Citrus Research & Technology
Citrus Research & Technology

The situation and actions of the state of Minas Gerais facing huanglongbing

Maria Eunice Assis Castro, Airton Rigueira Bezerra, Walderi Alderman Leite, Waldemar Mundin Filho & Nataniel Diniz Nogueira

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Huanglongbing (HLB) is considered one of the most severe and destructive diseases of citrus worlwide. In the state of Minas Gerais, Brazil, the first outbreak was confirmed in 2005, in the county of Monte Santo de Minas, southern of the State. News outbreaks were identified in Carmo do Rio Claro and Guaxupé in 2007 and 2009, respectively. Recently, the disease was detected in Frutal, in the “Triângulo Mineiro” region. The management of HLB is based on planting healthy nursery-trees, controlling the psyllid vector, and inspecting and eradicating symptomatic plants. The Department of Plant Health Protection (Gerência de Defesa Sanitária Vegetal – GDV) from Instituto Mineiro de Agropecuária – IMA has made efforts to prevent the introduction and spread of pests that may damage citrus cultivation in the State of Minas Gerais. To discipline the production, entry, transit and trade of seedlings, rootstocks, budwood, pulp pellet and fruits, the GVD adopts laws based in two general concepts of plant disease control: exclusion and eradication. In order to fulfill its mission, the IMA is in constant alert, working in monitoring plant healthy through phytosanitary certification of origin, the registers of producing properties of plant materials, plant surveys, and monitoring of production, transit and trade of plant materials. The procedures for production of healthy nursery-trees, inspection and eradication of infected plants by HLB are described in detail.


citrus, plant diseases, plant pests, Candidatus Liberibacter spp., greening, plant health protection.
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