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Non-linear soil health trajectories in smectitic Vertisols : Coupling sedimentary inheritance to long-term intensive cultivation in Am-Timan, South eastern Chad

Abstract: Long-term cultivation can substantially reorganize soil physicochemical functioning in semi-arid agroecosystems, particularly in smectitic Vertisols developed from fine-grained alluvial deposits. This study assessed depth-dependent soil quality trajectories and the influence of sedimentary inheritance along a cultivation chronosequence in Southeastern Chad, comprising an uncultivated reference and fields cultivated for approximately 25, 35, and 50 years

Length-weight relationship, condition factor and reproductive characteristics of Synodontis rebeli from the lower Sanaga River, Cameroon

Jonathan Armel Mbondo, Marie Dieudonnée Laure Tchiedjo, Adrien Mariel Essoh Etouke, Étienne Didier Bassock Bayiha and Dieu Ne Dort Bahanak This study investigated the length–weight relationship (LWR), condition factor (K), and reproductive characteristics of Synodontis rebeli from the lower Sanaga River, Cameroon. A total of 257 specimens were collected bimonthly between January 2024 and March

Le lait de caprin pour réduire les importations

Des chercheurs de l’IRAD veulent impacter la production laitière caprine afin de limiter la dépendance du Cameroun aux produits laitiers importés. Améliorer durablement la production laitière caprine afin de contribuer à la sécurité alimentaire, la nutrition, et l’augmentation des revenus des éleveurs. C’est l’objectif que s’est fixée une équipe de chercheurs de l’IRAD constituée notamment