How do subterranean pests and diseases affect root health of trees with and without HLB?

How do subterranean pests and diseases affect root health of trees with and without HLB?

Report Date: 05/26/2022
Project: 19-016   Year: 2022
Category: CLas Bacteria
Author: Larry Duncan
Sponsor: Citrus Research and Development Foundation

The previous report noted that trees on Swingle citrumelo and Carrizo rootstock were located and ordered for delivery in January when they would be used to repeat the HLB-Tylenchulus semipenetrans trial. Also that Kuharske plants were added to seedlings for a rootstock trial to evaluate tolerance to Radopholus similis in traditional rootstocks and newer releases, with inoculation to occur also in January.  However, our greenhouse was disassembled without notice during the first week of January. The walls were open to the outside and a job that was to be finished in  few days was not completed for more than three months. We moved all the citrus material to our soil processing laboratory to prevent infestation by Asian citrus psyllid. Eventually, we were forced to move our nematode cultures as well, due to high ambient temperature when the cooling system was removed. As a consequence, inoculation of these experiments was not possible.         


Your browser does not support pdfs, click here to download the file.