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| rdf:type
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| Description
| - V letech 2000-2003 byla na 19 ha pozemku v Praze-Ruzyni určena prostorová variabilita minerálního dusíku Nmin (N-NH4+, N-NO3ˉ ) v půdě do hloubky 60 cm. Na pozemku byla pěstována ozimá pšenice (200,2001), oves (2002) a hořčice (2003). Koeficient variability nitrátového N v ornici (0-30 cm) a podorničí (30-60 cm) se v letech pohyboval mezi 19-39 % a 20-37 %. Variabilita amonného N v ornici a podorničí byla v rozmezí 9-60 % a 12-25 %. Ve všech letech existoval kladný vztah mezi obsahem nitrátového N v ornici a podorničí. Nebyl pozorován vztah mezi obsahem minerálního N mezi jednotlivými ročníky. Prostorová závislost byla hodnocena na základě modelových parametrů variogramů. Hodnota prostorové závislosti vyjádřená jako podíl zbytkového rozptylu (nuggetu) z hodnoty prahu variogramu (sill) byla použita pro určení třídy prostorové závislosti. Silná zavislost byla nalezena ve dvou případech. Rozsah variogramu (range) se pohyboval mezi 61 m a 396 m. (cs)
- Spatial variability of soil mineral nitrogen Nmin (N-NH4+, N-NO3ˉ ) in a soil profile down to 60 cm was determined in 19-ha experimental field in Prague - Ruzyně in four years. Winter wheat was grown in years 2000 and 2001, oats in 2002 and mustard in 2003. Root length distribution and depth of the crops were determined at four locations representing different soil conditions within the experimental field. The coefficient of variation as the measure of the variability of nitrate N in topsoil and subsoil (0-30 cm and 30-60 cm, resp.) in experimental years ranged between 19-39 % and 20-37 %, resp. It was mostly the same or slightly greater in subsoil than in topsoil in respective years. The variability of ammonium N in topsoil and subsoil ranged between 9-60 % and 12-25 %, resp. It was similar at topsoil and subsoil, except for autumn 2000. There was a positive relation between nitrate content in top and subsoil on all sampling terms. We did not find relation between Nmin contents in exper
- Spatial variability of soil mineral nitrogen Nmin (N-NH4+, N-NO3ˉ ) in a soil profile down to 60 cm was determined in 19-ha experimental field in Prague - Ruzyně in four years. Winter wheat was grown in years 2000 and 2001, oats in 2002 and mustard in 2003. Root length distribution and depth of the crops were determined at four locations representing different soil conditions within the experimental field. The coefficient of variation as the measure of the variability of nitrate N in topsoil and subsoil (0-30 cm and 30-60 cm, resp.) in experimental years ranged between 19-39 % and 20-37 %, resp. It was mostly the same or slightly greater in subsoil than in topsoil in respective years. The variability of ammonium N in topsoil and subsoil ranged between 9-60 % and 12-25 %, resp. It was similar at topsoil and subsoil, except for autumn 2000. There was a positive relation between nitrate content in top and subsoil on all sampling terms. We did not find relation between Nmin contents in exper (en)
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| Title
| - The spatial variability of mineral nitrogen content in topsoil and subsoil
- Prostorová variabilita minerálního N v ornici a podorničí (cs)
- The spatial variability of mineral nitrogen content in topsoil and subsoil (en)
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| skos:prefLabel
| - The spatial variability of mineral nitrogen content in topsoil and subsoil
- Prostorová variabilita minerálního N v ornici a podorničí (cs)
- The spatial variability of mineral nitrogen content in topsoil and subsoil (en)
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| skos:notation
| - RIV/00027006:_____/04:157!RIV08-MZE-00027006
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/00027006:_____/04:157
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - mineral nitrogen; Nmin; spatial variability; kriging; roots; winter wheat; oats; mustard. (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Plant, Soil and Environment
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Svoboda, Pavel
- Cerhanová, Dana
- Kroulík, Milan
- Krejčová, Jana
- Lipavský, Jan
- Haberle, Jan
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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