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	Provedor de dados CIGR Journal (2) Autor Ehsani, Reza (2) Albrigo, L. G. (1) Campoy, J. M. (1) Khot, L. R. (1) Neto, J. C. (1) Sankaran, Sindhuja (1) Swen, W. (1) Wellington, C. (1) Mais... Palavra-chave Adjustable air-assistance (1) Agricultural engineering Disease detection (1) Airblast sprayer (1) Citrus. (1) Classification (1) Crosswind (1) K-nearest neighbor (1) Quadratic discriminant analysis (1) Spray coverage (1) USA. (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2014 (1) 2013 (1) País China (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Comparison of visible-near infrared and mid-infrared spectroscopy for classification of Huanglongbing and citrus canker infected leaves CIGR Journal Sankaran, Sindhuja; Ehsani, Reza. In this study, visible-near infrared spectroscopy and mid-infrared spectroscopy were compared to evaluate their applicability in classifying citrus leaves infected with canker and HLB from healthy citrus leaves.  The visible-near infrared spectra in the range 350-2,500 nm and mid-infrared spectra in the range of 5.15-10.72 µm were collected from healthy and diseased (canker, HLB) leaves.  Following the spectral data collection, the data were preprocessed and classification was performed using two classifiers, quadratic discriminant analysis (QDA) and k-nearest neighbor (kNN).  The classifiers (QDA, kNN) resulted in an average overall and individual class classification accuracy of about 90% or more.  Mid-infrared spectroscopy provided high classification... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural engineering Disease detection; Classification; Quadratic discriminant analysis; K-nearest neighbor; USA.. Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2469 Variable rate spraying in varied micro-meteorological conditions CIGR Journal Khot, L. R.; Ehsani, Reza; Albrigo, L. G.; Swen, W.; Neto, J. C.; Campoy, J. M.; Wellington, C.. This study evaluated effects of crosswind on the variable rate sprayer application treatments spray coverage and deposition on different citrus canopy sizes.  The axial-fan airblast sprayer retrofitted with variable liquid- and air-assist rates was field-tested with different crosswind conditions on small (about 2 m tall and < 1.5 m wide) and medium-sized (about 3 m tall and < 2.5 m wide) canopies.  Crosswinds of 1.3, 2.7, and 4.0 ms-1 on the canopies being sprayed were generated using the stationary conical air shaker as the air blower unit.  Water sensitive papers (WSPs) were used to collect droplet deposits and image processing software was used to analyze the WSPs scanned at 600 dpi.  Percent spray coverage on the WSPs was found to be one of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Airblast sprayer; Adjustable air-assistance; Crosswind; Spray coverage; Citrus.. Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2738 Registros recuperados: 2 Primeira ... 1 ... Última

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