{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T09:12:58Z","timestamp":1770973978322,"version":"3.50.1"},"reference-count":62,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2010,8,24]],"date-time":"2010-08-24T00:00:00Z","timestamp":1282608000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tThe objectives of this research were to: (i) develop hyperspectral narrow-band models to determine soil variables such as organic matter content (OM), sum of cations (SC = Ca + Mg + K), aluminum saturation (m%), cations saturation (V%), cations exchangeable capacity (CEC), silt, sand and clay content using visible-near infrared (Vis-NIR) diffuse reflectance spectra; (ii) compare the variations of the chemical and the spectroradiometric soil analysis (Vis-NIR). The study area is located in S\u00e3o Paulo State, Brazil. The soils were sampled over an area of 473 ha divided into grids (100 \u00d7 100 m) with a total of 948 soil samples georeferenced. The laboratory RS data were obtained using an IRIS (Infrared Intelligent Spectroradiometer) sensor (400\u20132,500 nm) with a 2-nm spectral resolution between 450 and 1,000 nm and 4-nm between 1,000 and 2,500 nm. Satellite reflectance values were sampled from corrected Landsat Thematic Mapper (TM) images. Each pixel in the image was evaluated as its vegetation index, color compositions and soil line concepts regarding certain locations of the field in the image. Chemical and physical analysis (organic matter content, sand, silt, clay, sum of cations, cations saturation, aluminum saturation and cations exchange capacity) were performed in the laboratory. Statistical analysis and multiple regression equations for soil attribute predictions using radiometric data were developed. Laboratory data used 22 bands and 13 \u201cReflectance Inflexion Differences, RID\u201d from different wavelength intervals of the optical spectrum. However, for TM-Landsat six bands were used in analysis (1, 2, 3, 4, 5, and 7).Estimations of some tropical soil attributes were possible using laboratory spectral analysis. Laboratory spectral reflectance (SR) presented high correlations with traditional laboratory analyses for the soil attributes such as clay (R2 = 0.84, RMSE = 3.75) and sand (R2 = 0.85, RMSE = 3.74). The most sensitive narrow-bands in modeling (using 474 observations) these attributes were B8 (1,350\u20131,417 nm), B10 (1,417\u20131,449 nm), B11 (1,449\u20131,793 nm), B15 (1,927\u20132,102 nm), B16 (2,101\u20132,139 nm), and B17 (2,139\u20132,206 nm); B7 (975\u20131,350 nm), B10, B11, B16, B19 (2,206\u20132,258 nm) and B21 (2,258\u20132,389 nm) for clay and sand, respectively. The bands selected to model sand and clay, by orbital data, were 3, 5 and 7 of TM-Landsat-5 and 2, 5 and 7 sand and clay, respectively. The use of soil analysis methodology by ground remote sensing constitutes an alternative to traditional routine laboratory analysis.\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t <\/jats:p>","DOI":"10.3390\/rs2081998","type":"journal-article","created":{"date-parts":[[2010,8,24]],"date-time":"2010-08-24T11:24:32Z","timestamp":1282649072000},"page":"1998-2016","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Variation of Routine Soil Analysis When Compared with Hyperspectral Narrow Band Sensing Method"],"prefix":"10.3390","volume":"2","author":[{"given":"Jos\u00e9 A. M.","family":"Dematt\u00ea","sequence":"first","affiliation":[{"name":"Department of Soil Science, University of S\u00e3o Paulo, Av. P\u00e1dua Dias 11, Piracicaba, S\u00e3o Paulo, Brazil"}]},{"given":"Peterson R.","family":"Fiorio","sequence":"additional","affiliation":[{"name":"Department of Biosystems Engineering, University of S\u00e3o Paulo, Av. P\u00e1dua Dias 11, Piracicaba, S\u00e3o Paulo, Brazil"}]},{"given":"Suzana R.","family":"Ara\u00fajo","sequence":"additional","affiliation":[{"name":"Department of Soil Science, University of S\u00e3o Paulo, Av. P\u00e1dua Dias 11, Piracicaba, S\u00e3o Paulo, Brazil"}]}],"member":"1968","published-online":{"date-parts":[[2010,8,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"765","DOI":"10.1071\/EA97158","article-title":"Soil chemical analytical accuracy and costs: Implications from precision agriculture","volume":"38","author":"McBratney","year":"1998","journal-title":"Aust. J. Exp. 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(1999). 27 Congresso Brasileiro de Ci\u00eancia do Solo."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/2\/8\/1998\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T22:03:12Z","timestamp":1760220192000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/2\/8\/1998"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,8,24]]},"references-count":62,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2010,8]]}},"alternative-id":["rs2081998"],"URL":"https:\/\/doi.org\/10.3390\/rs2081998","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,8,24]]}}}