@Article{TavaresFioSeiGarBar:2020:EfStVi,
               author = "Tavares, Tiago Rodrigues and Fiorio, Peterson Ricardo and Seixas, 
                         Hugo Tameir{\~a}o and Garcia, Amparo Cisneiros and Barros, Pedro 
                         Paulo da Silva",
          affiliation = "{Universidade de S{\~a}o Paulo (USP)} and {Universidade de 
                         S{\~a}o Paulo (USP)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Universidade de S{\~a}o Paulo (USP)} and 
                         {Universidade Federal de Uberl{\^a}ndia (UFU)}",
                title = "Effects of storage on vis-NIR-SWIR reflectance spectra of Mombasa 
                         grass leaf samples",
              journal = "Ci{\^e}ncia Rural",
                 year = "2020",
               volume = "50",
               number = "3",
                pages = "e20190587",
             keywords = "diffuse reflectance spectroscopy, hyperspectral sensors, forage, 
                         precision agriculture, espectroscopia de reflect{\^a}ncia difusa, 
                         sensores hiperespectrais, forragem, agricultura de 
                         precis{\~a}o.",
             abstract = "Vis-NIR-SWIR reflectance spectra of leaf samples, collected in the 
                         laboratory, allow the calibration of predictive models to quantify 
                         their physicochemical attributes in a practical manner and without 
                         producing chemical residues. This technique should enable the 
                         development of management strategies for intensification of 
                         pasture use. However, spectral analysis performed in the 
                         laboratory may be affected by the deterioration of plant material 
                         during transport from the field to the lab, so storage methods are 
                         necessary. This research aimed to evaluate the effects of 
                         different storage methods on the spectral response of Mombasa 
                         grass leaves. Three methods were evaluated: (i) artificially 
                         refrigerated environment, (ii) humid environment, and (iii) 
                         without microenvironment control. These methods were tested in 
                         five different storage times: 2 hours, 4 hours, 8 hours, 24 hours 
                         and 48 hours. The spectral behavior of the leaves still inserted 
                         in the plant was used as a quality reference. Results showed 
                         notable changes at the earliest storage time for the treatment 
                         without microenvironment control. Both methods with 
                         microenvironment control stabilized the occurrence of spectral 
                         changes over 48 hours of the samples storage, thus both were 
                         suggested for this species. RESUMO: Espectros de reflect{\^a}ncia 
                         vis-NIR-SWIR de amostras foliares, coletados em laborat{\'o}rio, 
                         permitem a calibra{\c{c}}{\~a}o de modelos preditivos para 
                         quantifica{\c{c}}{\~a}o de seus atributos 
                         f{\'{\i}}sico-qu{\'{\i}}micos de maneira pr{\'a}tica e sem 
                         produ{\c{c}}{\~a}o de res{\'{\i}}duos qu{\'{\i}}micos. Esta 
                         t{\'e}cnica permite o desenvolvimento de estrat{\'e}gias de 
                         manejo para a intensifica{\c{c}}{\~a}o do uso de pastagens. 
                         Contudo, an{\'a}lises espectrais realizadas em laborat{\'o}rio 
                         podem ser afetadas pela deteriora{\c{c}}{\~a}o do material 
                         vegetal durante o transporte do campo ao laborat{\'o}rio, 
                         fazendo-se necess{\'a}rio a utiliza{\c{c}}{\~a}o de 
                         m{\'e}todos de armazenamento. O presente trabalho objetivou 
                         avaliar o efeito de diferentes m{\'e}todos de armazenamento na 
                         resposta espectral de folhas de capim Momba{\c{c}}a. Avaliou-se 
                         tr{\^e}s m{\'e}todos: (i) ambiente refrigerado artificialmente; 
                         (ii) ambiente {\'u}mido; e (iii) ao ar livre, sem controle do 
                         microambiente; assim como, cinco diferentes tempos de 
                         armazenamento: 2 horas, 4 horas, 8 horas, 24 horas e 48 horas. O 
                         comportamento espectral das folhas ainda inseridas na planta foi 
                         utilizado como refer{\^e}ncia de qualidade. Os resultados 
                         mostraram altera{\c{c}}{\~o}es pronunciadas para o armazenamento 
                         ao ar livre j{\'a} nos primeiros intervalos de tempo. Ambos 
                         m{\'e}todos com controle de microambiente permitiram estabilizar 
                         a ocorr{\^e}ncia de altera{\c{c}}{\~o}es espectrais ao longo 
                         das 48h de armazenamento das amostras, sendo ambos sugeridos para 
                         esta esp{\'e}cie.",
                  doi = "10.1590/0103-8478cr20190587",
                  url = "http://dx.doi.org/10.1590/0103-8478cr20190587",
                 issn = "0103-8478",
             language = "en",
           targetfile = "tavares_effects.pdf",
        urlaccessdate = "27 abr. 2024"
}