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Ciência e Agrotecnologia

versão impressa ISSN 1413-7054versão On-line ISSN 1981-1829

Resumo

MESQUITA, Maria da Glória Bastos de Freitas; MORAES, Sérgio Oliveira; PERUCHI, Fernanda  e  TEREZA, Maria de Carvalho. Alternative of characterization to the soil hydraulic conductivity utilizing probability of occurrence. Ciênc. agrotec. [online]. 2007, vol.31, n.6, pp.1605-1609. ISSN 1413-7054.  https://doi.org/10.1590/S1413-70542007000600001.

The Saturated Hydraulic Conductivity of the soil (Ksat) due to its importance in inform about the capacity of transport of water, solutes and chemical substances in the soil should be well characterized, since in general, this value is used in calculations of flows in the soil. Aiming at proposing an alternative to characterize the Ksat, starting from a series of data, the function density of probability lognormal was used to obtain the values of the property which corresponde to the levels of occurrence probability from 5 to 95%, in order to describe and to indicate better values to be adopted as Ksat for the considered area. As a result, it was obtained an analysis of the values of the variable in terms of occurrence probability. This representation, associating each value to a probability level, allows to the researcher to evaluate the error on estimation of measurements that depend on Ksat, due to the fact that, this property in the soil presents high variability.

Palavras-chave : Variability; probability density functions; occurrence probability; water flux in soil.

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