Citrus Canker

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*This is an excerpt from Citrus Pest Identification and Management Guide, ANR- 2270.

The most characteristic symptom of HLB is blotchy mottling that appears asymmetrically on the leaf blade. Green islands may also occur; these are small, circular, dark green dots that contrast with the light yellow/green background. Foliar symptoms that resemble nutrient deficiencies may be present. A tree may exhibit yellow shoots or other nutrient deficiency symptoms on one or more branches randomly in the canopy. Fruit may be small and lopsided or ripen backward, with the stylar end remaining green as the fruit colors.

Management tips: Citrus greening has not been found in Alabama to date. If citrus greening is suspected, contact your local diagnostic lab.

 

Read more about Citrus Pest Identification and Management Guide.

Download a PDF of Citrus Pest Identification and Management Guide, ANR- 2270.

*This is an excerpt from Citrus Pest Identification and Management Guide, ANR- 2270.

Initial symptoms include vein yellowing followed by yellow foliage, poor growth, and shoot dieback. Advanced symptoms consist of leaf and fruit drop, trunk lesions, and tree death. Trunk lesions are found near the crown or below the soil line and may contain bark cracking and gumming.

Management tips: Use resistant rootstock (trifoliate orange). Plant the bud union at least 6 inches above the soil line. Do not overwater. Control ants around the base of the tree. Prevent mechanical injury to the trunk.

 

Read more about Citrus Pest Identification and Management Guide.

Download a printable PDF of Citrus Pest Identification and Management Guide, ANR- 2270.

 

The Organic Vegetable IPM Toolkit slide chart, a critical tool for small producers and beginning farmers, provides information about organic and sustainable pest management strategies for more than 20 critical insect pest species.

The tool includes the most common chewing and sucking insect pests and connects those to the best practices of prevention or exclusion. Insects that this tool covers include tomato fruitworm, grasshopper, cutworm, thrips, and many more. Farmers can view systems-based practices, mechanical and physical tactics, and which biorational insecticides will work best before outbreak status.

To order a slide chart, contact Ayanava Majumdar at azm0024@aces.edu. You can also get a copy from any commercial horticulture regional Extension agent.

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