scholarly journals Participatory selection of orange-fleshed sweetpotato varieties in north and north-east Côte d’Ivoire

2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Konan Evrard Brice Dibi ◽  
Brice Sidoine Essis ◽  
Boni N’zué ◽  
Amani Michel Kouakou ◽  
Goli Pierre Zohouri ◽  
...  
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Block Design ◽  
Consumer Preference ◽  
Dry Matter Content ◽  
Cote D’Ivoire ◽  
North East ◽  
Côte D'ivoire ◽  
First Choice ◽  
On Farm

AbstractSweetpotato is cultivated in all the regions of Côte d’Ivoire for consumption and as a source of income. Only varieties with white or yellow flesh are grown. Production of nutritious orange-fleshed sweetpotato (OFSP) is hampered by the lack of genetic resources and planting material. To evaluate and release OFSP varieties, on-farm demonstration tests were conducted with women farmer groups in Bondoukou, Nassian, Korhogo and Bondiali in the north and northeast Côte d’Ivoire. Six varieties- ‘Kabode’, ‘Kakamega7’ (‘Irene’), ‘Tacha’, ‘Bela Bela’, ‘Vita’ and TIB-440060-were evaluated in comparison with locally grown varieties. The on-farm demonstration was laid out in a randomised complete block design with replicated three times per location. Assessments were made on yield, disease and pests; and consumer preference on attractiveness of skin color and flesh of the root (fresh and boiled), taste, texture and starchiness. Results showed that introduced varieties have generally recorded higher yields than the local varieties: Yields of about 25 t/ha have been recorded on the sites. The best average yield of about 15 t/ha, was recorded for TIB-440060 and ‘Irene’ varieties. Farmers’ acceptance of OFSP varieties based on the attraction of their color, the dry matter content and taste was more than 90%. At the end of the sensory tests, ‘Irene’, which achieved the best compromise between all observed and measured parameters, was most appreciated and was the farmers’ first choice, followed by varieties TIB-440060 and ‘Bela bela’.

scholarly journals On-farm characterization and evaluation of dairy cattle crossbreeds in Côte d’Ivoire

2010 ◽  
Vol 1 (2) ◽  
pp. 398-399
Author(s):  
Edouard K. N’Goran ◽  
Valentine C. Yapi Gnaore ◽  
Agathe T. Fantodji
Keyword(s):  
Dairy Cattle ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
On Farm

scholarly journals Browning Prevention and Sensory Evaluation of Frozen Yam Slices (Dioscorea cayenensis-rotundata Cv Kponan) of Côte D’Ivoire

2019 ◽  
pp. 1-10
Author(s):  
Aïssatou Coulibaly ◽  
Kouadio Claver Degbeu ◽  
Abo Paul Marcelin Bekoin ◽  
Yapi Elisée Kouakoua ◽  
Kingsley Kwadwo Asare Pereko ◽  
...  
Keyword(s):  
Cote D'ivoire ◽  
Dry Matter ◽  
Côte D’Ivoire ◽  
Specific Activity ◽  
Lemon Juice ◽  
Sensory Profile ◽  
Dry Matter Content ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Dioscorea Cayenensis

Aim: To prevent enzymatic browning during the freezing of yam slices of the Kponan variety (Dioscorea cayenensis-rotundata). Study Design: The experimental set-up was of a completely randomized design. Place and Duration of Study: Department of Food Science and Technology, Food Biochemistry and Tropical Products Technology Laboratory (BATPTL), University of Nangui Abrogoua, Abidjan, Côte d’Ivoire, between August and December 2018. Methodology: For this purpose, yam slices were either pretreated with a natural agent (lemon juice solution at different pH) or pretreated and blanched (85 °C for 2 min) and then packed in plastic bags and kept in the freezer at -18°C over a period of 4 weeks. Polyphenoloxidase and Peroxidase activities, Dry matter, rate of browning and sensory attributes of yam slices were determined. Results: The results showed a decrease in polyphenoloxidase and peroxidase activities regardless of the treatment. The largest decreases in activity were observed in yam slices that were both pretreated and blanched compared to the control (about 53.49% decrease in the specific activity of the PPOs and 51.46% of POD). The combination of pretreatment and blanching also resulted in lower dry matter yam slices compared to pretreated slices only. After 1 month of storage in the freezer, the lower rates of loss (browning) were recorded for the slices of yams that were both pretreated and blanched compared to the other methods which had very high losses. The pretreated and blanched slices had high dry matter content. The sensory profile of slices processed by the combined technique after one month of freezing had a good appreciation for all sensory characteristics of yam. Conclusion: In order to have a good product, the combined method is recommended for better freezer storage of yam slices.

Physicochemical and sensory parameters of cashew apple jam (Anarcadium occidental L.) harvested in Bondoukou area (North East, Côte d’Ivoire)

2021 ◽  
Vol 2 (2) ◽  
pp. 031-040
Author(s):  
Kouadio Atta ◽  
Gbocho Serge Elvis Ekissi ◽  
Claude Kouamé Ya ◽  
Bedel Jean Fagbohoun ◽  
Lucien Patrice Kouamé
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Phytochemical Analysis ◽  
Acceptance Test ◽  
Cote D’Ivoire ◽  
North East ◽  
Côte D'ivoire ◽  
Cashew Apple

In Côte d'Ivoire, cashew apples represent waste in plantations due to lack of processing. This study deals with their transformation into jam for a better valorization. Cashew apple jam were analyzed for physicochemical and sensory properties. Proximate physiochemical were determined using standard analytical procedures and the sensory acceptance test was performed by 50 panelists on the following attributes. Proximate result showed that moisture content of cashew apple jam was 26.5±1.77% ; carbohydrate 67.7±02.45%, protein 0.7±0.01%; fat and ash contents were 0.16±0.0 and 2.4±0.01% for respectively. pH and titratable acidity were 3.9±0.01 0.06% respectively. Soluble solids (°Brix) was 25±0.98%. Vitamin C and total sugar contents were 276±4.67 (mg/100g) and 51.87±2.18% respectively. Major minerals in the jam were potassium (2762±43.2 mg/Kg), phosphorus (298±4.1 mg/Kg), magnesium (146±1.1 mg/Kg) and calcium (143±2.21mg/Kg). phytochemical analysis revealed presence of tannins (0.8±0.01%), phenol (0.35±0.02%), oxalate (1.87±0.02%) carotenoids (0.70±0.01%), flavonoid (0.20±0.01%), phytate (1.16±0.03%) Results from sensory analysis showed color (7.88±0.55), consistency (8.22±0.83), sweet (8.44±1.09) odour (5.4±0.36) and general acceptability 5.22. Parameters (acidity, astringency and afteraste) scores are less than 3.

scholarly journals Agronomic Performance of Hevea brasiliensis Muell. Arg. Clone IRCA 331 Grown in Southwestern Côte d'Ivoire

2019 ◽  
pp. 1-10
Author(s):  
A. E. A. Elabo ◽  
G. J. O. Atsin ◽  
E. F. Soumahin ◽  
K. M. Okoma ◽  
Y. M. Gnagne ◽  
...  
Keyword(s):  
Cote D'ivoire ◽  
Hevea Brasiliensis ◽  
Large Scale ◽  
Côte D’Ivoire ◽  
Experimental Period ◽  
Agronomic Performance ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
First Choice ◽  
Good Stand

In order to test the agronomic performance of the newly developed clones, a Large-Scale Clone Trial (LSCT) comprising Hevea brasiliensis clones GT 1, IRCA 202, IRCA 331, IRCA 707, PB 280 and PB 310 was established in southwestern Côte d'Ivoire. They were planted in completely randomized blocks with six clone treatments and four replications of 112 trees per clone. The measured parameters included isodiametric growth of the trunk, rubber yield, trees stand, latex physiological parameters and sensitivity to tapping panel dryness (TPD). Collected data was analyzed using Statistica 7.0 statistical software. After ten years of downward tapping and four years of upward tapping, clone IRCA 331 showed significantly higher rubber productivity than all other clones. Its productivity gain, relative to the reference control GT 1, was 63% in downward tapping and 80% in upward tapping. Despite its high level of productivity, the annual rate of isodiametric growth of clone IRCA 331 tree trunks (2.56 cm/year) remained statistically equivalent to that of clone GT 1 (2.62 cm/year) at latex harvesting stage. In addition, the physiological profile of clone IRCA 331 was good and similar to that of the control. Clones IRCA 331, GT1 and PB 280 got the lowest sensitivity to TPD. However, only clones GT1 and IRCA 331 maintained a good stand of tappable trees throughout the experimental period. This experiment highlighted the agronomic performance of the clone IRCA331 and allowed to put it in class 1. Clone IRCA 331 can therefore be used as a clone of first choice to improve national productivity.

scholarly journals Coupling Compost from Chicken Manure and Inorganic Fertilizer to Improve Cassava (Manihot esculenta Crantz) Growth and Yield on a Ferralitic Soil in Côte d’Ivoire

2020 ◽  
Vol 8 (7) ◽  
pp. 1472-1478
Author(s):  
Kouakou Marius Konan ◽  
Sifolo Seydou Coulibaly ◽  
Kouadio Ignace Kouassi ◽  
Bi Irié Arsène Zoro ◽  
Dénezon Odette Dogbo
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Block Design ◽  
Chicken Manure ◽  
Growth And Yield ◽  
Manihot Esculenta Crantz ◽  
Cote D’Ivoire ◽  
Tuberous Roots ◽  
Côte D'ivoire ◽  
Number Of Stems

This study aimed to evaluate the effect of compost from chicken manure, NPK fertilizer and the mixture of both fertilizers on agronomic parameters of four varieties of cassava (Yacé, Bonoua, Six mois and Alleda agba) in Côte d’Ivoire. The field experiment was carried out under a randomized complete block design with three replicates on a ferralitic soil during two season-cycles. The results showed that the different fertilizers stimulated plants growth and tuberous roots production. The highest number of stems (3) and leaves (66) was obtained with the mixture of NPK and compost applied on the variety “Bonoua”. All varieties that received the compost mixed with NPK produced more leaves with a dominance of the Bonoua variety (65.57). The highest number of tuberous roots (5.58), the heaviest weight per root (6.13 kg) and the highest yield (61.37 t/ha) were obtained while using the mixture of compost and NPK as fertilizer and “Bonoua” as variety. Thus, mixing compost from chicken manure and NPK can be recommended to improve cassava productivity in Côte d'Ivoire on a ferralitic soil.

scholarly journals Identified main fire hotspots and seasons in Côte d’Ivoire (West Africa) using MODIS fire data

2021 ◽  
Vol 117 (1/2) ◽  
Author(s):  
Tionhonkélé D. Soro ◽  
Moussa Koné ◽  
Aya B. N’Dri ◽  
Evelyne T. N’Datchoh
Keyword(s):  
West Africa ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Significant Proportion ◽  
Temporal Variations ◽  
Fire Dynamics ◽  
Cote D’Ivoire ◽  
North East ◽  
Côte D'ivoire ◽  
Fire Activity

Biomass burning has become more frequent and widespread worldwide, with a significant proportion occurring in tropical Africa. Fire dynamics have been generally studied at global or regional scales. At local scale, however, fire impacts can be severe or catastrophic, suggesting local analyses are warranted. This study aimed to characterise the spatio-temporal variations of vegetation fires and identify the main fire hotspots in Côte d’Ivoire, a country of West Africa, one of the world’s burn centres. Using MODISderived fire data over a 10-year period (2007–2016), the number of fire days, active fires and fire density were assessed across the entire country. In the southern part dominated by forests, fire activity was low. Three main fire hotspots were identified between 2°30’–8°30’W and 7°00’–10°30’N in the North-West, North-East and Central areas all dominated by savannas. In these areas, Bafing, Bounkani and Hambol regions recorded the highest fire activity where fire density was 0.4±0.02, 0.28±0.02 and 0.18±0.01 fires/km²/year, respectively. At national scale, the annual fire period stretched from October to April with 91% of fires occurring between December and February, with a peak in January. Over the decade, there was a decreasing trend of fire activity. Fire density also was negatively correlated with rainfall >1000 mm for the synchronic analysis, whereas fire density was positively correlated with rainfall in the previous years. Results suggest that the positive relationship between the previous year’s rainfall and fire activity could operate on a cycle from 1 to 4 years.

scholarly journals Characterization of Agropastoral Dam Lakes in the Bounkani Region, Côte d’Ivoire

2021 ◽  
pp. 19-30
Author(s):  
Ettien Yah Carine ◽  
Yao Koffi Blaise ◽  
Kouame Koffi Fernand ◽  
Oga Yéi Marie-Solange
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Annual Rainfall ◽  
Cote D’Ivoire ◽  
North East ◽  
The North ◽  
East Region ◽  
A Value ◽  
Côte D'ivoire ◽  
Sensing Technology

The North-East region (Bounkani) of Côte d'Ivoire is the least watered region of the country with an average annual rainfall of 945 mm. The rainfall deficits observed in Côte d'Ivoire since 1970s could constitute a real threat to the environment and to water resources in general, and to dam lakes in particular. The main aim of this study was to follow the evolution of the dam lakes in the region over the years, i.e,(1986, 2002 and 2017) with reference to their spatial distribution (their densities and their limnological ratios). The approach adopted consisted of mapping and monitoring through remote sensing technology which involves processing satellite images for automatic extraction of these agropastoral structures on the various images. The results showed that these dam lakes were unevenly distributed both at the level of the departments and the watersheds, with 73.43% in the Black Volta and 28.57% in the Comoé. The density was higher in Doropo and varied from one department to another from 1986 to 2017, for the department of Bouna, it ranged from 9.34.10-4 to 3.74.10-3 per km2. The departments of Doropo and Tehini showed 1.51.10-3 to 1.01.10-2 per km2 and 1.05.10-3 to 4.53.10-3 per km2 respectively. Nassian department displayed a value of 1.42.10-3 per km2 and remained constant from 2002 to 2017. Like the density, Doropo Department had the highest limnological ratio which changes from 7.09.10-5 to 2.71.10-4 per km2 over the same period. The mapping of these agropastoral structures showed 18 agropastoral structures where 57 (28.07%) were functional or even contained water in the dry season in the region in 2017 including 2 in Nassian; 4 in Tehini; 9 in Doropo and 3 in Bouna.

scholarly journals Influence of Organic Fertilization on the Physico-Chemical and Organoleptic Quality of Attiekes of Three Varieties of Cassava (Manihot esculenta C.)

2021 ◽  
pp. 145-153
Author(s):  
Serge Couhoulé Allou ◽  
Catherine Bomoh Ebah ◽  
Jean-Baptiste Gnelie Gnahoua ◽  
Bilo Régis Jean-François LOA ◽  
FrançoiseAkissi Kouamé
Keyword(s):  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Poultry Manure ◽  
Titratable Acidity ◽  
Matter Content ◽  
Dry Matter Content ◽  
Organic Fertilization ◽  
Cote D’Ivoire ◽  
Important Place ◽  
Côte D'ivoire

Cassava occupies an important place in the food security of populations in Côte d'Ivoire. There are many products derived from cassava but«attiéké» remains the flagship product in Côte d'Ivoire. Faced with the productivity challenges, organic fertilization is increasingly used by farmers in order to sustainably increase cassava production. The perspective of our study is to assess the effects of the uncombined use of cowpea and poultry manure as organic soil fertilizers on certain physicochemical and sensory characteristics of «attiékés» of three varieties of cassava. To do this, on an experimental plot installed, cowpea fertilization was tested at planting densities of 62,500; 250,000 and 125,000 plants/ha and poultry manure at rates 5; 15 and 5 t/haon, respectively, the cassava varieties Yavo, BoCou1 and Yacé.The results obtained show that cowpea and poultry manure increased the dry matter content respectively by 3.99 and 3.53 % in the Yavo variety by 3.57 and 18.06 % in the BoCou 1 as well as by 17.43 and 17.64 % in the Yacé. For the other parameters of pH, titratable acidity, total carbohydrates and free glucose, the variations depended on the variety and the level of fertilization. The sensory attributes of attiekes from these varieties grown on fertilized soil have been accepted by consumers in terms of color, smell, taste and consistency. In addition, they were rated less good than the controls obtained without fertilizer due to color, taste and consistency, while in terms of odor, it would be the same rating.

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