Citrus Greening

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

Foliar lesions have raised, concentric circles on the underside of the leaf. Lesions frequently are surrounded by a water-soaked margin and a yellow halo. The middle of the lesion (on underside of leaf) has a corky texture. Fruit lesions consist of concentric circles. On some varieties these circles are raised and have a rough texture; on other varieties the concentric circles are relatively flat. Citrus canker has not been found in Alabama to date. If citrus canker is suspected, contact your local diagnostic lab.

 

Read more about Citrus Pest Identification and Management Guide.

Download a printable 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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