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| Meneses,Elizabeth; Arango,Gloria; Correa,Guillermo; Ruíz,Orlando; Vargas,Luis Gonzalo; Pérez,Juan Carlos. |
| La selección de métodos apropiados para muestreo y análisis es un aspecto importante en el estudio de plagas subterráneas. El conocimiento de su biología, depende del uso de herramientas sensibles para su detección en el ambiente complejo del suelo y las raíces. Recientemente se ha propuesto el uso de espectroscopia infrarroja cercana (conocida como NIR, por su sigla en inglés) para el diagnóstico fitosanitario no destructivo en cultivos, aprovechando la manifestación de propiedades ópticas únicas para cada grupo de plantas y organismos. El objetivo de este trabajo fue evaluar el uso de espectroscopía NIR en muestras de hojas y suelo rizosférico, para detectar la presencia del insecto subterráneo Eurhizococcus colombianus en cultivos de mora (Rubus glaucus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Detección de infestación; Muestreos no destructivos; NIR; Perla de tierra colombiana; Rubus glaucus Benth. |
| Ano: 2015 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122015000300012 |
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| Rossato,Roberta; Prete,Cássio Egídio Cavenaghi; Castro,César de; Tomm,Gilberto Omar; Leite,Rodrigo Santos; Mandarino,José Marcos Gontijo; Araújo,Pedro Mário de; Carvalho,Claudio Guilherme Portela de. |
| The objective of this work was to establish a calibration equation and to estimate the efficiency of near-infrared reflectance (NIR) spectroscopy for evaluating rapeseed oil content in Southern Brazil. Spectral data from 124 half-sib families were correlated with oil contents determined by the chemical method. The accuracy of the equation was verified by coefficient of determination (R²) of 0.92, error of calibration (SEC) of 0.78, and error of performance (SEP) of 1.22. The oil content of ten genotypes, which were not included in the calibration with NIR, was similar to the one obtained by the standard chemical method. NIR spectroscopy is adequate to differentiate oil content of rapeseed genotypes. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica napus; NIR; Oilseed; Soxhlet; Spectral analysis. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001200010 |
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| Garcia,Jaime; Cozzolino,Daniel. |
| The objective of the study was to evaluate the potential of near infrared reflectance (NIR) spectroscopy as a rapid method to predict the chemical composition of forage in broad-based calibration models. In total, 650 samples representing a wide range of chemical characteristics, phenological states and origins were scanned in an NIR instrument. The coefficient of determination in calibration (R²) and standard error in cross validation (SECV) for the NIR calibration models were as follows: dry matter 0.95 (SECV: 0.7%), crude protein 0.98 (SECV: 0.98%), ash 0.90 (SECV: 0.99%), in vitro organic matter digestibility 0.90 (SECV: 3.6%), acid detergent fiber 0.95 (SECV: 2.0%) and neutral detergent fiber 0.86 (SECV: 5.4%) on a dry matter basis. The results... |
| Tipo: Journal article |
Palavras-chave: Forage quality; NIR; Chemical composition; Near infrared analysis. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072006000100005 |
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| Cozzolino,Daniel; Delucchi,Inés; Kholi,Moham; Vázquez,Daniel. |
| The aim of this work was to explore the potential of visible (Vis) and near infrared reflectance (NIR) spectroscopy to measure quality characteristics in whole grain wheat (Triticum aestivum L.) as a tool in breeding programs. A total of 100 samples were analyzed by the reference methods for crude protein (CP), wet gluten (WG) and sodium dodecyl sulfate (SDS) sedimentation test. Whole grain samples were scanned in a NIR monochromator instrument (400-2500 nm) in reflectance. Partial least squares (PLS) were used to develop calibration equations for the quality characteristics in whole wheat. Calibration models were validated using an independent set of samples (n = 50) randomly selected from the population set. The uncertainty of the PLS models was... |
| Tipo: Journal article |
Palavras-chave: Whole wheat; NIR; Protein; Wet gluten; Grain quality; SDS. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072006000400005 |
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