@InProceedings{MoreiraRudAlvFreSal:2004:CoCoEs,
               author = "Moreira, Mauricio Alves and Rudorff, Bernado Friedrich Theodor and 
                         Alvarenga, B. S. and Freitas, J. G. and Salomon, M. V",
          affiliation = "Instituto Nacional de Pesquisas Espaciais, Divis{\~a}o de 
                         Sensoriamento Remoto (INPE, DSR)",
                title = "Correla{\c{c}}{\~a}o do comportamento espectral, NDVI e SAVI com 
                         vari{\'a}veis biof{\'{\i}}sicas de quatro gen{\'o}tipos de 
                         trigo sob diferentes n{\'{\i}}veis de aduba{\c{c}}{\~a}o 
                         nitrogenada",
            booktitle = "Mem{\'o}rias",
                 year = "2004",
         organization = "Simp{\'o}sio Latino-Americano de Percepci{\'o}n Remota, 11.",
             keywords = "radiometria de campo, comportamento espectral, profundidade de 
                         banda, cultura do trigo, field radiometry, spectral behavior, 
                         absortion band for chlorophyll, wheat crop.",
             abstract = "Uma varia{\c{c}}{\~a}o significativa na produ{\c{c}}{\~a}o de 
                         trigo {\'e} observada em condi{\c{c}}{\~o}es de campo devido 
                         aos efeitos clim{\'a}ticos, gen{\'e}ticos e agron{\^o}micos que 
                         nem sempre est{\~a}o relacionados com a informa{\c{c}}{\~a}o 
                         contida nas imagens de sat{\'e}lites de sensoriamento remoto. O 
                         avan{\c{c}}o tecnol{\'o}gico, na {\'a}rea de sensoriamento 
                         remoto, tem propiciado o surgimento de radi{\^o}metros 
                         hiperespectrais que operam na faixa de comprimento de onda de 400 
                         a 2500 nm, o que possibilita obter medidas de reflect{\^a}ncia de 
                         doss{\'e}is agr{\'{\i}}colas em condi{\c{c}}{\~o}es de campo 
                         a fim de permitir um melhor entendimento sobre as 
                         rela{\c{c}}{\~o}es entre o comportamento espectral e 
                         vari{\'a}veis biof{\'{\i}}sicas de culturas agr{\'{\i}}colas. 
                         Neste sentido, foi instalado um experimento, na fazenda 
                         experimental do Instituto Agron{\^o}mico em Campinas-SP, Brasil, 
                         com quatro gen{\'o}tipos de trigo, submetidos a cinco doses de 
                         nitrog{\^e}nio (0, 30, 60, 90 e 120 kg ha-1). O objetivo da 
                         pesquisa foi estudar o comportamento espectral do trigo por meio 
                         de simula{\c{c}}{\~a}o das bandas do sensor TM do Landsat-5 e 
                         dos {\'{\i}}ndices de vegeta{\c{c}}{\~a}o NDVI e SAVI. 
                         Al{\'e}m disso, fez-se uma an{\'a}lise da correla{\c{c}}{\~a}o 
                         da radia{\c{c}}{\~a}o fotossinteticamente ativa absorvida 
                         acumulada ( e da efici{\^e}ncia do uso da radia{\c{c}}{\~a}o 
                         com a produ{\c{c}}{\~a}o de gr{\~a}o (\G) e a altura 
                         das plantas. As medidas radiom{\'e}tricas foram obtidas com o 
                         radi{\^o}metro FieldSpec FR PRO, que opera na faixa de 
                         comprimento de onda de 350 a 2500 nm. Os resultados mostraram que 
                         n{\~a}o houve diferen{\c{c}}as significativas no comportamento 
                         espectral dos gen{\'o}tipos. No entanto, a an{\'a}lise de 
                         profundidade de banda da absor{\c{c}}{\~a}o da clorofila mostrou 
                         que houve diferen{\c{c}}a significativa para o comprimento de 
                         onda de 675 nm, o que justificou a diferen{\c{c}}a observada na e 
                         na \G. ABSTRACT A significant variation in wheat 
                         production is observed under field conditions due to climatic, 
                         genetic and agronomic effects that are not always related to 
                         information contained in remote sensing satellite images. 
                         Technological advancement in the remote sensing area has promoted 
                         the appearance of hiperspectral radiometers operating in the 
                         wavelength range of 400 to 2,500 nm and made it feasible to obtain 
                         reflectance measurements of agricultural canopies under field 
                         conditions in order to allow a better understanding of the 
                         relationship between spectral behavior and biophysical variables 
                         of agricultural crops. Thus, a field experiment was carried out in 
                         the experimental farm of the Agronomic Institute at Campinas, 
                         S{\~a}o Paulo State, Brazil, with four wheat genotypes, submitted 
                         to five Nitrogen doses (0, 30, 60, 90 and 120 kg ha-1). The 
                         objective of this research was to study the spectral behavior of 
                         wheat through the band simulation of Landsat-5 TM sensor and 
                         vegetation indices NDVI and SAVI. Furthermore, a correlation 
                         analysis was performed with the accumulated absorbed 
                         photosynthetically active radiation and the radiation use 
                         efficiency (\G) with grain yield and plant height. The 
                         radiometric measurements were acquired with the FieldSpec FR PRO 
                         that operates in the wavelength range of 350 to 2,500 nm. The 
                         results showed that no significant differences were observed for 
                         the spectral behavior of the genotypes. However, the analysis of 
                         the absotion band for chlorophyll absorption showed a significant 
                         difference for the wavelength of 675 nm, which explained the 
                         difference observed for and for (\G).",
  conference-location = "Santiago",
      conference-year = "22-26 nov.",
           copyholder = "SID/SCD",
             language = "pt",
           targetfile = "Moreira et Santos et Souza et Fenili.pdf",
        urlaccessdate = "13 maio 2024"
}