On observe depuis une vingtaine d'années l'émergence de bassins de production maraîchère dans le Sahara algérien par la mobilisation des eaux souterraines profondes, en marge des oasis traditionnelles. Dans la vallée du Souf, les agriculteurs se sont orientés vers la culture de la pomme de terre, irriguée par des petits pivots artisanaux. L'objectif de l'article est d'analyser le processus d'innovation ayant permis l'émergence et la diffusion du pivot artisanal.
L’agriculture oasienne reflète l’ingéniosité d’une société ayant pu vaincre un milieu hostile et défavorable au peuplement. En Algérie, cette agriculture traditionnelle a été bouleversée par l’introduction des emplois non-agricoles, qui ont perturbé la stratification sociale établie.
Agriculture faces an enormous global challenge of feeding nine billion people by 2050. This means a comprehensive intensification of agriculture is required. Ecological intensification is gaining momentum as a clearly defined vision for increasing agriculture productivity and sustainability. How ecological intensification could be tailored to benefit smallholder farming systems in sub-Saharan Africa (SSA) remains the major question. In this study, we develop pathways relying on ecological intensification technologies and suiting different farm types of smallholder agriculture.
Dans le contexte de changements environnementaux et socio-économiques, l’agriculture en Afrique sub-saharienne devra assurer la sécurité alimentaire des populations, tout en limitant son empreinte écologique. Les contraintes biophysiques et sociales des systèmes de production agricole sont complexes. Les pratiques agricoles innovantes seront basées sur une intensification des processus écologiques qui déterminent le fonctionnement du système sol–plante, des parcelles cultivées ou des agroécosystèmes.
E‐KOKARI is an Interactive Voice Response (IVR) platform, developed in Niger, which enables farmers, breeders and buyers to access information, advice, warnings and market prices in the field of agriculture and livestock. When a user dials a short number from his phone he can access a voice menu in the main local languages (French, Hausa and Zarma) of the country, which guides him/her according to his/her needs. A prototype was developed and tested during a period of 10 months in the course of 2017, but the practice still needs to be implemented and evaluated in the field.
CABI and the Cereal Growers Association (CGA) have been sharing information with farmers in Kenya on how to effectively and safely manage the continuing threat of the invasive fall armyworm (Spodoptera frugiperda). This was achieved thanks to a development communication campaign that combined video sharing through a network of lead farmers and social media.
To determine whether a farmer’s accessibility predicts the delivery of extension services, this study used banana Xanthomonas wilt (BXW) disease-management advisory as a typical case with which to collect extension-delivery information from 690 farmers, distinguished by their respective accessibility. Cost–distance analysis was applied to define each farmer’s accessibility. The results revealed that a farmer’s accessibility does not predict extension delivery to that farmer in all forms of the examined extension parameters.
Though extension services have long since proved their value to agricultural production and farmer prosperity, their record in sub-Saharan Africa has been mixed. To study the impact of such programs on farmers' learning about agricultural technologies, we implemented a quasi-randomized controlled trial and collected detailed panel data among Malawian farmers. Based on those findings, we develop a two-stage learning framework, in which farmers formulate yield expectations before deciding on how much effort to invest in learning about these processes.
Face à la dégradation des ressources naturelles liée à la surexploitation, à la croissance démographique et au changement climatique, les services nationaux de vulgarisation en Tunisie nécessitent une révision de leurs priorités et une réforme de leurs modes de prestation de services.
Ce rapport présente les principaux résultats acquis sur la période févier 2017 à mars 2018, ainsi que les leçons et perspectives.