scholarly journals Evaluation of Rainfall and Temperature Conditions for a Perennial Crop in Tropical Wetland: A Case Study of Cocoa in Côte d’Ivoire

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Fidèle Yoroba ◽  
Benjamin K. Kouassi ◽  
Adama Diawara ◽  
Louis A. M. Yapo ◽  
Kouakou Kouadio ◽  
...  

The rainfall and temperature conditions are evaluated for the first time during the 1989–2006 period, in six main cocoa production areas (Abengourou, Agboville, Daloa, Dimbokro, Guiglo, and Soubre) of Côte d’Ivoire using data from SODEXAM (ground-based observation) and the ex-CAISTAB. Statistical analysis shows an important sensitivity of cocoa production to rainfall conditions in all regions. It is worth noting that only the major rainy season from April to July and the rainfall amount of the little dry season from August to September affect the cocoa production for an 80% confidence level. This influence varies from one cacao production area to another. Moreover, the effects related to temperature on the cocoa yield seem to represent a smaller contribution of climate impact than those related to precipitation during the studied period. The temperature change remains in the acceptable range of values, between 25°C and 29°C, which is a favorable condition for cocoa growing. These findings are obtained despite the significant contributions from nonclimatic factors, to year-to-year variability in cocoa production.

2021 ◽  
Vol 3 (1) ◽  
pp. 051-062
Author(s):  
Kpangui Kouassi Bruno ◽  
Sangne Yao Charles ◽  
Kouakou Kouassi Apollinaire ◽  
Koua Kadio Attey Noël ◽  
Koffi N'Guessan Achille

The mountainous relief of the West of Côte d'Ivoire and the large savannahs next to forests didn’t make this zone very excellent for cocoa production. However, for the last decade, an important influx of farming population has been observed in this area. The objective of this study is to analyze the dynamics of the settlement of migrant farmers in the West region of Côte d’Ivoire, using the department of Biankouma as a case of study. So, individual surveys were conducted among 203 cocoa farmers from 15 villages in the department of Biankouma, who had migrated to this region, It was found that the majority of these farmers are natives of Côte d'Ivoire (38.3%) and non-natives (33.5%) from countries in the West Africa region. The migratory flow to this region is mainly internal, with 95.6% of farmers coming from 11 Districts and 55 localities in the country. While initially (i.e., before 1985), farmers came from towns near Duékoué (11.8%), these waves of movement from towns in neighboring districts (Bas-Sassandra and Sassandra-Marahoué) to the Western Region will experience their highest rates between 2002 and 2013. Observations drawn from our research findings support the hypothesis that the political-military crisis that the country has experienced has accentuated migratory flows of farmers for cocoa production in western Côte d'Ivoire and these migratory flows could be the cause of the degradation of forest cover in the Biankouma Department.


2018 ◽  
Vol 14 (12) ◽  
pp. 143
Author(s):  
Charles Sékpa Dekoula ◽  
Brou Kouame ◽  
Emmanuel Kouadio N’goran ◽  
Fernand Guy Yao ◽  
Jean-Noël Ehounou ◽  
...  

In Côte d’Ivoire, agriculture is mostly rain-fed. As a result, changes and variations of climate have considerable impacts on crops production including cotton production. This paper focuses on analyzing the effects of rainfall variations on the cropping season (useful rain season) of cotton in cotton production area of Côte d’Ivoire. A set of stationarity tests was applied to the Nicholson index using rainfall data of the period 1950-2000. Then, from a frequency analyses, the variability of rainfall and characteristic parameters of the cropping season was evaluated in terms of risks. The result shows a general downward trend of rainfall in the cotton growing area with years of breaks between 1964 and 1975. Moreover, spatial evolution of the cropping season parameters is a function of latitude. After the years of breaks, the beginning and the end of the cotton cropping season, which became respectively later and earlier, indicated that the length of useful rain season became shorter. The deficits of seasonal rainfall accumulations vary up to 60%. It is therefore necessary to update the crop calendar by taking into account variability of parameters of the useful rain season.


2021 ◽  
Vol 12 (08) ◽  
pp. 440-457
Author(s):  
BROU Kouassi Guy ◽  
DOUMBIA Mohamed ◽  
Doga Dabé ◽  
KOUASSI Koffi II Nazaire

Anthracnose disease is one of the main major biotic constraints to the marketing of mango in Côte d'Ivoire. The objective of this work is to report on the distribution of mango anthracnose disease in the mango production basin in northern Côte d'Ivoire. This study focused on 740 mango trees spread over 20 orchards, consisting mainly of the Kent variety. These orchards are located in three (3) study locations, namely the Bagoué, Tchologo and Poro regions. The study consisted of evaluating the incidence and severity of anthracnose in leaf, fruit and branch organs of 740 mango trees in 20 orchards in the three study regions.


2017 ◽  
Vol 13 (1) ◽  
pp. 148
Author(s):  
Aka Solange ◽  
Dje Koffi Marcellin ◽  
Aka Solange ◽  
Fokou Gilbert ◽  
Doumbia Mohamed ◽  
...  

The tchapalo, traditional Ivorian beer, formerly produced in northern Côte d'Ivoire, has overflowed the geographical limits of its production. Its consumption is becoming more momentum in Abidjan. For a better knowledge of actors and a valorization of this beverage, this work was conducted through a survey of 385 brewers and 77 tchapalo consumers selected in 3 areas of Abidjan. Results showed that tchapalo is produced exclusively by Burkinabe women (45.5%) and the Ivorian women came from northern part of Côte d'Ivoire (53.2%), mainly women of the Lobi ethnic group (90.2%). Tchapalo production was a significant source of income for these women. The biggest consumers of tchapalo came from the Akan ethnic group which represented 52.5% of respondents. Because of its financial accessibility (300 CFA francs per liter), tchapalo is consumed by all socio-economic and professional groups, particularly foremen (41%) and laborers (31.7%). Consumers who found therapeutic principles to the tchapalo represented 54.3% of respondents. Furthermore, over 95% of respondents preferred to consume into tchapalo production area to meet friends and also to maintain fraternity links with brewers. However, 25.7% of consumers chose to consume in a specific tchapalo production area for the taste of the beverage and 25.5% due to welcome that their reserves the producer. Favorite consumption moments were afternoons and evenings.


Author(s):  
Norbert N’Dri Kouamé ◽  
François Kouamé N’Guessan ◽  
Pierre Walet N’Guessan ◽  
Alain Jacques Acka Kotaix ◽  
Yao Tano

The cocoa tree is a very important plant in Côte d'Ivoire (formerly known as Ivory Coast) with a production of 2,15 million  tons. In spite of this performance, cocoa production is attacked by several pests of which the emerging ones are Pseudotheraptus devastans (Distant). These insects  attack  cherelles,  pods, gourmands and young shoots. This study aims to locate these pests and determine their importance in the different cocoa production areas. The device used is total  randomization. The leaching carried out in the orchard revealed the presence of P.devastans in all the cocoa producing districts. The means were 0,02 ± 0,00 to 2,35 ± 0,38 P. devastans  / tree.  The  districts of Sassandra-Marahoué, Comoé and Montagnes recorded  more  P.devastans.  However, the districts of Bas-Sassandra, Lagunes et Lacs had fewer P.devastans.


2019 ◽  
Vol 33 (2) ◽  
pp. 350-364
Author(s):  
Coulibaly Kigbajah Salifou ◽  
Cao Erbao ◽  
Amadou Maiga Ousseini ◽  
T. Metuge Mekongcho

2021 ◽  
Vol 5 ◽  
Author(s):  
Jiska A. van Vliet ◽  
Maja A. Slingerland ◽  
Yuca R. Waarts ◽  
Ken E. Giller

It is often claimed that cocoa producers are poor, but the extent of their poverty is rarely defined. We analyzed six data sets derived from household questionnaires of 385–88,896 cocoa producers in Côte d'Ivoire and Ghana. Across all data sets, many households (30–58%) earn a gross income below the World Bank extreme poverty line and the majority (73–90%) do not earn a Living Income. Households with less income per person per day generally achieve lower cocoa yields, consist of more household members, have a smaller land size available, and rely more on cocoa income than households with higher incomes. When comparing the effects of increasing prices and yields on gross income, yield increases lead to larger benefits especially for the poorest households. Doubling the cocoa price would leave 15–25% of households with a gross income below the extreme poverty line and 53–65% below the Living Income benchmark. At yields of 600 kg/ha, against current yields around 300 kg/ha, these percentages are reduced to 7–11 and 48–62%, respectively, while at yields of 1,500 kg/ha only 1–2% of households remain below the extreme poverty line and 13–20% below the Living Income benchmark. If we assume that the production costs of achieving a yield of 1,500 kg/ha are 30% of revenue, still only 2–4% of households earn a net income below the extreme poverty line and 25–32% below the Living Income benchmark. Whilst sustainable intensification of cocoa production is undoubtedly a strong approach to increase cocoa yields and farmer incomes, achieving this does not come without pitfalls. The poorer households face multiple barriers to invest in cocoa production. A better understanding of cocoa producing households and the resources available to them, as well as the opportunity for alternative income generation, is required to tailor options to increase their income. The utility and interpretability of future household surveys would be drastically improved if definitions and variables addressed were approached in a standardized way.


Plant Disease ◽  
2012 ◽  
Vol 96 (10) ◽  
pp. 1445-1450 ◽  
Author(s):  
K. Kouakou ◽  
B. I. Kébé ◽  
N. Kouassi ◽  
S. Aké ◽  
C. Cilas ◽  
...  

The discovery of new outbreaks caused by Cacao swollen shoot virus (CSSV) in Côte d'Ivoire in 2003, when this disease seemed to have been eradicated since the end of the 1950s in that country, casts doubt on the sustainability of Ivorian cocoa production. The aims of this study were, first, to carry out a molecular characterization of CSSV isolates from the main outbreaks in Côte d'Ivoire; second, determine their phylogenetic position in relation to isolates already discovered in Togo and Ghana; and, finally, study their geographical distribution to understand the dispersal of the virus. Additionally, this study was intended to enable the implementation and validation of a polyvalent molecular diagnosis assay for CSSV. Sequences analyses, corresponding to a fragment located at the 5′ end of open reading frame (ORF)3 of the CSSV genome, revealed three new CSSV groups (D, E, and F) distinct from the A, B, and C groups already identified in Togo. Only group B was detected in all the outbreaks, whereas groups A and C were not identified in Côte d'Ivoire. In addition, a polymerase chain reaction diagnostic using the ORF3A F/R primer pair was polyvalent, because it enabled the detection of CSSV in 90% of the plots in all the cocoa regions analyzed by this study.


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