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Automatic classification of soybean diseases based on digital images of leaf symptoms. Author(s): BARBEDO, J. G. A.; GODOY, C. V. ABSTRACT; This paper presents an algorithm for automatic classification of diseases that produce symptoms in soybean leaves. The algorithm is based on digital image processing techniques and on a modi... ... Repository: BDPA Publication year: 2015
A method for counting and classifying aphids using computer vision. Author(s): LINS, E. A.; RODRIGUEZ, J. P. M.; SCOLOSKI, S. I.; PIVATO, J.; LIMA, M. B.; FERNANDES, J. M. C.; PEREIRA, P. R. V. da S.; LAU, D.; RIEDER, R. Aphids are insects that attack crops and cause damage directly, by consuming the sap of plants, and indirectly,by vectoring microorganisms that can cause diseases. Cereal crops are hosts for many aphi... ... Repository: BDPA Publication year: 2020
Streamlined approaches for image classification using principal component analysis and hierarchical clustering of extrudates from coffee and sorghum blends. Author(s): HIDALGO CHÁVEZ, D. W.; SILVA, F. L. C. DA; PINTO, R. V.; CARVALHO, C. W. P. de; FREITAS-SILVA, O. This article describes simple methods to group images including principal component analysis (PCA) and hierarchical clustering of principal components (HCPC). Images of expanded and low expanded extru... ... Repository: BDPA Publication year: 2023
Evaluations of the effects of candidatus liberibacter asiaticus on inoculated citrus plants using laser-induced breakdown spectroscopy and chemometric tools. Author(s): PEREIRA, F. M. V.; MILORI, D. M. B. P.; VENANCIO, A. L.; RUSSO, M. de S. T.; MARTINS, P. K.; FREITAS-ASTÚA, J. This analytical study investigated the organic and inorganic constituents of healthy leaves and leaves inoculated with Candidatus Liberibacter asiaticus (CLas) of citrus plants. The bacteria CLas is o... ... Repository: BDPA Publication year: 2010
Leaf hyperspectral reflectance as a potential tool to detect diseases associated with vineyard decline. Author(s): JUNGES, A. H.; ALMANÇA, M. A. K.; FAJARDO, T. V. M.; DUCATI, J. R. Grape production in the Serra Gaúcha region, south of Brazil, is severily constrained by several diseases such as the decline and death syndrome caused grapevine trunk (fungal) diseases (GTDs) and the... ... Repository: BDPA Publication year: 2020
Tipos de lesão de brusone em trigo. Author(s): TORRES, G. A. M.; SOTO GONZÁLES, H. H.; WEBBER, N. F.; SCHERER, H. M. Repository: BDPA Publication year: 2015
Reação à ferrugem da folha de genótipos de trigo indicados para cultivo no Rio Grande do Sul, em Santa Catarina e no Paraná em 2002. Author(s): CHAVES, M. S.; WESP, C. de L.; SCHEEREN, P. L.; DEL DUCA, L. de J. A.; SÓ e SILVA, M. Repository: BDPA Publication year: 2006
Reação à ferrugem da folha de genótipos de trigo indicados para cultivo no Rio Grande do Sul, em Santa Catarina e no Paraná, em 2003. Author(s): CHAVES, M. S.; WESP, C. de L.; SCHEEREN, P. L.; DEL DUCA, L. de J. A.; SÓ e SILVA, M. Repository: BDPA Publication year: 2006
Reação à ferrugem da folha de genótipos de trigo indicados para cultivo no Rio Grande do Sul, Santa Catarina e Paraná em 2004. Author(s): CHAVES, M. S.; WESP, C. de L.; SCHEEREN, P. L.; DEL DUCA, L. de J. A.; SÓ e SILVA, M.; CAIERÃO, E. Repository: BDPA Publication year: 2005
Soil classification from visible/near-infrared diffuse reflectance spectra at multiple depths. Author(s): VASQUES, G. de M.; DEMATTE, J. A. M.; LOPEZ, L. R.; TERRA, F. da S. Abstract : Visible/near-infrared diffuse reflectance spectroscopy (VNIRS) offers an alternative to conventional analytical methods to estimate various soil attributes. However, the use of VNIRS in soi... ... Repository: BDPA Publication year: 2011

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