Ash is a significant by-product (waste) of various biomass-fuelled facilities (thermal power plants, heating plants, dryers), which must be adequately disposed of, or preferably recycled. The project is aiming to study the effects of bioash application for the neutralization of acidic soils (pH<6) and recovery of agricultural soils deficient with phytonutrients, given bioash is extremely alkaline (pH> 12) and enriched with Ca/Mg/P/K minerals. As part of the pedological studies, 5 plots with acidic soils will be selected and treated with different bioash dosages. During the next 2 growing seasons, agricultural crops will be grown on ash-treated plots, following the regular agrotechnical operations, and the effects of the ash application on: i) physico-chemical and microbiological changes in soil, as well ii) yield and quality of crops will be studied. Additionally, the possibility of using bioash for the production of novel, more applicative (vs. bioash) microcapsulated form will be performed in lab conditions through kinetic experiments. The novel bioash-based products, as well as their precursor, will be in detail examined by advanced microscopic and mineralogical analyzes. The project results will be useful to main stakeholders (farmers, consultants, industrial partners, project developers) in agri-food production on acidic and/or low-nutrient soils, whether in conventional or organic farming. Finally, the project outcomes will be useful for ministries and regulation authorities in further promotion of bioash on agricultural and forestry soils by improving the existing regulations.