Biodegradable Pots with Rock Dust: a Sustainable Alternative to the Use of Plastics in Nurseries

Objective: The aim of this study is to investigate the feasibility of producing biodegradable vases from recycled cardboard enriched with rock dust, with the aim of offering a sustainable alternative to conventional plastic vases and evaluating their physical and mechanical properties. Theoretical Framework: This topic presents the main concepts related to sustainability, reusing solid waste, sustainable agriculture and replacing plastic materials with biodegradable ones. Theories on the circular economy, waste management and the use of remineralisers are highlighted, providing a solid basis for understanding the research context. Method: The methodology adopted for this research comprises the production of 30 biodegradable pots, divided into five treatments with different proportions of rock dust (0%, 25%, 50%, 75% and 100%) mixed with cardboard. Data was collected by visual inspection, weighing and watering resistance tests over 35 days, and the results were compared with conventional plastic pots. Results and Discussion: The results showed that the pots with 75 per cent rock dust had greater resistance, followed by the pots with 50 per cent. The treatment with no powder obtained the worst performance. The data was discussed in the light of the literature on biodegradable and remineralising materials, taking into account the limitations of the study. Research Implications: The practical implications of this research cover nurseries, urban agriculture and environmental projects, contributing to viable, low-cost ecological alternatives. Originality/Value: This study contributes to the literature by proposing an innovative approach that combines recycling and sustainability, with a potential positive impact on seedling production and a reduction in the use of plastic.