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Cooperative Extension Ventura County: Page

Diseases

Anthracnose Armillaria Root Rot Avocado Black Streak Dothiorella Fruit Rot Avocado Root Rot Bacterial Canker Fruit and Stem-End Rots Phytophthora Fruit Rot Recommendations for preventing the introduction of root rot organisms in new avocado plantings Root rot, how to spot it and what to do about it...
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Cooperative Extension Ventura County: Page

Root rot, how to spot it and what to do about it

It's spring time and the avocados are in bloom. If the trees are stressed from disease, persea mite or drought, the trees will often drop many of their leaves at this time, as well. The trees can look awfully bad.
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Cooperative Extension Ventura County: Page

Some do's and don'ts to prevent the spread of avocado root rot

Since THERE IS NO QUESTION that avocado root rot is the most serious disease of avocados, and since THERE IS NO QUESTION that at least 6 ,000 to 7,000 acres of avocados in California are known to be infected, are suspected of infection, or have been removed over the past several years because of inf...
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Cooperative Extension Ventura County: Page

Economics

Calculate Cost of Fire Damage to Citrus & Avocado Trees Notes on Avocado Tree Depreciation...
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Cooperative Extension Ventura County: Page

Notes on Avocado Tree Depreciation

This information has been adapted from an article by George E. Goodall, Farm Advisor, Santa Barbara County, appearing in the 1971 California Avocado Society Yearbook. It has been updated to include current costs and information sources.
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Cooperative Extension Ventura County: Page

Fertilization

Avocado Leaf Analysis Guide Chemigation Injection Devices Nitrogen Application with Micro-irrigation...
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Cooperative Extension Ventura County: Page

Avocado Leaf Analysis Guide

Through research and experience gained thus far in leaf analysis, the ranges of elements in avocado leaves have been tentatively established. These are useful as a guide to fertilization and orchard management but should not be taken as absolute values for all varieties under all conditions.
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