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Antônio Luis Santi ; Mateus Tonini Eitelwein ; Clovis Orlando Da Ros ; Mateus Bortoluzi Bisognin ;Revista Ciência Agronômica 2014, 45 4

Autor: Maurício Roberto Cherubin

Fuente: http://www.redalyc.org/


Introducción



Revista Ciência Agronômica ISSN: 0045-6888 ccarev@ufc.br Universidade Federal do Ceará Brasil Cherubin, Maurício Roberto; Santi, Antônio Luis; Tonini Eitelwein, Mateus; Da Ros, Clovis Orlando; Bortoluzi Bisognin, Mateus Sampling grids used to characterise the spatial variability of pH, Ca, Mg and V% in Oxisols Revista Ciência Agronômica, vol.
45, núm.
4, octubre-diciembre, 2014, pp.
659-672 Universidade Federal do Ceará Ceará, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=195331351004 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative Revista Ciência Agronômica, v.
45, n.
4, p.
659-672, out-dez, 2014 Centro de Ciências Agrárias - Universidade Federal do Ceará, Fortaleza, CE www.ccarevista.ufc.br Artigo Científico ISSN 1806-6690 Sampling grids used to characterise the spatial variability of pH, Ca, Mg and V% in Oxisols1 Malhas amostrais utilizadas na caracterização da variabilidade espacial de pH, Ca, Mg e V% em Latossolos Maurício Roberto Cherubin2*, Antônio Luis Santi3, Mateus Tonini Eitelwein4, Clovis Orlando Da Ros3 e Mateus Bortoluzi Bisognin5 ABSTRACT - Knowledge of spatial variability is an important factor to be considered in planning a program of soil sampling and crop management under precision agriculture (PA).
In this context, the aim of this work was to evaluate the efficiency of the dimensions of sampling grids used in the state of Rio Grande do Sul (RS), Brazil to characterise the spatial variability of the attributes pHwater, base saturation (V%), calcium (Ca) and magnesium (Mg) levels.
The study was carried out on 30 agricultural sites located in the northern region of RS, having soils classified as Oxisols and managed using the tools of PA.
The dimensions of the grids under study...





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