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| Silva,Elisângela Benedet; Giasson,Élvio; Dotto,André Carnieletto; Caten,Alexandre ten; Demattê,José Alexandre Melo; Bacic,Ivan Luiz Zilli; Veiga,Milton da. |
| ABSTRACT The success of soil prediction by VIS-NIR-SWIR spectroscopy has led to considerable investment in large soil spectral libraries. The aims of this study were 1) to develop a soil VIS-NIR-SWIR spectroscopy approach using legacy soil samples to improve spectral soil information in a regional scale; (2) to compare six spectral preprocessing techniques; and (3) to compare the performance of linear and non-linear multivariate models for prediction of sand and clay content. A total of 1,534 legacy soil samples, stored by Epagri, were collected from agricultural areas in 2009 on a regional scale, covering 260 municipalities of Santa Catarina. Six spectral preprocessing techniques were applied and compared with reflectance spectra (control treatment) in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil spectral library; Multivariate models; Preprocessing techniques; Santa Catarina. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100304 |
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