Location: Tropical Crops and Germplasm Research
Project Number: 6090-21000-057-007-R
Project Type: Reimbursable Cooperative Agreement
Start Date: Oct 1, 2020
End Date: Aug 31, 2024
Conduct multistate evaluation, semi-commercial trials, and release of the five advanced UCR rootstocks. Rootstock field-testing nationwide and their commercial release will reduce avocado loses due to PRR and abiotic stresses and evaluate early adoption of these new elite material.
Field evaluation of 5 advanced, soon to be released rootstocks from the University of California- Riverside (UCR) with good resistance to Phytophthora root rot (Prr) and salinity tolerance will be planted in a randomized complete block design in Mayaguez, PR. Experimental treatments will include:1) five UCR rootstock selections grafted with Hass; 2) a local (‘Criollo”) rootstock grafted to Hass; 3) in addition, avocado selections will be evaluated in this experiment. Parameters to be recorded will include: Canopy height, trunk diameter, overall vigor, leaf nutrient concentration, fruit production, among others.