Title:
Optimization Tool to Assess Machinery Solutions for High Efficient Digestate Organic Fertilization
Author(s):
Fiala, M., Bezzi, G.
Document(s):
Paper
Poster
Abstract:
Digestate is an excellent organic fertilizer that can substitute chemical fertilizers and improve fertility and soil carbon storage when it is applied with high efficiency. In this study, a model for evaluating and comparing the mechanical and economic performances of several specialised digestate transport and distribution systems was applied to simulate fertilization of silage maize in a typical cereal-livestock farm in the Po Valley. The results indicate that the reference solution (22m3 towed slurry spreader tank, both for transport and distribution – SLQ22) is the most economic (€ m-3) but its productivity (t ha-1) and operating capacity (ha h-1) decrease significantly as the transport distance increases. However, more specialized solutions, where transport and distribution phase are distinct, results more efficient and more cost-effective as the distance increases. Compared to the costs of the chemical nitrogen fertilization unit, digestate with specialized mechanical solutions is cost-effective up to distance of approximately 10km. The results indicate that the model is a useful tool for optimising the agronomic digestate use and support decision-making. Validation of the model is currently underway through field trials on real farms, with the aim of further refining its accuracy and applicability.
Keywords:
biogas, fertilization, logistics, digestate, agroenergy farm, biofertilisers
Topic:
Sustainable Resources for Decarbonising the Economy
Subtopic:
Sustainable integrated agricultural management practices
Event:
33rd European Biomass Conference and Exhibition
Session:
1DV.4.26
Pages:
214 - 217
ISBN:
978-88-89407-25-7
Paper DOI:
10.5071/33rdEUBCE2025-1DV.4.26
Price:
FREE
