In order to minimize production losses, and limit the use of chemicals, several organic products have been developed. The objective of this study is to assess the effect of biostimulant Banzai and fertilizer on cocoa tree productivity. Conducted in the department of Toumodi, this study took place in one device with a cocoa field that has received fertilizer in the last three years (DAE) and another that has received no fertilizer in the past three years (DSE). The results obtained showed that the plots that had been applied to Banzai produced significantly more pods than the control plots without application of the biostimulant. Compared to controls, the production rate of pods is greater than between 38 and 70% in the unprecedented fertilizer plots (DSE) and between 51 and 80% in plots with previous fertilizer (DAE). However, the production of pods in treated plots is more than three times high in the DAE than in the DSE. This study shows the positive impact of biostimulant use on cocoa yield. In addition, it shows that the use of fertilizers during the experiment could be abandoned with a view to greater use of organic products at the expense of chemicals that have a detrimental effect on the environment and on the long-term health of populations.

This study aimed to evaluate the relationship between plot maintenance level and the prevalence of Cocoa swollen shoot disease in Kipiri (Department of Soubré) in Côte d'Ivoire. Indeed, the strong pressure of Swollen shoot disease in this department causes enormous damage in cocoa plots.The study design is a prospective survey in peasant cocoa plots between 2014 and 2016. The data were collected using the Land Degradation Surface Framework (LDSF). The LDSF device is a sentinel site of 10 Km × 10 Km. The site is divided into 16 Clusters of 2.5 Km × 2.5 Km with 10 plots by cluster. In the case of our study, surveys were carried out on 108 plots carrying cocoa trees within a radius of 50 m around each test plot. The data collected included areas of Cocoa Swollen Shoot Virus (CSSV) outbreaks, the cocoa plot maintenance level and CSSV status like ‘Absence’ or ‘Presence’ in plots observed. CSSV prevalence was deduced from CSSV outbreaks areas of each sampling plot, allowing realization of disease map. The relationship between the level of plot maintenance and the prevalence of CSSV was assessed by using the analysis of variance test (Anova-one-way). The results of Swollen shoot disease’s distribution showed that the Kipiri site had a CSSV prevalence around 50%.These results demonstrated that plots maintenance level has a strong influence on the prevalence of Swollen shoot disease (p =0.00 < 0.05). At the end of this study, it appears that plots maintenance level is a key factor in the rapid spread of the Swollen shoot epidemic in Kipiri site. Cocoa producers would therefore be recommended to regularly maintain their plantations by eliminating the reservoirs of Cocoa Swollen Shoot Virus.

L’objectif général de cette étude était de comparer l’effet du biostimulant Banzaï et de l’engrais (SUPERCAO et le précédent engrais) sur la pourriture des cabosses. De manière plus spécifique, il s’agissait d’une part d’évaluer l’effet du nombre d’applications du biostimulant Banzaï et d’autre part évaluer l’effet cumulé du précédent engrais et de Banzaï. L’expérimentation a été conduite à N’Gouamoinkro dans le département de Toumodi. Le dispositif est constitué d’un bloc de Fischer avec six traitements répétés trois fois et contenant chacun 20 cacaoyers tests. Ce dispositif a été reproduit sur deux sites dont l’un avec précédent engrais (DAE) et l’autre sans précédent engrais (DSE). Le biostimulant Banzaï a été appliqué pendant trois ou quatre mois consécutifs en fonction du traitement sur chaque site. L’engrais SUPERCAO a été appliqué deux fois au cours de l’expérimentation. Les données collectées ont porté sur le nombre total de cabosses produites et le nombre de cabosses pourries. Les résultats obtenus ont révélé que sur les deux sites (DAE et DSE), les parcelles traitées avec le biostimulant Banzaï ont eu un meilleur contrôle de la pourriture des cabosses que les parcelles témoins. Sur le site du DAE, le contrôle de la pourriture des cabosses a été indépendant du nombre d’application du biostimulant Banzaï et de l’apport d’engrais. Sur le site sans précédent engrais (DSE), les trois applications du biostimulant Banzaï combiné à l’engrais SUPERCAO a eu un meilleur effet de contrôle que les trois applications de Banzaï sans engrais. L’effet cumulé du précédent engrais, et du biostimulant Banzaï, n’a pas eu d’impact positif sur le contrôle de la pourriture des cabosses. Oro et al., 2020 Journal of Animal & Plant Sciences (J.Anim.Plant Sci. ISSN 2071-7024) Vol.45 (1): 7822-7838 https://doi.org/10.35759/JAnmPlSci.v45-1.6 7823 Comparison of the effect of the biostimulant Banzaï and the fertilizer on Black pods disease in the department of Toumodi, Center-East of the Ivory Coast ABSTRACT The overall objective of this study was to compare the effect of the biostimulant Banzaï and the fertilizer (SUPERCAO and previous fertilizer) on black pod disease. More specifically, it involved evaluating the effect of the number of applications of the biostimulant Banzaï and, evaluating the cumulative effect of fertilizer and Banzaï. The experiment was carried out at N’Gouamoinkro in the department of Toumodi. The device consists of a Fischer block with six treatments repeated three times and each containing 20 test cocoa trees. This device was reproduced on two sites, one with previous fertilizer (DAE) and the other without previous fertilizer (DSE). The biostimulant Banzaï was applied for three or four consecutive months depending on the treatment at each site. The SUPERCAO fertilizer was applied twice during the experiment. The data collected related to the total number of pods produced and the number of rotten pods. The results showed that on the two sites (DAE and DSE), the plots treated with the biostimulant Banzaï had better control black pod disease than the control plots. On the DAE site, the black pod disease control was independent of the number of applications of the biostimulant Banzaï and the fertilizer supply. On the DSE site, the three applications of Banzaï biostimulant combined with SUPERCAO fertilizer had a better control effect than the three applications of Banzaï without fertilizer. The cumulative effect of the previous fertilizer, and the biostimulant Banzaï, had no positive impact on the control of black pod disease.

No abstract