Espectroscopia de reflectancia difusa por infrarrojo cercano (NIR) para la Comparison of ultraviolet, visible, and near infrared sensing for soil phosphorus. . The spectrum-based learner: A new local approach for modeling soil vis-NIR. El uso de las espectroscopía de reflectancia difusa y de técnicas estadísticas and, in most of the cases, over-lapping and masking VIS-NIR spectral responses. studies have also been carried out on the ultraviolet band (UV) (Bogrekci and. em plantas por espectroscopia de reflectância difusa no infravermelho próximo . UV-VIS-NIR Varian, modelo Cary-5G, do Instituto de Química da UNICAMP.
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The characterization of soil properties through laboratory analysis is an essential part of the diagnosis of the potential use of lands and their fertility.
Conventional chemical analyzes are expensive and time consuming, hampering the adoption of crop management technologies, such as precision agriculture. In the A and B horizons, 1, samples were collected in order to determine the total carbon TC and dfiusa TN contents, obtain the NIR spectral curve, and build models using partial least squares regression.
The use of diffuse reflectance spectroscopy and statistical techniques allowed for the quantification of the TC with adequate models of prediction based on a small number of samples, an residual prediction deviation RPD greater than 2.
For TN, models with a good level of prediction were not obtained. The results based on the NIR models were able to be integrated directly into the geostatistical evaluations, obtaining similar digital maps from the observed and predicted TC. The use of pedometric techniques showed promising results for these soils and constitutes a basis for the development of this area of research on soil science in Colombia.
Comparison of ultraviolet, visible, and near infrared sensing for soil phosphorus.
INFLUENCE OF THERMAL TREATMENT ON THE PHOTOCATALYST NANOCOMPOSITE ZnO/TiO2
Near-infrared reflectance spectroscopy-principal components regression analysis of soil properties. Effect of agricultural intervention on difuas spatial variability of some soils chemical properties in the eastern plains of Colombia.
Field-scale variability of soil properties in Central Iowa Soils. Van Raij, and M.
Espectroscopia de reflectancia difusa uv-vis pdf download
Variability of soil analysis in commercial laboratories: Universidad Jorge Tadeo Lozano, Bogota. Potential of near-infrared reflectance spectroscopy and chemometrics to predict soil organic carbon fractions. Spatial variability of an Alfisol cultivated with sugarcane.
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Spectrochimica Acta Part B: Atomic Spectroscopy, p. Design and evaluation of a cloud-based ultra-portable NIRS system for sweet cherry quality detection. Computers and Electronics in Agriculture, p. Journal of Imaging3 1p. Creado a partir de la obra en http: Camacho-Tamayo, Yolanda Rubiano S. Statistics for spatial data. NIR News 13 6 ,