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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
21/02/2014 |
Actualizado : |
30/10/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
MORON, A.; GARCIA, A.; SAWCHIK, J.; COZZOLINO, D. |
Afiliación : |
DAVID ALEJANDRO MORON YACOEL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ADRIANA GARCIA LAMOTHE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JORGE SAWCHIK PINTOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DANIEL COZZOLINO GÓMEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Preliminary study on the use of near-infrared reflectance spectroscopy to assess nitrogen content of undried wheat plants. |
Fecha de publicación : |
2007 |
Fuente / Imprenta : |
Journal of the Science of Food and Agriculture, 15 January 2007, Volume 87, Issue 1, Pages 147-152. |
DOI : |
10.1002/jsfa.2691 |
Idioma : |
Inglés |
Notas : |
Article history:Received 11 August 2005/ Revised version received 16 January 2006/ Accepted 16 August 2006. |
Contenido : |
Abstract: Near-infrared reflectance (NIR) spectroscopy combined with chemometrics was used to assess nitrogen (N) and dry matter content (DM) and chlorophyll in whole-wheat plant (Triticum aestivum L). Whole-wheat plant samples (n = 245) were analysed by reference method and by visible and NIR spectroscopy, in fresh (n = 182) and dry (n = 63) presentations, respectively. Calibration equations were developed using partial least squares (PLS) and validated using full cross-validation (leave-one-out method). Coefficient of determination in calibration (R2CAL) and the standard error of cross-validation (SECV) for N content in fresh sample presentation, after second derivative, were 0.89 (SECV: 0.64%), 0.86 (SECV: 0.66%) and 0.82 (SECV: 0.74%) using the visible + NIR, NIR and
visible wavelength regions, respectively. Dry sample presentation gave better R2 CAL and SECV for N compared with fresh presentation (R2 CAL > 0.90, SECV <0.20%) using visible + NIR. The results demonstrated that NIR is a suitable method to assess N concentration in wheat plant using fresh samples (unground and undried). |
Palabras claves : |
DRY MATTER; FORRAJE NO SECO; MATERIA SECA; NEAR-INFRARED SPECTROSCOPY; NITROGEN; PARTIAL LEAST SQUARES; UNDRIED FORAGE; WHEAT. |
Thesagro : |
NIRS; TRIGO. |
Asunto categoría : |
F01 Cultivo |
Marc : |
LEADER 02083naa a2200301 a 4500 001 1049576 005 2019-10-30 008 2007 bl uuuu u00u1 u #d 024 7 $a10.1002/jsfa.2691$2DOI 100 1 $aMORON, A. 245 $aPreliminary study on the use of near-infrared reflectance spectroscopy to assess nitrogen content of undried wheat plants. 260 $c2007 500 $aArticle history:Received 11 August 2005/ Revised version received 16 January 2006/ Accepted 16 August 2006. 520 $aAbstract: Near-infrared reflectance (NIR) spectroscopy combined with chemometrics was used to assess nitrogen (N) and dry matter content (DM) and chlorophyll in whole-wheat plant (Triticum aestivum L). Whole-wheat plant samples (n = 245) were analysed by reference method and by visible and NIR spectroscopy, in fresh (n = 182) and dry (n = 63) presentations, respectively. Calibration equations were developed using partial least squares (PLS) and validated using full cross-validation (leave-one-out method). Coefficient of determination in calibration (R2CAL) and the standard error of cross-validation (SECV) for N content in fresh sample presentation, after second derivative, were 0.89 (SECV: 0.64%), 0.86 (SECV: 0.66%) and 0.82 (SECV: 0.74%) using the visible + NIR, NIR and visible wavelength regions, respectively. Dry sample presentation gave better R2 CAL and SECV for N compared with fresh presentation (R2 CAL > 0.90, SECV <0.20%) using visible + NIR. The results demonstrated that NIR is a suitable method to assess N concentration in wheat plant using fresh samples (unground and undried). 650 $aNIRS 650 $aTRIGO 653 $aDRY MATTER 653 $aFORRAJE NO SECO 653 $aMATERIA SECA 653 $aNEAR-INFRARED SPECTROSCOPY 653 $aNITROGEN 653 $aPARTIAL LEAST SQUARES 653 $aUNDRIED FORAGE 653 $aWHEAT 700 1 $aGARCIA, A. 700 1 $aSAWCHIK, J. 700 1 $aCOZZOLINO, D. 773 $tJournal of the Science of Food and Agriculture, 15 January 2007, Volume 87, Issue 1, Pages 147-152.
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