Root rot, caused by Phytophthora cinnamomi, is the most serious and important disease of avocados worldwide. P. cinnamomi has more than 1 000 hosts, including many species of annual flower crops, berries, deciduous fruit trees, ornamentals, and vegetables. Locally, it's found in all production areas, as well as home gardens. The severity of infection varies, but the potential loss is very big if no control measures are taken.
• Root rot
Root rot likes soil moisture and poor drainage. Trees of any size and age may be affected. “The pathogen is easily spread through movement of contaminated nursery stock […] on equipment and shoes, in seed from
