- Leaf - yellow foliage and shoot die-back
- Fruit - reduced fruit size and yield
- Trunk - infected areas results in dark water soaked
Lesions usually occur on the bark or at the bud union
Lesions may exude copious amount of gum
Dead bark tends to break away from the trunk in vertical strips
Lesions may spread around the circumference of the trunk slowly girdling the tree - Whole tree - Poor tree health, thin canopy, failure to make new growth, and little water and nutrient uptake leading to wilting
Infected root surface becomes soft, discolored and appears water-soaked - Most scion cultivars are susceptible to bark infection
- Most root stocks are moderately tolerant to bark infection
- http://idtools.org/id/citrus/diseases/factsheet.php?name=Phytophthora
- Paint damaged area with Copper Fungicide
- Mongi Zekri Ph.d UF/IFAS 5-County Agent
- Tree dies from starvation
- Root stock not affected
- Scion is affected
- Yellow veins on leaves
- Often caused from weed wacker damage
- Do not plant tree too deep
- Mongi Zekri Ph.d UF/IFAS 5-County Agent
Phytophthora Fungal Diseases on Trunk
Phytophthora Fungal Diseases on Leaves
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| Yellow vein symptoms associated with girdling of a young tree by Phytophthora foot rot. http://idtools.org/id/citrus/diseases/factsheet.php?name=Phytophthora |
Phytophthora Fungal Diseases on Fruit
Resources
http://edis.ifas.ufl.edu/hs261
http://edis.ifas.ufl.edu/ch159
http://idtools.org/id/citrus/diseases/factsheet.php?name=Phytophthora
