Journal
BIOSYSTEMS ENGINEERING
Volume 144, Issue -, Pages 133-144Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.biosystemseng.2016.02.010
Keywords
Early diagnosis; Laser induced fluorescence spectroscopy; Huanglongbing (HLB); Citrus variegated chlorosis (CVC); Phytosanitary control; Citrus diseases
Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (Fapesp)
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Over the last few years, citrus production has been threatened by diseases and plagues, especially Huanglongbing (HLB). Due to the long asymptomatic period, the most important and efficient tool for HLB management is early detection, which enables fast decisions to protect the farm. In this sense, a new methodology using a portable laser-induced fluorescence spectroscopy (LIPS) system and statistical tools was developed. It is capable of identifying not only symptomatic HLB leaves in the field, but also asymptomatic HLB trees and symptomatic citrus variegated chlorosis (CVC) trees. The differentiation reaches accuracy better than 90% and provides the ability of detecting an asymptomatic diseased tree 21 months before the symptoms appear, results supported by quantitative polymerase chain reaction (qPCR) analysis. (C) 2016 IAgrE. Published by Elsevier Ltd. All rights reserved.
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