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 Author(s): SCHLINDWEIN, J. A.; MIOTTI, A. A.; FIORELI-PEREIRA, E. C.; PEQUENO, P. L. DE L.; BORTOLON, L.; MARCOLAN, A. L. Soil clay content is an important soil attribute and has been used to classification of phosphorus status in the soil in order to determinate the needing of phosphorus amounts to be applied to crops p... ... |
 Author(s): TEIXEIRA, D. D. B.; MARQUES JUNIOR, J.; SIQUEIRA, D. S.; VASCONCELOS, V.; CARVALHO JUNIOR, O. A.; MARTINS, E. de S.; PEREIRA, G. T. This study aimed to use spatial uncertainty of magnetic susceptibility (MS) and clay content to improve soil- mapping units. In an experimental area of 870 ha, a regular sampling grid containing 371 p... ... |
 Author(s): VASQUES, G. de M.; RODRIGUES, H. M.; TAVARES, S. R. de L.; COELHO, M. R. In this study, data from NIR, gamma ray and XRF curves, and three multivariate methods (partial least squares regression - PLS, random forest - RF, and support vector machine - SVM) were used to predi... ... |
 Author(s): ROGERI, D. A.; GIANELLO, C.; BORTOLON, L.; AMORIM, M. B. Mehlich-1 soil extract is currently used in Rio Grande do Sul (RS) and Santa Catarina (SC) States, in Brazil, to evaluate soil phosphorus available to plants and Mehlich-1 is sensitive to soil bufferi... ... |
 Author(s): VIEIRA, S. R.; GREGO, C. R.; TOPP, G. C.; REYNOLDS, W. D. The water, element essential for life, is present as a large reservoir in the soil. Soil water content varies in space as a consequence of the variability of other related properties and its study is... ... |
 Author(s): FERREIRA, A. C. de S.; CEDDIA, M. B.; COSTA, E. M.; PINHEIRO, E. F. M.; NASCIMENTO, M. M. do; VASQUES, G. M. Soil texture has a great influence on the physical-hydric and chemical behavior of soils. In the Amazon regions, due to the presence of dense forest cover and limited access to roads, carrying out sur... ... |
 Author(s): SILVA-SANGOI, D. V. DA; MOURA-BUENO, J. M.; DALMOLIN, R. S. D.; GEBLER, L. Os teores de argila e de matéria orgânica do solo (MOS) são propriedades importantes que determinam a qualidade dele. Conhecer esses teores no solo está relacionado a uma série de processos de interes... ... |
 Author(s): MCINERNEV, R.; STUART, J.; NOVOTNY, E. H.; HAYES, M. H. B.; YOUNG, K. China Ball clay has been used for centuries in the tiling and pottery-ware industry. Because it is much finer than the other components in the casting slip the ball clay dominates the particle-particl... ... |
 Author(s): SILVA FILHO, A. M.; SILVA, C. L. B.; OLIVEIRA, M. A. A.; PIRES, T. G.; ALVES, A. J.; CALIXTO, W. P.; NARCISO, M. G. This paper presents the study of the relationship between electrical properties and physical characteristics of the soil. Measures of apparent electrical resistivity of the soil were made for differen... ... |
 Author(s): FONGARO, C. T.; DEMATTÊ, J. A. M.; RIZZO, R.; SAFANELLI, J. L.; MENDES, W. de S.; DOTTO, A. C.; VICENTE, L. E.; FRANCESCHINI, M. H. D.; USTIN, S. L. Abstract: Soil mapping demands large-scale surveys that are costly and time consuming. It is necessary to identify strategies with reduced costs to obtain detailed information for soil mapping. We aim... ... |
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