UGA Blueberry Blog

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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Botrytis Management after the Cold Event

The following information is of value to commercial blueberry producers in the southern part of the state or anywhere that blueberries are in bloom.  We just had a couple of nights of cold temperatures (<25 F) in most parts of our blueberry belt, so this message is especially targeted for…
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Management of Ground Pearls in Blueberries

A grower recently complained about his blueberry bushes being less vigorous with weak root system. After examining the root system, we discovered that the roots were infested with numerous small, yellowish-brown round cysts which were identified as ground pearls. Ground pearls, Margarodes spp. (Hemiptera: Margarodidae), are subterrestrial insects closely related…
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2014 SWD Impact Assessment Survey

As spotted wing drosophila (SWD) has become established throughout the United States, Canada, and Europe, it has become increasingly important to understand the impacts this pest has had in different crops and regions. We have conducted grower-focused impact assessments for the last two years and this information has been used to…
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