Varietal Improvement of Pepper in Cote d'Ivoire

Pepper (Capsicum spp.) is an important component of various cropping systems and dishes in Cote d'Ivoire. The need to meet local market demand has prompted the development of high-yielding hot pepper varieties. Three local selections and 20 AVRDC-introduced breeding lines were evaluated in a three-replicate randomized complete block design. Data were collected on fruit and plant characteristics as well as on fruit yield and yield components. Large variations were found in all studied variables. Date of 75% flowering occurred between 52 and 77 days after sowing. First harvest date varied from 99 to 134 days after sowing, while plant height at first harvest ranged from 42 to 92 cm. Fruit size and fruit form were quite diverse. Maximum total fresh fruit weight (5490 g/plot) was about 10 times higher than that of the lowest-yielding (557 g/plot) entry. Selection within those lines has potential to contribute to the improvement of pepper productivity in Cote d'Ivoire.

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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

Turkish Journal of Agriculture - Food Science and Technology ◽

10.24925/turjaf.v8i7.1472-1478.3307 ◽

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.

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Inhibitors of Cellulase Activities According to the Trophic Group of Termites (Insecta: Isoptera) from Daloa (Côte d'Ivoire)

International Journal of Biochemistry Research & Review ◽

10.9734/ijbcrr/2019/v28i430153 ◽

2019 ◽

pp. 1-7

Author(s):

Blei Sika Hortense ◽

Tra Bi Crolaud Sylvain ◽

Eba Krou Philippe ◽

Beugre Avit Grah Maxwell ◽

Faulet Meuwiah Betty ◽

...

Keyword(s):

Cote D'ivoire ◽

Crop Production ◽

Côte D’Ivoire ◽

Cellulase Activity ◽

Trophic Group ◽

The Other ◽

Market Demand ◽

Cote D’Ivoire ◽

Chemical Agents ◽

Côte D'ivoire

The presence of termites in the cocoa plantations and quarries of Côte d'Ivoire poses a threat to the producers of this sector. Producer yields are insufficient to cover the strong market demand. This situation leads to food insecurity for the population. Knowledge of the specific inhibitory molecules of digestive enzymes of termites is necessary to enhance the effectiveness of insecticides to optimize crop production. The present study was aimed to characterize termite cellulases according to the trophic group. Specifically, the influence of chemical agents on the cellulase activities of four humivorous (Cubitermes fungifaber) and xylophagous termites (Nasutitermes latifrons, Microcerotermes fuscotibialis and Amitermes guineensis) collected in Daloa during the October period was investigated. Thus, the cellulase activities were measured by the spectrophotometric method in the absence and in the presence of the concentrations of 1 and 5 mM of various chemical agents. The chemical agents used behaved differently on cellulase activities. Thus, Cu2+, Pb2+ and EDTA inhibited the cellulase activity of M. fuscotibialis more than 90% at concentrations of 1 and 5 mM, respectively, indicating the presence of a metalloprotein. On the other hand, that of the other two xylophagous species was slightly inhibited. In addition, the cellulase activity of C. Fungifaber was inhibited at the two respective concentrations by Cu2+ at about 70%. In conclusion, Cu2+, pb2+ and EDTA can be used in the formulation of some specific insecticides against humivorous and xylophagous termites.

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

Asian Journal of Agriculture and Rural Development ◽

10.18488/journal.1005/2017.7.6/1005.6.120.130 ◽

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.

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Breeding for resistance to tomato bacterial wilt: Identification of potential sources of genetic resistance by field evaluation of 28 tomato cultivars in Daloa, Côte d’Ivoire

Journal of Agricultural and Crop Research ◽

10.33495/jacr_v8i12.20.206 ◽

2020 ◽

Vol 8 (12) ◽

pp. 305-313

Author(s):

N’Guessan Olivier Konan ◽

◽

Yao Patrice Houphouet ◽

Ibrahim Konaté ◽

Saïdou Diallo Mamadou ◽

...

Keyword(s):

Cote D'ivoire ◽

Bacterial Wilt ◽

Ralstonia Solanacearum ◽

Rainy Season ◽

Côte D’Ivoire ◽

Block Design ◽

Breeding Program ◽

Cote D’Ivoire ◽

Côte D'ivoire ◽

Tomato Cultivars

Bacterial wilt caused by Ralstonia solanacearum is one of the most damaging tomato diseases in the world. The best strategy for controlling this disease is to use genetically resistant tomato plants. In this study, 28 tomato cultivars were evaluated in the field for their resistance to bacterial wilt in Daloa, one of the most important agricultural regions of Côte d'Ivoire. The experiments were carried out during the dry and rainy season and the experimental design was a Randomized Complete Block Design (RCBD) with three replications. The results showed the presence of wilt disease. The streaming test and bacterial culture on growth medium proved the bacterial origin of the wilt symptoms observed. The results of the staining reactions revealed short, straight, rod and Gram negative bacteria similar to R. solanacearum. The severity of the disease was found to be higher in the dry season than in the rainy season. Of 28 cultivars evaluated, 7 cultivars were resistant and did not show any diseased plants during the two study periods. These cultivars constitute interesting sources of resistance for a breeding program aimed at the development of new resistant cultivars adapted to the region of Daloa. Keywords: Bacterial wilt, Ralstonia solanacearum, resistance, tomato, Solanum lycopersicum, breeding program.

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Use of Vermicompost in the Control of Rhizoctonia sp: Impact on Tomato (Solanum lycopersicum L) Production

Asian Journal of Advances in Agricultural Research ◽

10.9734/ajaar/2021/v17i230191 ◽

2021 ◽

pp. 11-21

Author(s):

Abobi Akré Hebert Damien ◽

Guei Arnauth Martinez ◽

Zro Bi Gohi Ferdinand ◽

Dale Dalé Jonathan

Keyword(s):

Cote D'ivoire ◽

Côte D’Ivoire ◽

Crop Yields ◽

Block Design ◽

Mineral Fertilizers ◽

Vegetable Production ◽

Tomato Crop ◽

Cote D’Ivoire ◽

Tomato Plants ◽

Côte D'ivoire

The area planted for vegetable production is increasing in Côte d'Ivoire while crop yields are decreasing due to low soil fertility, poor application of mineral fertilizers and poor plant development due to pest pressure. The trial carried out at the experimental site of the University Jean Lorougnon Guédé of Daloa, Central-Western Côte d'Ivoire, aims at evaluating the potential of vermicompost to reduce the attacks of the Rhizoctonia sp fungus on the tomato crop and increase its production. The trial was carried out using the Fischer randomized block design where four treatments were repeated four times. Four substrates, composed of mixtures of soils and doses of vermicompost (0, 20, 40 and 60 t/ha), inoculated with the fungus, were used for the cultivation of tomato in pots. Agronomic and phytosanitary parameters were evaluated on tomato plants at the end of the trial. The results showed that the production increased with the addition of vermicompost and this, the higher the dose of vermicompost added. The health of tomato plants was also improved by the reduction of Rhizoctonia sp attacks, especially with the 60t/ha dose, for which the disease severity and incidence indices were the lowest, 15% and 14%, respectively, against 41% and 38% obtained with the control. Vermicompost could be used to control fungal diseases of tomato and improve its production.

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Effect of Tillage on Agro-morphological Parameters and Yield of Cassava (Manihot esculenta crantz) in Abongoua, East-Central Côte d'Ivoire

Asian Research Journal of Agriculture ◽

10.9734/arja/2021/v14i430132 ◽

2021 ◽

pp. 1-10

Author(s):

N’ganzoua Kouamé René ◽

N’dakou Koua Ambroise ◽

Kouame Amany Guillaume ◽

Konate Zoumana ◽

Bakayoko Sidiky

Keyword(s):

Cote D'ivoire ◽

Côte D’Ivoire ◽

Block Design ◽

Control Treatment ◽

Good Growth ◽

Morphological Parameters ◽

Manihot Esculenta Crantz ◽

Cote D’Ivoire ◽

East Central ◽

Côte D'ivoire

The objective of this work is to improve the production and yield of cassava cultivated by tillage. The experiment was conducted in the field for 13 months (June 2019-july 2020) in Abongoua in the department of Bongouanou (East-central Côte d'Ivoire). After the cleaning of a 900 m2 surface of a fallow of more than 5 years, and cleared of all plant debris, soil samples were taken with an auger in the 40 cm surface in each corner and in the center of the experimental plot to constitute the composite sample for laboratory analysis. The trials were conducted in a randomized complete block design with four replicates in which four elementary plots were distributed. Three treatments T1 (tilled soil), T2 (mounded soil) and T3 (ridged soil) compared to a control treatment T0 (no-till soil) were applied in each microplot. The cuttings were directly sown at a rate of 12 cuttings per treatment. The data of the different parameters collected underwent an analysis of variance (ANOVA) performed with SAS software version 9.4 and the means were separated using the Newman and Keuls test at the 5% probability threshold. The results showed an acidic soil with a sandy texture and a good supply of nutrients, particularly major elements, trace elements and clay-humus complex. Good growth and development of agro-morphological parameters as well as yield were obtained with treatments T3 (ridged soil), T2 (mounded soil) and T1 (tilled soil) in decreasing order of importance compared to the control treatment (T0). In conclusion, the study clearly showed that the type of tillage, particularly the ridged tillage technique, improves the agro morphological parameters, productivity and yield of cassava. What we recommend to farmers for a good yield of cassava in the area.

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

Open Agriculture ◽

10.1515/opag-2017-0009 ◽

2017 ◽

Vol 2 (1) ◽

Cited By ~ 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’.

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