Metsänlannoitus

Metsänlannoitus is a forestry practice aimed at increasing forest growth and timber production by adding nutrients to the soil. This is particularly relevant in areas where natural nutrient availability limits tree development. The primary nutrients supplied are typically nitrogen, phosphorus, and potassium, often in the form of mineral fertilizers. Sometimes, trace elements are also added if deficiencies are identified.

The decision to undertake metsänlannoitus is usually based on assessing the soil's nutrient status and the specific needs of the tree species. Different tree species have varying nutrient requirements, and the effectiveness of fertilization can depend on factors like soil type, moisture levels, and the age of the forest. Metsänlannoitus is most commonly applied to established forests, often during the stand's development phase, to accelerate growth and improve wood quality.

The application methods vary, with aerial spreading being common for large forest areas, while ground-based methods are used for smaller or more accessible plots. Environmental considerations are important, including the potential for nutrient runoff into water bodies and the impact on biodiversity. Research is ongoing to optimize fertilization strategies for both economic and ecological sustainability, balancing increased timber yields with minimal environmental disturbance. Metsänlannoitus is a tool used to manage forest resources and enhance productivity in Finnish forestry.