"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." . . "1"^^ . . "P(1G57042), Z(MSM6046070905)" . "Pro\u0161ek, V." . "978-80-213-1668-3" . . . . "CULS Prague" . . "Kv\u00EDz, Z." . "Variability of undesirable soil compaction within large plots"@en . "5"^^ . . "[F9912605B7FD]" . "bulk density; cone index; tensile force"@en . "Variability of undesirable soil compaction within large plots" . "Hlavn\u00ED n\u00E1pln\u00ED pr\u00E1ce bylo hled\u00E1n\u00ED vztahu mezi p\u0159\u00EDm\u00FDmi a nep\u0159\u00EDm\u00FDmi metodami m\u011B\u0159en\u00ED zhutn\u011Bn\u00ED a fyzik\u00E1ln\u00EDch vlastnost\u00ED. Byla sledov\u00E1na potenci\u00E1ln\u00ED mo\u017Enost vyu\u017Eit\u00ED pro pot\u0159eby precizn\u00EDho zem\u011Bd\u011Blstv\u00ED. Pro \u00FA\u010Dely na\u0161eho m\u011B\u0159en\u00ED byla variabilita p\u016Fdn\u00EDch vlastnost\u00ED, zejm\u00E9na orni\u010Dn\u00ED vrstvy, sledov\u00E1na pomoc\u00ED neporu\u0161en\u00FDch vzork\u016F p\u016Fdy, penetrometrick\u00E9ho m\u011B\u0159en\u00ED, leteck\u00E9 fotografie a tahov\u00E9 s\u00EDly. Pozemek vykazoval variabilitu ve v\u0161ech sledovan\u00FDch parametrech. P\u0159i vz\u00E1jemn\u00E9m hodnocen\u00ED v\u0161ak nebyly nalezeny uspokojiv\u00E9 korela\u010Dn\u00ED z\u00E1vislosti. Uk\u00E1zalo se \u017Ee tahov\u00E1 s\u00EDla i leteck\u00FD sn\u00EDmek maj\u00ED vypov\u00EDdac\u00ED schopnost. D\u00EDky nep\u0159etr\u017Eit\u00E9mu m\u011B\u0159en\u00ED u tahov\u00E9 s\u00EDly a celoplo\u0161n\u00E9ho pokryt\u00ED sledovan\u00E9 plochy leteckou fotografi\u00ED z\u00EDsk\u00E1me rozs\u00E1hl\u00FD soubor dat, kter\u00E9 dok\u00E1\u017E\u00ED odhalit variabilitu pozemku s vysok\u00FDm rozli\u0161en\u00EDm. Na kone\u010Dn\u00E9 hodnoty ale vz\u00E1jemn\u011B p\u016Fsob\u00ED mnoho faktor\u016F, kter\u00E9 je zapot\u0159eb\u00ED doplnit detailn\u00EDm pr\u016Fzkumem."@cs . "6"^^ . . . . . "Variability of undesirable soil compaction within large plots" . . "Prikner, P." . "457520" . "H\u016Fla, Josef" . "RIV/00027031:_____/07:8P007520!RIV08-MZE-00027031" . . . "RIV/00027031:_____/07:8P007520" . "Variabilita ne\u017E\u00E1douc\u00EDho zhutn\u011Bn\u00ED p\u016Fdy na velk\u00FDch pozemc\u00EDch"@cs . "Variabilita ne\u017E\u00E1douc\u00EDho zhutn\u011Bn\u00ED p\u016Fdy na velk\u00FDch pozemc\u00EDch"@cs . "2007-09-12+02:00"^^ . "CULS Prague" . . . "Trends in Agricultural Engineering 2007, 3rd International Conference TAE 2007" . "Variability of undesirable soil compaction within large plots"@en . "Praha" . "Kroul\u00EDk, M." . "224-229" . "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 . . .