The ultimate utility of airborne detection and mapping of HLB infection depends to some degree on the time lag between HLB infection and the development of a detectable reflectance signature. In Year 2 (FY 2014) JPL will participate in the longitudinal study proposed to CRB by UC Davis. UC Davis will provide citrus specimens, some of which will be inoculated with HLB in the UC Davis contained research facility. JPL will lead an effort to measure the reflectance spectral of these specimens with weekly frequency as the disease progresses. The following milestones have been achieved: * Design of a test station incorporating a reflectance spectrometer with spectral performance similar to AVIRIS-ng, an appropriate light source (simulating solar illumination), and calibration standards. * Fabrication of the test station. * Development of the experiment procedure. * Testing of the apparatus at JPL. * Delivery and installation of the test station at UC Davis. * Training of UC Davis personnel in the experiment procedure.