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Ed Stover and Greg McCollum

Huanglongbing is a very destructive citrus disease ( Bove, 2006 ) and is currently considered to be the greatest threat facing the Florida and U.S. citrus industry ( Gottwald, 2010 ). HLB is associated with a phloem-limited bacterium, CLas, and its

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Thomas H. Spreen, Jean-Paul Baldwin and Stephen H. Futch

fruit yields and smaller fruit sizes in Florida are another dimension associated with HLB and is not explicitly considered in this analysis. Concluding Remarks Huanglongbing is a relatively new disease to the Florida citrus industry. The industry appears

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Hong Chen, Greg McCollum, Elizabeth Baldwin and Jinhe Bai

Citrus HLB or greening is a devastating citrus disease associated with Candidatus Liberibacter asiaticus ( C Las). HLB has been reported in 40 countries in Asia, Africa, Australia, South America, and North America and was originally discovered in

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Robert C. Ebel, Said Hamido and Kelly T. Morgan

(without MAFT) models on in planta Cu concentrations, vegetative growth, and soil pH of Huanglongbing (HLB)-affected ‘Valencia’ trees treated with multiple foliar applications of Cu and with dependent variables measured over time. Fig. 1. Interaction of

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Douglas C. Whitaker, Mihai C. Giurcanu, Linda J. Young, Pedro Gonzalez, Ed Etxeberria, Pamela Roberts, Katherine Hendricks and Felix Roman

collected randomly throughout the state by two different personnel groups. HLB-symptomatic leaves from 714 sweet orange trees were gathered by commercial scouts and processed at the Florida Extension Huanglongbing Diagnostic Laboratory at the University of

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Godfrey P. Miles, Ed Stover, Chandrika Ramadugu, Manjunath L. Keremane and Richard F. Lee

.A.P. 2009 Differential reaction of citrus species in Malaysia to huanglongbing (HLB) disease using grafting method Amer. J. Agr. Biol. Sci. 4 32 38 Singerman, A. Useche, P. 2015 Impact of citrus greening on citrus operations in Florida. Aug. 2016. < http

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Said A. Hamido, Kelly T. Morgan and Davie M. Kadyampakeni

study during 2014 and 2015. Fig. 1. Effect of Huanglongbing (HLB) affected and nonaffected sweet orange trees (‘Hamlin’ and ‘Valencia’) on soil total available water content in the top soil [0–30 cm (11.8 inches)] in lysimeters under greenhouse

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Ed Stover, Robert G. Shatters Jr., Barrett Gruber, Prem Kumar and Gloria A. Moore

Huanglongbing is devastating the Florida citrus industry and is considered as the greatest threat to global citrus production ( Bové, 2006 ). In the United States, CLas is recognized as the pathogen causing HLB, and is vectored by the Asian citrus

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Naveen Kumar, Fnu Kiran and Ed Etxeberria

2A and B ). Fig. 2. Fibrous roots of 2-year-old ‘Valencia’ sweet orange trees on Swingle citrumelo rootstock. ( A ) Roots from a Huanglongbing (HLB)-uninfected control tree showing abundance of second- and third-order roots. ( B ) Root mass of a 2

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Sheng Li, Feng Wu, Yongping Duan, Ariel Singerman and Zhengfei Guan

recent years, however, the U.S. citrus industry has suffered major production losses due to citrus huanglongbing (HLB), or greening disease. The disease is caused by the bacterium Candidatus Liberibacter asiaticus ( C Las), and it is transmitted by an