Substrates for vegetable seedlings production through composting of urban wastes
composting
Agroecology
family farming
Organic vegetable production relies on the availability of high-quality seedlings produced in accordance with current legislation. Simultaneously, society generates a significant amount of organic solid waste with agricultural potential. The rational utilization of these waste materials, in addition to contributing to environmental preservation, may present a low-cost option for farmers. The majority of waste from organic composition must undergo some sort of process to render it suitable for agricultural use, and composting is typically the most utilized method. There are several initiatives for the use of these waste materials, and composting is a promising approach. This process not only eliminates foul odors but also renders a bio-stabilized material free from biological contaminants. However, not all bio-stabilized organic compost possesses the necessary physical and chemical characteristics for optimal seedling development. Therefore, it is necessary to improve its physical and chemical atributes, aiming to achieve suitable moisture, aeration, electrical conductivity, pH, and nutrient content for growing vegetables. In light of this, it is essential to develop new substrate formulations that promote better utilization of organic solid waste and assess their efficacy and quality in seedling production. This will contribute to reducing nutrient waste, reinforcing organic vegetable production, generating income, and aiding in environmental preservation. The aim of this project is to propose substrate formulations for vegetable seedling production, utilizing a compost produced from organic solid waste materials such as industrial effluents, pruning residues, food waste, and treated industrial sludge as the main raw material. As a result, it is expected to verify that the development of substrates for vegetable seedling production utilizing a biostabilized organic compost produced from organic solid waste materials (industrial effluents, pruning residues, food waste, and treated industrial sludge) enriched with pelleted legume biomass, is feasible without compromising the performance of vegetable seedlings when compared to other reference substrate formulations.