%0 Journal Article
%4 sid.inpe.br/mtc-m21b/2015/05.15.19.03
%2 sid.inpe.br/mtc-m21b/2015/05.15.19.03.39
%@issn 1980-5098
%@issn 0103-9954
%T Spectral behavior of Eucalyptus globulus (Labill.) leaves attacked by Mycosphaerella spp. in regions of visible and infrared near the electromagnetic spectrum
%D 2015
%8 jan./mar.
%9 journal article
%A Lippert, Diogo Belmonte,
%A Benedett, Ana Caroline Paim,
%A Muniz, Marlove Fatima Briao,
%A Pereira, Rudiney Soares,
%A Biernaski Junior, Carlos Alberto,
%A Finkenauer, Elder,
%A Berra, Elias Fernando,
%@affiliation Universidade Federal de Santa Maria (UFSM)
%@affiliation Universidade Federal de Santa Maria (UFSM)
%@affiliation Universidade Federal de Santa Maria (UFSM)
%@affiliation Universidade Federal de Santa Maria (UFSM)
%@affiliation Universidade Federal de Santa Maria (UFSM)
%@affiliation Fibria Celulos e Papel
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@electronicmailaddress diogolippert@gmail.com
%@electronicmailaddress anacaroline@politecnico.ufsm.br
%@electronicmailaddress marlove@smail.ufsm.br
%@electronicmailaddress rudiney.s.pereira@gmail.com
%@electronicmailaddress carlosbiernaski@hotmail.com
%@electronicmailaddress elder.finkenuer@yahoo.com.br
%@electronicmailaddress eliasberra@yahoo.com.br
%B Ciencia Florestal
%V 25
%N 1
%P 211-219
%K epidemiology, severity level, spectroradiometry, leaf reflectance.
%X The study aims to analyze the spectral behavior of leaves of Eucalyptus globulus attacked in four different severity levels by Mycosphaerella spp. in different positions in the canopy of the tree in the four seasons, considering two regions of the electromagnetic spectrum: visible and near infrared. The plant material was collected in all seasons, in different positions in the tree (base, middle and top of the canopy extract). In the laboratory, leaves were classified into four levels of severity (healthy, little, medium and heavy fire) and then made measurements of spectral reflectance measured with a spectroradiometer. The spectral behavior of Eucalyptus globules leaves is characteristic according to the severity degree of the disease, differing primarily in the other high levels of infection by Mycosphaerella spp. and differ mainly of healthy leaves and leaves which are little attacked, in both regions of the electromagnetic spectrum, this behavior occurs for different treetop positions and climate seasons, varying the amount of reflected energy. It is concluded that the reflectance of the Eucalyptus globules leaves attacked by Mycosphaerella spp. differs according to the position in the tree crown and the weather station when they were collected and to the advanced levels of disease severity.
%@language en