Variabilita prostorového uspořádání populace Galium aparine L.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F07%3A22170" target="_blank" >RIV/60460709:41210/07:22170 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The variability in spatial distribution of Galium aparine L.

Popis výsledku v původním jazyce

This study is dealing with the impact of weed distribution variability and the arrangement of subsamples on the accuracy of the estimation of the Galium aparine population. Rectangular areas of 400 m2 and 600 m2 were defined within a winter wheat field in 2004 and 2006 respectively and the spatial positions of all G. aparine seedlings in the plots were recorded using a coordinate system. Continual sampling with the use of 1 m x 1 m sampling quadrate was simulated and the semivariograms for parallel andperpendicular direction were calculated. On the above two areas, 289 squares at 3 m x 3 m each were created. In each square, sampling with many spatial alignments of four partial samples was simulated. The estimated values of each sampling method were compared with the mean weed density by Pearson`s correlation coefficient. Geostatistical analysis showed, that the range of spatial dependence varied strongly with the sampling direction. Semivariograms showed stronger spatial continuity al

Název v anglickém jazyce

The variability in spatial distribution of Galium aparine L.

Popis výsledku anglicky

This study is dealing with the impact of weed distribution variability and the arrangement of subsamples on the accuracy of the estimation of the Galium aparine population. Rectangular areas of 400 m2 and 600 m2 were defined within a winter wheat field in 2004 and 2006 respectively and the spatial positions of all G. aparine seedlings in the plots were recorded using a coordinate system. Continual sampling with the use of 1 m x 1 m sampling quadrate was simulated and the semivariograms for parallel andperpendicular direction were calculated. On the above two areas, 289 squares at 3 m x 3 m each were created. In each square, sampling with many spatial alignments of four partial samples was simulated. The estimated values of each sampling method were compared with the mean weed density by Pearson`s correlation coefficient. Geostatistical analysis showed, that the range of spatial dependence varied strongly with the sampling direction. Semivariograms showed stronger spatial continuity al

Druh

D - Stať ve sborníku

CEP obor

GF - Choroby, škůdci, plevely a ochrana rostlin

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

14th EWRS Symposium

ISBN

978-90-809789-2-8

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

128-128

Název nakladatele

European Weed Research Society

Místo vydání

Oslo

Místo konání akce

Hamar, Norway

Datum konání akce

18. 6. 2007

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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