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Energy plant encyclopedia

wood fuel

Poplar, willow and robinia in short rotation Short rotation plantation (SRC) or energy wood from energy forest of fast-growing woody plants (poplar, willow and robinia) on arable or grassland areas represent a valuable and necessary alternative for biogenic raw material supply already today and especially in the future.

Fertilizing Energy Plants

Fertilizers are not necessarily needed; however, they could help slightly increase the yields (up to 100 kg N/ha). First of all, N-fertilizing provides a yield-increasing effect upon willows. In the year of planting, fertilizing would not be recommended, since this can cause bad maturing in autumn. Fertilizing using compost, manure or ash, if applicable, could […]

Genera, Clones and Varieties of Energy Wood

Clone means the entire range of plants having the same genetic material. Cloning is realized thrugh vegetative propagation, i.e. using shoot parts of the mother tree. In Middle Europe, we usually consider poplars and willows, the latter to be used, first of all, for water-rich soils and for cooler or highly located sites. However, willow […]

Harvesting Energy Timber

Harvesting is in the vegetation pause between December and March depending on planting distances and varieties every 2-10 years. Willows and robinia re harvested more frequently than poplars. Similarly, smaller distances or fully mechanized harvesting also provide results oftener than larger distances and extensive harvesting methods. Harvesting can be fully mechanized using re-built maize choppers […]

Legal Criteria (Austria) for Energy Woods

You should consider distances from bordering properties. The minimal distances are stipulated by provincial legislation. 3 to maximum 10 m are recommended as turning circles. The fast-rotation farm should be timely registered (within 10 years upon arrangement thereof) with a community or a district authority and harvested in accordance with §1(5) of the Forest Act […]

Planting Poplar/Willow Saplings

Energy woods, such as poplars, willows or robinia, are planted in spring, from mid-March to at latest mid-May (upland). About 20 cm long saplings, 1-2 m long rods or one-year 1-2 m long rooted saplings are settled or planted down to 20 to max. 50 cm in the ground and pressed down well. Doing so, […]

Preparing Soil for Energy Timber

Plough the arable land to 25-30 cm in autumn, then harrow immediately before planting in spring. The moment is determined by the preceding crop and the soil characteristics; cohesive soils – autumn or winter furrow (mellowness due to frost), light soils can also be tilled directly before planting. Greenland: Mandatory soil tilling (exception: Planting roots […]

Recultivation – Grubbing the Fast-Rotation Areas

Upon the end of the rotation period, the stocks will be removed, and root stocks will be destroyed using a wood mulcher (at the depth of about 35 cm). The driving speed regulates the crushing ratio. Further agricultural use is possible with tillers then-available on the market without any problems. When resettling, the soil must […]

Warum auf Kurzumtriebswirtschaft setzen?

Erste Versorgungsschwierigkeiten durch die steigende Anzahl an Biomasseheiz(kraft)werken und ebenso Kleinfeuerungsanlagen im privaten Bereich sowie auch gleichzeitig steigender Bedarf der Zellstoff-, Platten- und Sägeindustrie lassen die Suche nach Alternativen zum herkömmlichen Energieholz aus dem Wald aktueller denn je werden. Durch einen Energiewald können andererseits auch unterdurchschnittliche Flächen sinnvoll genutzt werden, eine Alternative zur oftmals wenig interessanten Verpachtung geschaffen werden, sowie die lukrative Möglichkeit für Zusatzeinkommen von landwirtschaftlichen Betrieben ermöglicht werden. Zudem ist das Thema Unabhängigkeit und Versorgungssicherheit heute für jeden in die Zukunft schauenden Landwirt ein ganz wichtiger Punkt.

Willows

Especially in Sweden, experts have been breeding willows for the cultivation of energy woods. We also sometimes hear about sporadic initiatives from Poland, Italy and England; however, we have not had any experience with them so far. Willows are more suitable for short-term to medium-term rotations, such as 2-7 years with the stocking of about […]

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