Tag Archives: Norway Spruce

468–477 D. Lazdiņa, I. Bebre, K. Dūmiņš, I. Skranda, A. Lazdins, J. Jansons and S. Celma
Wood ash – green energy production side product as fertilizer for vigorous forest plantations
Abstract |
Full text PDF (553 kB)

Wood ash – green energy production side product as fertilizer for vigorous forest plantations

D. Lazdiņa*, I. Bebre, K. Dūmiņš, I. Skranda, A. Lazdins, J. Jansons and S. Celma

Latvian State Forest Research Institute ‘Silava’, Riga str. 111, LV-2169 Salaspils, Latvia
*Correspondence: dagnija.lazdina@silava.lv

Abstract:

Notable amounts of wood ash containing plant macro and micronutrient elements in balanced proportions are produced in Latvia. If bioenergy production source product is plant material, and facilities are operating well, then ‘side product’ fermentation residues or wood ashes should not contain elements in toxic concentrations. Wood ash contains P and K which are lacking in acidic organic soils and could work as fertiliser as well as a long term liming agent, besides that, all micronutrient elements necessary for physiological processes are present in wood ash. Wood ash could also be used as ‘revitalization agents’ – fertilisers to improve the growth of plantation forests. The aim of this research is to find and describe the positive effect of wood ash fertilisers on Norway spruce (Picea abies) and other economically valuable tree species. Research results show positive wood ash application effect on tree growth and vitality within the first 4 years when used for recultivation and revitalization purposes. Recycling of wood ash (0.5–3 t ha- 1 before planting) for fertilisation of and Picea abies forest plantations are a sustainable and effective solution for the improvement of tree growth as well as an environmentally safe method of utilization of bioenergy production residues.

Key words:

, , , , , ,




495–512 Z. Libiete, A. Bardule and A. Lupikis
Long-term effect of spruce bark ash fertilization on soil properties and tree biomass increment in a mixed scots pine-Norway spruce stand on drained organic soil
Abstract |
Full text PDF (667 kB)

Long-term effect of spruce bark ash fertilization on soil properties and tree biomass increment in a mixed scots pine-Norway spruce stand on drained organic soil

Z. Libiete, A. Bardule and A. Lupikis*

Latvian State Forest Research Institute Silava, Rigas Str. 111, LV-2169 Salaspils, Latvia
*Correspondence: ainars.lupikis@silava.lv

Abstract:

Ash contains all plant nutrients, except N, and is often used to facilitate forest growth and to prevent nutrient depletion potentially caused by harvesting. In this paper, we report effects of a large dose of spruce bark ash on soil properties and tree biomass increment in a mixed Scots pine-Norway spruce stand on drained organic soil in central Latvia, 12 years after ash application. Significant positive growth response after wood ash fertilization was recorded only for overstorey spruce. During the 12 years after fertilization the additional volume increment was 8.3 m3 ha-1 or 0.7 m3 ha-1 annually. The effect of wood ash application is long-term. Also 12 years after treatment fertilized overstorey spruces demonstrated 0.6 m3 ha-1 additional annual volume increment compared to the controls. Additional diameter increment increased during the first 10 years after treatment but started to decrease in 2012. Results demonstrate that ash fertilization did not change N availability in the soil, and additional growth can be explained with improved supply of P, Ca, Mg and other nutrients. Ash application did not significantly influence the chemical composition of the O layer.

Key words:

, , , , ,