RT Journal Article
SR Electronic
A1 Ržonca, Jozef
A1 Mitrušková, Martina
A1 Pozdíšek, Jan
A1 Pospíšil, Richard
A1 Mičová, Pavlína
A1 Štýbnarová, Marie
A1 Svozilová, Marie
T1 Energy analysis of various grassland utilisation systems
JF Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
YR 2014
VO 53
IS 4
SP 117
OP 126
DO 10.11118/actaun200553040117
UL https://acta.mendelu.cz/artkey/acu-200504-0014.php
AB 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<sup>-1</sup> to 22.70 GJ.ha<sup>-1</sup>. 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<sup>-1</sup> NEL and 32.40 GJ.ha<sup>-1</sup> 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 31<sup>st</sup> at the latest, every next after 60 days) or two cuts per year (first cut on July 15<sup>th</sup>, next cuts after 90 days).