Citrus root structures, rootstock propagation methods and trunk injection.

0:00 - Introduction
Coordinator: Dr. Mongi Zekri, Multi-County Citrus Extension Agent, UF-IFAS

0:40 - Presentation #1
Title: Citrus root structures and rootstock propagation methods.
Speaker: Dr. Ute Albrecht, Assistant Professor, UF/IFAS Southwest Florida Research and Education Center, Immokalee
Summary: Recently, there has been some concern regarding the inferiority of roots in field-grown citrus trees and the possible association with the rootstock propagation method. This seminar will present an overview of the results from three years of field trials comparing seed-, cuttings-, and tissue culture propagated rootstocks grafted with Valencia. Detailed information on root structures from the nursery to the field will be provided and excavated root systems will be available for hands-on examination. The possible factors influencing root structures will be discussed.

48:27 - Presentation #2
Title: Trunk injection for delivery of HLB therapies
Speakers: Dr. Ute Albrecht, Assistant Professor, and Leigh Archer, PhD candidate, UF/IFAS Southwest Florida Research & Education Center, Immokalee
Summary: This presentation will provide information on the basic principles of trunk injection to deliver HLB therapies. Results from ongoing injection studies documenting the effects on tree health, pathogen reduction, fruit quality, and yield will be presented, and possible implications will be discussed.