1. Please state project objectives and what work was done this quarter to address them: Main objective: To determine the large-scale efficacy of trunk injection of OTC on citrus tree health, fruit quality, and yield in existing rootstock trials in three different commercial growing environments. Sub-objectives: a) test the efficacy of OTC injection in the rootstock trunk compared to injection into the scion, and b) determine whether OTC injection increases/restores root densities and if there are interactions with the rootstock. In all three trials: Trunk diameters were measured. Leaves were collected for CLas and OTC detection; laboratory analysis is ongoing. Leaves were collected for nutrient analysis; analysis is in progress. Roots were collected to assess root density. So far we did not detect any significant differences between OTC-injected and non-injected trees for the root densities but we found differences among rootstocks.Selected information from these trials was presented at the Citrus Expo and in Citus Industry magazine. 2. Please state what work is anticipated for next quarter: We will continue with leaf collections for CLas and OTC analysis. Tree health will be monitored. Trunk/wound damage will be assessed. CLas and OTC analysis will continue. 3. Please state budget status (underspend or overspend, and why):The budget is as expected.