. . "2007-09-12+02:00"^^ . "H\u016Fla, Josef" . . . "Variability of undesirable soil compaction within large plots"@en . . . . "\u010Cesk\u00E1 zem\u011Bd\u011Blsk\u00E1 univerzita v Praze. Technick\u00E1 fakulta" . . . "[A8662ECAA9E2]" . "RIV/60460709:41310/07:20363" . . . "Collection of abstracts Trends in Agricultural Engineering 2007" . "Variabilita ne\u017E\u00E1douc\u00EDho zhutn\u011Bn\u00ED p\u016Fdy vr\u00E1mci velk\u00FDch pozemk\u016F"@cs . "bulk density, cone index, tensile force"@en . "Praha" . "The main topic of the work was to find relationships between direct and indirect methods of measuring soil compaction and related physical properties. The variability of topsoil properties was evaluated using undisturbed soil samples, cone index, tensile force measurements and aerial photography. The plot showed variability in all parameters investigated. Nevertheless, during cross-evaluation procedure no significant correlations were found. It was proved that the data from the tensile force measurements and taking aerial pictures have a good predicative ability. By means of continuous measuring of the tensile force and full-area aerial images of the observed field surface, it was possible to obtain a comprehensive data file which was able to show the plot variability at high resolution. However, it is necessary to say, that generally, the final values can be affected by more factors which should be completed with more detailed plot research." . "978-80-213-1664-5" . "Z(MSM6046070905)" . "41310" . "Prikner, Patrik" . "4"^^ . . "Neuvedeno, 0" . . "Kroul\u00EDk, Milan" . . "The main topic of the work was to find relationships between direct and indirect methods of measuring soil compaction and related physical properties. The variability of topsoil properties was evaluated using undisturbed soil samples, cone index, tensile force measurements and aerial photography. The plot showed variability in all parameters investigated. Nevertheless, during cross-evaluation procedure no significant correlations were found. It was proved that the data from the tensile force measurements and taking aerial pictures have a good predicative ability. By means of continuous measuring of the tensile force and full-area aerial images of the observed field surface, it was possible to obtain a comprehensive data file which was able to show the plot variability at high resolution. However, it is necessary to say, that generally, the final values can be affected by more factors which should be completed with more detailed plot research."@en . "4"^^ . . . "Variability of undesirable soil compaction within large plots" . . "RIV/60460709:41310/07:20363!RIV08-MSM-41310___" . "57;57" . . "The main topic of the work was to find relationships between direct and indirect methods of measuring soil compaction and related physical properties. The variability of topsoil properties was evaluated using undisturbed soil samples, cone index, tensile force measurements and aerial photography. The plot showed variability in all parameters investigated. Nevertheless, during cross-evaluation procedure no significant correlations were found. It was proved that the data from the tensile force measurements and taking aerial pictures have a good predicative ability. By means of continuous measuring of the tensile force and full-area aerial images of the observed field surface, it was possible to obtain a comprehensive data file which was able to show the plot variability at high resolution. However, it is necessary to say, that generally, the final values can be affected by more factors which should be completed with more detailed plot research."@cs . "457521" . "Technick\u00E1 fakulta, \u010CZU v Praze" . "Variability of undesirable soil compaction within large plots" . "Variability of undesirable soil compaction within large plots"@en . "Variabilita ne\u017E\u00E1douc\u00EDho zhutn\u011Bn\u00ED p\u016Fdy vr\u00E1mci velk\u00FDch pozemk\u016F"@cs . . "Kv\u00EDz, Zden\u011Bk" . "1"^^ .