Fruits and vegetables
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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.

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.

Trap cropping is a unique cultural insect control tactic that deters pest feeding damage and works for certain insect pests; my focus has been leaffooted bugs and stink bugs with the sorghum-sunflower system we recommend. If you haven’t experienced it, then it is worth trying on small scale and then expand it for a full-fledged adoption.

As an entomologist, I was skeptical of the large scale use of the trap crops but that all changed as I started doing bigger vegetable test plots and IPM demonstrations to increase my confidence. The seeds are cheap and a bag of NK-300 sorghum or Peredovik sunflower lasts a while! By using sorghum and sunflower trap crop system on nearly 5.5 acres of vegetables across three locations (come to any of the IPM field days to see the trap crops in action), the vegetable IPM program has reduced spraying of main crops (tomatoes/peppers/squash) for leaffooted bugs by as much as three applications of neonicotinoids that otherwise would be needed in rotation with weekly synthetic pyrethroids applications. Overall, by only spraying the top of the NK300 sorghum panicle to kill the leaffooted bugs, we have also increased the beneficial insect population within trap and main crops.