Evaluation of citrus rootstock response to HLB in large-scale existing field trials

Evaluation of citrus rootstock response to HLB in large-scale existing field trials

Report Date: 04/12/2021
Project: 18-029C   Year: 2021
Category: Plant Improvement
Author: Ute Albrecht
Sponsor: Citrus Research and Development Foundation

 1. Please state project objectives and what work was done this quarter to address them: Objective 1. Investigate rootstock effects on horticultural performance of Valencia and Hamlin trees commercially grown under HLB-endemic conditions using standardized field data collection procedures.We conducted additional HLB foliar disease symptom and canopy color ratings at both Valencia trials for seasonal comparison. We also collected leaves for additional nutrient analysis and CLas detection.Valencia fruit samples were collected at the Basinger location for fruit quality analysis in advance of the harvesting. Fruit quality analysis was completed for these samples at the CREC pilot plant.We are working on the leaf CLas analysis.We are continuing with the statistical analysis of all new data and are working on a manuscript for publication of three years of Valencia data. Objective 2. Develop outreach to transfer information to growers and other industry clientele.Nothing to report in this quarter.  2. Please state what work is anticipated for next quarter: Fruits will be collected from the Valencia trees at the Lake Wales (Camp Mack) location for fruit quality analysis, and yield will be assessed.  We will continue with the data analysis. A rootstock seminar including trial updates will be given in June at SWFREC (or virtual, depending on the Covid-19 situation).  3. Please state budget status (underspend or overspend, and why): Approximately 64% of funds have been spent, which is somewhat underspent due to Covid-19 related complications that affected research, travel, and hiring of personnel.  


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