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Title: Soil moisture space-time analysis to support improved crop management
Other Titles: Análise espaço-temporal da umidade do solo como apoio para melhoria do manejo da cultura
Keywords: Water use efficiency
Soil management
Deep soil tillage
Plant-available water
Eficiência de uso da água
Manejo do solo
Preparo profundo do solo
Disponibilidade de água para a planta
Issue Date: Jan-2015
Publisher: Editora da Universidade Federal de Lavras
Citation: SILVA, B. M. et al. Soil moisture space-time analysis to support improved crop management. Ciência e Agrotecnologia, Lavras, v. 39, n. 1, p. 39-47, jan./fev. 2015.
Abstract: The knowledge of the water content in the soil profile is essential for an efficient management of crop growth and development. This work aimed to use geostatistical techniques in a spatio-temporal study of soil moisture in an Oxisol in order to provide that information for improved crop management. Data were collected in a coffee crop area at São Roque de Minas, in the upper São Francisco River basin, MG state, Brazil. The soil moisture was measured with a multi-sensor capacitance (MCP) probe at 10-, 20-, 30-, 40-, 60- and 100-cm depths between March and December, 2010. After adjusting the spherical semivariogram model using ordinary least squares, best model, the values were interpolated by kriging in order to have a continuous surface relating depth x time (CSDT) and the soil water availability to plant (SWAP). The results allowed additional insight on the dynamics of soil water and its availability to plant, and pointed to the effects of climate on the soil water content. These results also allowed identifying when and where there was greater water consumption by the plants, and the soil layers where water was available and potentially explored by the plant root system.
Appears in Collections:DCS - Artigos publicados em periódicos

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