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Resume Les irregularites pluviometriques constatees depuis les annees 1970 ont tot fait de perturber les cycles culturaux et de bouleverser le calendrier agricole traditionnel. L’objectif global de cette recherche vise a evaluer les manifestations, perceptions et adaptations paysannes des variations intra-saisonnieres des pluies et la production agricole dans la Commune de Tori-Bossito. La demarche methodologique adoptee est axee sur la recherche documentaire et les enquetes de terrain. L’analyse des statistiques climatologiques (pluviometrie, temperature, humidite), les observations directes, les interviews directes et la methode des itineraires a permis d’avoir les informations indispensables et de connaitre les facteurs responsables des variations intra-saisonnieres des pluies et la production agricole dans la commune de Tori-Bossito. Les resultats obtenus montrent que les variations intra-saisonnieres des pluies se manifestent par un demarrage tardif de la pluie et s’arrete precocement avec une forte pluie selon 85 % des enquetes et ceci suite aux deboisements anarchique, aux perturbations du climat par les forces obscurantisme, l’exploitation de grande emblavure pour la production agricole et les feux de vegetations chez les populations paysannes. Cependant cela bouleverse le cycle du calendrier agricole et provoque a 85 % une baisse au niveau du rendement agricole. Mais, chaque saison et sequences climatiques sont generatrices de contraintes telles que 45 % de la reduction de la duree des saisons pluvieuses, 25 % du prolongement du nombre de jours d’harmattan, les fortes chaleurs (35 %), les vents orageux (10 %), etc. En reaction a ces contraintes, les populations developpent des strategies d’adaptations telles que l’organisation des ceremonies et offrandes aux dieux et ancetres pour favoriser la pluie en cas de demarrage tardif. Abstract Rainfall irregularities observed since the 1970s have disrupted crop cycles early and upset the traditional agricultural calendar. The overall objective of this research is to evaluate the peasant manifestations, perceptions and adaptations of the intra-seasonal variations of the rains and the agricultural production in the Municipality of Tori-Bossito. The methodological approach adopted focuses on desk research and field surveys. The analysis of climatological statistics (rainfall, temperature, and humidity), direct observations, direct interviews and the route method provided essential information and knowledge of the factors responsible for intra-seasonal variations in rainfall and production. In the municipality of Tori-Bossito. The results obtained show that the intra-seasonal variations of the rains are manifested by a late start of the rain and stops early with a heavy rain according to 85 % of the respondents and this following the uncontrolled deforestation, the disturbances of the climate by the forces obscurantism, the exploitation of large area for the agricultural production and the fires of vegetation at the peasant populations. However, this disrupts the cycle of the agricultural calendar and causes a 85% decrease in the agricultural yield. But, each season and climatic sequences generate constraints such as 45% of the reduction of the duration of the rainy seasons, 25 % of the extension of the number of harmattan days, the hot weather (35 %), the stormy winds (10 %), etc. In response to these constraints, the populations develop adaptation strategies such as the organization of ceremonies and offerings to the gods and ancestors to promote the rain in the event of a late start, the adoption of a new fashion in time of harmattan, etc. Key words: Benin, Tori-Bossito, intra-seasonal variations, agricultural production

Variations Intra-Saisonnières des Pluies et Production Agricole dans la Commune de Tori Bossito au Benin