PREDICTION OF PHENOLOGICAL STATUS OF SUGAR CANE BY MULTISPECTRAL IMAGES OF ORBITAL SENSOR PASSIVE

DOCUMENTAÇÃO

Tema: Geotecnologia

Acessos neste artigo: 3


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AUTORIA

Valéria Lima Da Silva , Rogerio Alves De Oliveira , Egas Jose Armando , Rosilene Oliveira Dos Santos , Anamari Viegas De Araujo Motomiya , Carlos Cesar Silva Jardim

ABSTRACT
The use of sensors to evaluate plants is dated from the first images made available in 1964. In order to use the images in the character of temporal studies, the conversion of Digital number into absolute reflectance, denominated as Reflectance at the top of the atmosphere of the observed scene, was done the equation provided by USGS Explorer is used. The objective of this study was to evaluate the spectral bands in the prediction of the phenological stages of sugarcane. Descriptive statistics, variance analysis and regression were used to determine the properties of the spectrum reflected in the sugarcane in the regrowth phase. The spectral bands were evaluated separately to obtain the regression model that demonstrated the vegetative development of the crop as a function of days after regrowth. The temperature requirement for the development of sugarcane is divided into the vegetative phases of the crop, requiring 200 ADD to complete the stage of establishment of the crop, 800 days accumulated days to reach the maximum vegetative potential, and 1600 DD to start maturation. These values can vary appreciably according to techniques of standardization of maturation with the application of hormonal regulators. The spectral bands evaluated showed significant determination functions for the maximum biomass production that occurred at 10 days after the pigment saturation of the spectral bands

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Comentários

Excelente trabalho! Sugiro deixar as figuras no mesmo idioma do texto (inglês).

Foto do Usuário Alvaro José Reis Ramos 09-02-2021 12:50:35

Parabéns pelo trabalho, muito bem feito e bem escrito. Recomendo padronizar o texto às figuras, deixando no mesmo idioma, também é interessante indicar o que seria o "peri II" citado no primeiro parágrafo dos resultados, pois este não aparece no restante do texto. Outro ponto seria a padronização da fonte de "Figuras" uniformizando com ou sem o uso de negrito. Também seria interessante indicar o site de obtenção das informações de precipitação na metodologia. Ademais, parabéns novamente pelo trabalho.