Organic acids compared to conventional acidification for improved nutrient uptake and root physiology

Organic acids compared to conventional acidification for improved nutrient uptake and root physiology

Report Date: 04/16/2021
Project: 20-004   Year: 2021
Category: Horticultural & Management
Author: Evan Johnson
Sponsor: Citrus Research and Development Foundation

1. Please state project objectives and what work was done this quarter to address them: Objective 1: Determine effects of lowered soil pH on CLas populations and root physiology including internal root apoplast and vascular tissue pH.We are preparing plant material for CLas inoculation to initiate these experiments  Objective 2: Field test multiple acidification materials including organic acids for tree response CLas suppression, nutrient uptake, and root and vascular pH changes  We have identified multiple candidate field sites and are currently working on assessing soil characteristics to make sure they fit within the desired starting conditions, especially pH, for the trial.    2. Please state what work is anticipated for next quarter: In the next quarter we anticipate inoculating greenhouse trees with CLas for objective 1.  In the next quarter we anticipate finalizing field site selection, layout of plots, preliminary plot data collection, and initiation of treatments for objective 2   3. Please state budget status (underspend or overspend, and why):  The budget is in underspend because we need final field site selection before determining the injection equipment and amount of chemical for application based on row length.  


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