Title:
Biogas and Energy Production Residues for Healthy Agroforestry Systems and Short Rotation Forest Stands - Soil Amendment from Digestate Separate, Less Demanded Peat Fractions and Wood Ash Mix
Author(s):
Lazdiņa, D., Zuševica, A., Makovskis, K., Adamovičs, A.
Document(s):
Paper
Poster
Abstract:
In the last few decades, the use of different industrial waste for soil conditioning gains more interest because it extends the life cycle of these by-products. Organic waste products from the biogas and wood-chip cogeneration plants – digestate and wood ash – can potentially be used as a fertiliser because of their high nitrogen, phosphorus, and potassium content. The aim of this study was to find the optimal dose of ash and mixture for tree stand fertilisation. Two poplar clones were selected as a model objects - ‘OP42’ (syn.Hybride 275) and ‘AUCE’ (selected in Latvia). As a substrate, poor forest soils with low potassium and phosphorus content (pH = 4.3) were used. The substrate was supplemented with a mixture of digestate and ash in different proportions. Measurements of the biomass parameters were performed to assess the effects of fertiliser. It can be concluded from the results that even a low digestate dose significantly improves the morphological parameters of cutting shoots compared to the non-fertilised group. The type of digestate and clone did not have a significant impact on the fertiliser performance.
Keywords:
biomass, fertilization, organic waste, poplar
Topic:
Sustainable Resources for Decarbonising the Economy
Subtopic:
Innovative biomass production for energy integrated into traditional agri-forestry systems
Event:
30th European Biomass Conference and Exhibition
Session:
1AV.4.9
Pages:
137 - 140
ISBN:
978-88-89407-22-6
Paper DOI:
10.5071/30thEUBCE2022-1AV.4.9
Price:
FREE
