A Guide to Citrus Disease Identification

Proper disease identification is an important factor in planning and conducting any disease control program. Disease symptoms may vary in expression on foliage, stems, roots, and fruit, and may not in all cases resemble those illustrated in various publications. Symptoms can vary considerably from mild to severe depending upon infection period, climatic conditions, and age of tissue when infection occurred. When in doubt about disease identification, seek advice before committing to costly and perhaps inappropriate corrective measures.