Trial to determine if salicylic acid and/or K-phite on young citrus trees grafted with HLB-infected budwood could prevent transmission of the bacteria

Ryan Atwood, R. H. Brlansky


A trial was performed evaluating the effect of salicylic acid and K-phite on young greenhouse-grown huanglongbing- (HLB) infected citrus trees. The product K-phite was applied at two different treatment rates both to the soil through a drench and as a foliar spray. The product also was used in conjunction with salicylic acid at two different rates. Treatments were administered on fi ve dates over a 7-month period. Six months after inoculation, 43% of the previously uninfected trees were HLB positive and 8% questionable according to PCR results. There were no differences between treatments or the untreated control—all were equally infected.

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283