2018
DOI: 10.1111/ppa.12865
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Spatiotemporal dynamics of citrus huanglongbing spread: a case study

Abstract: Citrus huanglongbing (HLB) is a severe disease caused by ‘Candidatus Liberibacter asiaticus’ and vectored by Diaphorina citri. In commercial orchards, where the disease is controlled by removal of trees with symptoms and by frequent vector control, epidemics of HLB are mostly driven by primary infections from inoculum sources external to the orchard. It has been previously shown that the density of D. citri populations is usually higher around the edges than the inner sections of HLB‐affected citrus orchards. … Show more

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Cited by 21 publications
(32 citation statements)
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“…More than 80% of insects are caught in the first 100-200 m of the orchard border (Boina et al 2009a;Sétamou and Bertels 2015), which explains the similar gradient of diseased trees from the edge of farms (Fig. 5a) (Bassanezi et al 2005;Gottwald et al 2008b;Gasparoto et al 2018). Thus, insecticide applications should be more frequent along this edge or on blocks located at the farm's periphery, and less frequent in the inner part of the farm that is less exposed to migrating psyllids.…”
Section: Insect Vector Control In Commercial Orchardsmentioning
confidence: 91%
“…More than 80% of insects are caught in the first 100-200 m of the orchard border (Boina et al 2009a;Sétamou and Bertels 2015), which explains the similar gradient of diseased trees from the edge of farms (Fig. 5a) (Bassanezi et al 2005;Gottwald et al 2008b;Gasparoto et al 2018). Thus, insecticide applications should be more frequent along this edge or on blocks located at the farm's periphery, and less frequent in the inner part of the farm that is less exposed to migrating psyllids.…”
Section: Insect Vector Control In Commercial Orchardsmentioning
confidence: 91%
“…Como visto no presente trabalho, uma pequena parte da população de adultos que chega aos pomares se dispersa para plantas localizadas no seu o interior, enquanto a maior parte se instala nas plantas localizadas nas primeiras dezenas de metros da borda. O parâmetro "b" do modelo potência inversa indica matematicamente a diluição na população do vetor que ocorre da periferia para o centro dos pomares, até algumas centenas de metros de distância, como observado por Gottwald et al (2009a) e Gasparoto et al ( 2018).…”
Section: Discussionunclassified
“…Plantas cítricas presentes em áreas residenciais, matas, canaviais, pastagens ou áreas de preservação permanente são mais importantes como fonte de inóculo de HLB do que pomares comerciais de laranja submetidos a rigoroso controle químico (Arruda, 2017). A importância de um controle mais intensivo do patógeno e do psilídeo no entorno dos pomares vem sendo bastante enfatizada atualmente (Bassanezi et al, 2013b;Bergamin Filho et al, 2016;Gasparoto et al, 2018). (Beloti et al, 2018), uma espécie de rutácea atrativa para D. citri, mas imune ao patógeno.…”
Section: Discussionunclassified
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