Pratiques et indicateurs agroécologique des agroécosystèmes traditonnels et innovants de l'est du Burkina Faso : alternatives d'optimisation

Abstract : The effect of traditional and innovative agroecological practices on the fertility parameters of agricultural soils grown in the field was studied. The study was carried out in a peasant environment in the agricultural area of Sampieri in eastern Burkina Faso in the Sudano-Sahelian environment onlixisols. Farmers' perception of soil degradation and the practice of agroecology, the determinants of the adoption of agroecological practices and the effect of these practices on physical, chemical and microbiological parameters were determined for plots under agroecological practices, versus traditional, compared to control soils. The effect of these practices on the yield (grains and straws) of sorghum was also evaluated. The study showed that traditional practices are being gradually replaced by agroecological cultivation practices that have been taught to producers by the partners involved in the area. The determinants of the adoption of these practices are among others the increase in crop yields, the improvement of producers' income, the supply or not of material and human resources and the training of actors. It is also noted that farmers have indicators specific to them to appreciate and describe the fertility of their soils. The effect of the practices was more significant for most chemical parameters (C, N, CE,...) especially for the 0-10 cm layer. Agroecological practices have a significantly positive effect on the mineralizing activity of soil microorganisms. In addition, there was a correlation between the area of stony cord parcels and most soil fertility parameters. On the otherhand, no gradient of soil fertility appears as a function of the slope when one moves away from the first line of stony cord.
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Aboubacar Coulibaly. Pratiques et indicateurs agroécologique des agroécosystèmes traditonnels et innovants de l'est du Burkina Faso : alternatives d'optimisation. Sciences de la Terre. Université d'Orléans; Université Ouaga 1 Professeur Joseph Ki-Zerbo (Ouagadougou, Burkina Faso), 2018. Français. ⟨NNT : 2018ORLE2025⟩. ⟨tel-02096193⟩

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