Aphids on Peanut
Aphids on Peanut

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The Peanut IPM Slide Chart is a critical tool for peanut producers, crop consultants, ag retailers, and pesticide dealers in Alabama. This slide chart provides information about pest identification and scouting methods, insecticide choices and application rates, and much more for a quick-reference. To order the slide chart by mail, please contact Dr. Ayanava Majumdar by email at azm0024@aces.edu or by contacting an Agronomic Crops Regional Extension Agent near you.

 

 

*This is an excerpt from Sucking Pests of Peanuts in Alabama, ANR-0990.

The predominate spider mite found on Alabama peanuts is the two-spotted mite. These tiny, insect-related pests feed primarily by sucking plant juices from the underside of the leaf.

The feeding causes a yellow speckling of the leaves and the foliage to gradually turn from yellow to brown. Large populations of mites can be solely responsible for serious plant damage and defoliation. There is usually a fine webbing associated with the feeding site of the mites. The mites themselves are yellow with two black spots on the body. Immatures appear to be red or reddish-yellow. Adults lay eggs near the underside of the leaflet mid-vein. As the population increases, they begin to move to the terminals of the plant with “balls” of mites accumulating at the top of the plant.

Spider mites usually migrate from weedy field borders, utility poles, or garden areas. In the heat of summer, as these areas begin to dry up, the mites are spread by wind, equipment, or animals moving through the peanuts. Therefore, initial infestations are usually small and spotty, limited to areas 2 to 3 feet in diameter. Early infestations of spider mites may be confused with damage caused by peanut rust.

Scouts should be alert to look for symptoms of mite infestation before they spread over the field. In general, spider mites are a hot, dry weather pest with major outbreaks occurring in droughty years. Applications of certain foliar insecticides may also “trigger” outbreaks of mites if weather conditions are favorable. Most insecticides will not effectively control these pests and a true miticide must be used to obtain effective results.

Read here to learn more about sucking pests of peanuts in Alabama.

 

 

*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.

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