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Journal Title Abbrev.
J. Elem.
ISSN – 1644-2296
DOI: 10.5601

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Determination of spatial variability of some magnesium forms in Phaeozem using geostatistical methods

Wydanie: 1/2014

Otrzymano: Brak danych

Zaakceptowano: Luty 10, 2014

Opublikowano online: 2014-03-28


Kobierski M., Długosz J., Piotrowska-Długosz A.

Kategorie: Agricultural, Fisheries and animal bioengineering

DOI: 10.5601/jelem.2014.19.1.604


The spatial variability analysis of soil properties facilitates the prediction of their contents across various sites, useful for design of site-specific farming practices. Intrapopulation and spatial variation of soil available (Mg-A), exchangeable (Mg-E) and water-soluble (Mg-H2O) magnesium forms was evaluated in a field on Phaeozem soil, located in the village Orlinek near Mrocza, in the Province of Kujawy and Pomorze (województwo kujawsko-pomorskie), north-western Poland. Soil samples were collected from an area of 0.5 ha situated within an 80-hectare arable field. In April 2007, 50 soil samples were collected in a 10 x 10 m grid square pattern from the field cropped with winter wheat. The content of Mg forms was analyzed with descriptive statistics and the geostatistic modeling of semivariograms to plot variability maps. The Mg-A content ranged from 4.9 to 12.2 mmol kg-1, while the Mg-E  form varied from 5.6  to 16.4 mmol kg-1. The average content of Mg-H2O was 1.27 mmol kg-1. All the properties revealed a normal content distribution, which coincided with similar values of means, medians and significantly lower values of standard deviations (SD) than the means. Moderate variability of all the Mg forms content was confirmed by the coefficient of variation (CV%), falling within 19.4-23.6 %. The spatial dependence of the Mg forms content was evaluated by the use of semivariograms and krigged maps. The parameters of variogram models, except for the Mg-A content, revealed a share of random variance (a nugget) in total variability (sill). The content of Mg-E demonstrated high spatial dependence (the nugget effect


Kobierski M., Długosz J., Piotrowska-Długosz A. 2014. Determination of spatial variability of some magnesium forms in Phaeozem using geostatistical methods. J. Elem., 19(1): 165  - 176, DOI: 10.5601/jelem.2014.19.1.604

Słowa kluczowe:

available Mg, exchangeable Mg, water-soluble Mg, spatial variability, geostatistics, Phaeozem

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