documentaire, l’observation directe ainsi que l’entretien ont été utilisés pour recueillir les données sans omettre la mobilisation de la gouvernance urbaine comme théorie de l’étude. Les résultats font ressortir que la dégradation est une conséquence des stratégies d’entretien ainsi que du manque de connaissance des syndics. Between 1960 and 1980, Côte d’Ivoire set up its urban policy, in which the SICOGI (Ivorian construction and property management company) and SOGEFIHA (Society of financial management of habitat) condominiums were born. From 1986, these 02 structures withdrew from the management of condominiums, now entrusted to the inhabitants themselves through the installation of trustees. But today, we see that these spaces are in a state of “degradation” due to the lack of maintenance to which they are subject. The objective of this article is to study the maintenance policy of trustees at the origin of the degradation of the SOGEFIHA condominium spaces of Abobo and SICOGI 220 Housing units of Adjamé. Documentary research, direct observation as well as interview were used to collect the data without omitting the mobilization of urban governance as theory of the study. The results show that the deterioration is a consequence of maintenance as well as the lack of knowledge of the trustees.

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