Citrus Greening: Identifying Characteristics and Prevention
Learn about Citrus Greening, a disease caused by the bacteria Huanglongbing, transmitted by the Asian Citrus Psyllid. Discover the identifying characteristics, host trees, and what to look for to prevent the spread of this disease in citrus trees.
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Presentation Transcript
Citrus Greening Identifying Characteristics Huanglongbing, a bacteria transmitted by Asian Citrus Psyllid, results in greenish, miscolored, mishapen, and bitter fruits on infected trees The Asian Citrus Psyllid is close to the size of a gnat Adults, eggs, larvae or pupae may be on leaves or stems
Citrus Greening Relationship between Bacteria and Psyllid Psyllid feeds on infected tree Carries Tree infected with huanglongbing (bacteria) huanglongbing to the next feeding site 2
Citrus Greening Common Host Trees Lemon Lime Orange Grapefruit Pomelo Mandarin Tangerine Meyer Lemon Mandarin Grapefruit Meyer Lemon 3
Citrus Greening Map Range of Citrus Greening American Elm 4
Citrus Greening What to Look For 1 1. Leaves develop a yellow blotchy appearance Sparsely leaved branches Infected citrus trees produce fruits that are green and bitter White waxy feeding residue from adult psyllids may be present 2. 3. 2 4. 5
Citrus Greening What to Look For 1 1. Leaves develop a yellow blotchy appearance Sparsely leaved branches Infected citrus trees produce fruits that are green and bitter White waxy feeding residue from adult psyllids may be present 2. 3. 2 4. 6
Citrus Greening What to Look For 3 1. Leaves develop a yellow blotchy appearance Sparsely leaved branches Infected citrus trees produce fruits that are green and bitter White waxy feeding residue from adult psyllids may be present 2. 3. 4 4. 7
Citrus Greening What to Look For 3 1. Leaves develop a yellow blotchy appearance Sparsely leaved branches Infected citrus trees produce fruits that are green and bitter White waxy feeding residue from psyllid nymphs may be present 2. 3. 4 4. 8
Citrus Greening What to Look For (cont.) YEAR-ROUND: Leaves are blotchy, defoliation, green or bitter fruits, misshapen fruits, white waxy residue 9
Citrus Greening Additional Resources USDA http://www.aphis.usda.gov/publications/plant_health/2011/CG- PestAlert.pdf Hungry Pests http://www.hungrypests.com/the-threat/citrus-greening.php EDDMaps: Reporting App for Smartphones http://www.eddmaps.org/ 10
