Energy analysis of various grassland utilisation systems
| Autor: | Jozef Ržonca, Martina Mitrušková, Jan Pozdíšek, Richard Pospíšil, Pavlína Mičová, Marie Štýbnarová, Marie Svozilová |
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| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 53, Iss 4, Pp 117-126 (2005) |
| Druh dokumentu: | article |
| ISSN: | 1211-8516 2464-8310 |
| DOI: | 10.11118/actaun200553040117 |
| Popis: | In 2003 and 2004 was carried out the energy analysis of the different types of permanent grassland utilization on the Hrubý Jeseník locality. There were estimated values of the particular entrances of additional energy. Energy entrances moved according to the pratotechnologies from 2.17 GJ. ha–1 to 22.70 GJ.ha–1. The biggest share on energy entrances had fertilizers. It was 84.93% by the nitrogen fertilisation. The most energy benefit of brutto and nettoenergy was marked by the low intensive utilisation (33.40 GJ.ha–1 NEL and 32.40 GJ.ha–1 NEV on average). The highest value of energy efficiency (13.23%) was marked by the low intensive utilization of permanent grassland. By using of higher doses of industrial fertilizers has energy efficiency decreased. From view of energy benefit and intensiveness on energy entrances it appears the most available utilisation of permanent grassland with three cuts per year (first cut on May 31st at the latest, every next after 60 days) or two cuts per year (first cut on July 15th, next cuts after 90 days). |
| Databáze: | Directory of Open Access Journals |
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