Detection of soybean rust contamination in soy leaves by FTIR photoacoustic spectroscopy |
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Authors: | L HC Andrade P G Freitas B G Mantovani M S Figueiredo R A Lima S M Lima M AS Rangel R M Mussury |
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Institution: | (1) Grupo de Espectroscopia óptica e Fototérmica, Universidade Estadual de Mato Grosso do Sul, CP 351, CEP, 79804-970 Dourados, MS, Brazil;(2) Empresa Brasileira de Pesquisa Agropecuária, Centro de Pesquisa Agropecuária do Oeste, Dourados, MS, Brazil;(3) Centro Universitário da Grande Dourados, Unigran, Dourados, MS, Brazil |
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Abstract: | In this work the Photoacoustic Infrared
Spectroscopy from 4000 to 400 cm-1 was applied, by the first time to
our knowledge, to diagnostic the soy bean rust or Asian rust contamination
on soy leafs caused by the fungi Phakopsora pachyrhizi. The obtained results shown that a
premature, fast and precise diagnosis can be achieved using this technique
before it can be detect by the conventional visual method. The early
identification of the fungi infection avoid massive lost in the soy
production and decrease the intense use of fungicide whose is necessary when
the infection is in advanced stagy. |
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Keywords: | |
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