Photo credit: STRATUS
The utilization of bioashes in Croatia presents a valuable opportunity for sustainable disposal and agroforestry applications. These alkaline byproducts, derived from forest biomass plants, can effectively address the challenge of acidic soil (pH < 6) by enhancing soil fertility and reducing the need for mineral fertilizers and commercial conditioners.
At the beginning of the project, we analysis the needs and key goals were identified – to prove the usability of using ash from the biomass thermal power plant for the purpose of improving agricultural production
and the fertility of agricultural areas on acidic and poorly supplied soils with P, K and other macro/micro-elements. Soil samples were taken from partner-managed plots for initial screening and analysis of pH, P, K, and humus content. Detailed pedological research was conducted on selected plots, including morphological analysis and physio-chemical laboratory analyses. A 2-year field experiment with bioash treatments was carried out, monitoring soil changes, microbiology, and crop yield. Over 400 soil samples were analyzed for physical-chemical and microbiological properties. Plant material was also tested for yield and nutrient content.
Through years of extensive research in both field and controlled settings, the project has investigated the impact of different bioash doses on physico-chemical and microbiological properties of acid soils, as well as the qualitative and quantitative parameters of agricultural crops. The project resulted in increased soil fertility and innovative products for soil amelioration, recognized with awards for sustainability and waste management.
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