University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal

Logo BOKU Resarch Portal

Gewählte Master / Diploma Thesis:

Dominik Sima (2007): Kumulierter Energieaufwand in der ökologischen Grundfutterproduktion.
Master / Diploma Thesis, BOKU-Universität für Bodenkultur, pp 105 Seiten. UB BOKU obvsg FullText

Data Source: ZID Abstracts
Abstract:
This paper deals with the cumulative energy demand in ecological forage production. The calculation of the cumulative energy demand is based on VDI Richtlinie 4600 (Guideline on cumulative energy demand formulated by the Association of German Engineers (VEREIN DEUTSCHER INGENIEURE, 1997). The assumptions in the paper rely mainly on the values submitted by SCHOLZ (1997) or were gathered from different literary sources. For the purpose of this paper an ecologically operated grassland farm with a grassland area of 10 hectares, an assumed dry matter yield of ca 7 t per hectare with a cutting frequency of three times per season is used as balance area. For the calculation of the cumulative energy demand three different grass conservation methods are applied: field dried hay, air ventilated hay and silage. Eventually there are however 14 different preservation methods available for the respective calculations, due to a further differentiation of the three main methods according to the characteristics of dry matter content at the time of harvesting and the choice of different machinery and equipment at production. The production of field dried hay as well as of air ventilated hay and of silage in stockpiled silo has a small energy demand. An energy-intensive harvesting procedure however is for example the production of round bales. This results from the additional energy effort for the production of the used plastic films and the use of the baler. This paper provides also calculations for the energy demand in ecological and conventional production of concentrated feed (barley), which is compared to forage production. The cumulative energy demand for the production of barley is much higher than of ecological forage from grassland.

Beurteilende(r): Boxberger Josef

© BOKU Wien Imprint