Replication Data for: A dataset of soil properties and crop observations from a long-term organic fertilization trial in Sub-Sahelian market gardening

Recycling the growing stock of organic waste products (OWP) from cities, factories, and farms is a key challenge for sustainable agriculture. However, it must be done with awareness of potential long-term environmental and health risks. The SOERE PRO observatory was created in this context, including the trial in Sangalkam, Dakar region (Senegal), where these data were collected. Since 2016, four fertiliser types - one mineral (synthetic) and three organic - were applied on three crops a year (tomato, lettuce, carrot). A multi-variable dataset was consistently documented, including soil physico-chemical parameters measured at three depth once a year, OWP characterization, crop parameters, and management activities. All soil, OWP and vegetables samples are stored in a sample bank in Dakar, also described in the dataset, and available for additional analyses. The dataset has been shared in a Dataverse repository for free (re)use in meta-analyses, process modelling and other environmental studies or new projects (the trial is still running), in particular for understanding tropical ecosystem dynamics (nutrients, contaminants, biodiversity), and guiding sustainable land management practices.