puutuhka

name

• puutuhka

Works about puutuhka

• Cadmium in wood ash used as fertilizer in forestry : risks to the environment and human health
• Factors controlling nitrous oxide emissions from drained peat soils : effects of wood ash fertilization
• Physicochemical studies regarding the utilization of wood- and peat-based fly ash
• Recycling of wood- and peat-ash : a successful way to establish full plant cover and dense birch stand on a cut-away peatland
• Yield and quality of vegetables fertilized with human urine and wood ash