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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effects of storage on vis-NIR-SWIR reflectance spectra of Mombasa grass leaf samples

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Author(s):
Tiago Rodrigues Tavares [1] ; Peterson Ricardo Fiorio [2] ; Hugo Tameirão Seixas [3] ; Amparo Cisneiros Garcia [4] ; Pedro Paulo da Silva Barros [5]
Total Authors: 5
Affiliation:
[1] Universidade de São Paulo (USP). Departamento de Engenharia de Biossistemas. Escola Superior de Agricultura “Luiz de Queiroz” - Brasil
[2] Universidade de São Paulo (USP). Departamento de Engenharia de Biossistemas. Escola Superior de Agricultura “Luiz de Queiroz” - Brasil
[3] Instituto Nacional de Pesquisas Espaciais (INPE). Departamento de Sensoriamento Remoto - Brasil
[4] Universidade de São Paulo (USP). Departamento de Engenharia de Biossistemas. Escola Superior de Agricultura “Luiz de Queiroz” - Brasil
[5] Universidade Federal de Uberlândia (UFU) - Brasil
Total Affiliations: 5
Document type: Journal article
Source: Ciência Rural; v. 50, n. 3 2020-03-13.
Abstract

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. (AU)

FAPESP's process: 13/22435-9 - Hyperspectral data use for prediction of leaf nitrogen content in sugarcane
Grantee:Peterson Ricardo Fiorio
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants