Publicação: Variabilidade espacial de atributos químicos em um Argissolo sob pastagem
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Pós-graduação
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Universidade Estadual de Maringá (UEM), Pro-reitoria Pesquisa Pos-graduacao
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Acesso aberto
Resumo
Studies show the importance of knowing the variability of soil attributes for a more efficient management. This work was carried out to evaluate the spatial variability of the chemical attributes of an Ultisol, cultivated with Brachiaria decumbens pasture in Alegre - ES. Soil samples were collected at a depth of 00-0.2 m, at the crossing points of a regular grid with 10 m-intervals, comprising a total of 64 points. Data were submitted to descriptive statistics, geostatistics and kriging interpolation analysis. The coefficient of variation was low for pH, high for Al and m%, and medium the other attributes. The attributes pH, P, H+Al and m% presented strong dependence, and the other moderate dependence. The attributes presented a spatial dependence structure, allowing their mapping by geostatistics techniques.
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Palavras-chave
spatial dependence, geostatistics, kriging
Idioma
Português
Como citar
Acta Scientiarum-agronomy. Maringa: Universidade Estadual de Maringá (UEM), Pro-reitoria Pesquisa Pos-graduacao, v. 30, n. 4, p. 589-596, 2008.
