Estudo da fertilidade de um Latossolo Vermelho-Amarelo húmico sob cultivo de café arábica por meio de geoestatística

Revista Ceres

Samuel De Assis Silva¹  Julião Soares De Souza Lima¹  Gustavo Soares De Souza¹ 

关键词: Coffea arabica L.;    cokriging;    spatial variability;    soil fertility;    Coffea arabica L.;    cokrigagem;    fertilidade do solo;    variabilidade espacial;   

DOI  :  10.1590/S0034-737X2010000400020

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate the fertlity of a humic Red-Yellow Latosol under cultivation of Arabic coffee, using uni and multivariate geoestatistics. The study was carried out in an area cultivated with Coffea arabica L. var. Catuaí, in a grid area totaling 50 points. Soil samples were collected at the depth of 0 - 0.2 m and the attributes P, K, Ca, Mg, clay, sand and silt were evaluated. Data were analyzed using descriptive and exploratory statistics, and then by geoestatistics techniques. The attributes were interpolated by ordinary kriging and cokriging. The soil had, overall, low fertility. The use of sand to estimate K values led to overestimation of this nutrient in the region's highest area and underestimation in the lowest areas. Estimation of Mg as a function of silt provided a more representative map of its distribution with less error.

【 授权许可】

CC BY   
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