Data/hora: 07/06/2024 23:11:43

Biblioteca(s): | Embrapa Trigo; Embrapa Unidades Centrais.
Data corrente: | 17/11/2017
Data da última atualização: | 17/08/2021
Autoria: | PINTO, D. G.; FONTANA, D. C.; DALMAGO, G. A.; FOCHESATTO, E.; VICARI, M. B.; BREMM, C.; CUNHA, G. R. da; GOUVEA, J. A. de; SANTI, A.
Afiliação: | Daniele Gutterres Pinto, Departamento de Plantas Forrageiras e Agrometeorologia/Universidade Federal do Rio Grande do Sul; Denise Cybis Fontana, Departamento de Plantas Forrageiras e Agrometeorologia/Universidade Federal do Rio Grande do Sul; GENEI ANTONIO DALMAGO, CNPT; Elizandro Fochesatto, Departamento de Agronomia/Faculdades Integradas do Vale do Iguaçu; Matheus Boni Vicari, Department of Geography/University College London; Carolina Bremm, Fundação Estadual de Pesquisa Agropecuária - Sede/Divisão de Pesquisa e Inovação Tecnológica; GILBERTO ROCCA DA CUNHA, CNPT; JORGE ALBERTO DE GOUVEA, CNPT; ANDERSON SANTI, CNPT.
Título: | Correlations between spectral and biophysical data obtained in canola canopy cultivated in the subtropical region of Brazil.
Ano de publicação: | 2017
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 10, p. 825-832, out. 2017.
Idioma: | Inglês
Notas: | Título em português Correlações entre dados espectrais e biofísicos em dossel de canola cultivada na região subtropical do Brasil.
Conteúdo: | The objective of this work was to identify the spectral bands, vegetation indices, and periods of the canola crop season in which the correlation between spectral data and biophysical indicators (total shoot dry matter and grain yield) is most significant. The experiment was carried out during the 2013 and 2014 crop seasons at Embrapa Trigo, in the state of Rio Grande do Sul, Brazil. A randomized complete block design was used, with four replicates, and the treatments consisted of five doses of nitrogen topdressing. Plant dry matter, grain yield, and phenology were measured. The canola spectral response was evaluated by measuring the canola canopy reflectance using a spectroradiometer, and, with this data, the SR, NDVI, EVI, SAVI, and GNDVI vegetation indices were determined. Pearson?s correlations between the spectral and biophysical variables of canola showed that the red (620 to 670 nm) and near-infrared (841 to 876 nm) bands were the best to estimate the dry matter. The vegetative period is the most indicated to obtain the most significant correlations for canola. All the used vegetation indices are adequate for estimating the dry matter and grain yield of canola.
Palavras-Chave: | Espectrorradiometria; EVI; GNDVI; NDVI; SAVI; Spectroradiometry.
Thesagro: | Brassica Napus.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/166910/1/Correlations-between-spectral.pdf
Registro original: | Embrapa Trigo (CNPT)

Exemplares:

AI-SEDE - (61894-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CNPT - (44277-1) - UPC - AP - DD -  -  -  - DIS