UGA Blueberry Blog

Monitoring and Management of Thrips in Blueberries

Flower thrips are chronic pests of both southern highbush and rabbiteye blueberries in the southeastern United States. Thrips are minute (1 to 1.3 mm long) insects with slender body and usually yellowish to orange in color. Adults have long thin wings fringed with fine hairs (Figure 1). Females are generally…
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Monitoring and Management of Blueberry Gall Midge

The reports of blueberry gall midge infestations in Georgia blueberries have become more common over the last couple of years. Blueberry gall midge, Dasineura oxycoccana (Johnson) (Diptera: Cecidomyiidae) was first identified as a pest of rabbiteye blueberries in the southeastern United States in early 1990s. Since then, gall midge has…
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Mummy Berry Germination Model Results

Dr. Harald Scherm ran the mummy berry model today, and it indicates that we are currently in a DANGER period for mummy berry disease initiation.  Harald stated that the temperature-driven model indicated that apothecium (spore-forming structure that develops from overwintered mummies on the ground and in debris) emergence should be well underway…
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Pristine + Captan Products Tank Mix Label

Due to testing conducted at the blueberry research farm (Alma, GA) by Renee Holland (multi-county blueberry agent) in collaboration with Phil Brannen, BASF has now approved application of Pristine + Captan in a tank mix. Testing of the tank mix combination was conducted on multiple rabbiteye and southern highbush cultivars,…
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Mummy Berry Fungicide Application Triggers

Based on reports from the field, bloom may be ahead of green tip on some rabbiteye varieties this year.  Producers are keenly aware that green tip is utilized to initiate the first application of fungicides for mummy berry, but they sometimes forget that flowers will be susceptible if flower bud…
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Monitoring and Management of Blueberry Gall Midge

We have received several reports of blueberry gall midge infestations over the past few weeks. Blueberry gall midge, Dasineura oxycoccana (Johnson) (Diptera: Cecidomyiidae) was first identified as a pest of rabbiteye blueberries in the southeastern United States in early 1990s. Since then, gall midge has been confirmed as a pest…
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Mummy Berry Model Prediction

Dr. Harald Scherm has determined the mummy berry potential (germination and development of the apothecia); all southern Georgia blueberries that are showing either green tip or early bloom developmental stages are at high risk for mummy berry infection at this time and going forward. This is especially true as temperatures…
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Response to February Cold Damage and Potential Botryosphaeria Development on South Georgia Blueberries

The following is largely a synopsis of information previously provided by Gerard Krewer (UGA Professor Emeritus and consultant), Bill Cline (NC State), Dave Lockwood (Univ. of TN), Danny Stanaland (retired county agent and consultant) and myself relative a suggested response to cold damage on blueberries and the potential threat of…
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