Blueberries Resources
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To be more competitive, Georgia blueberry producers have to increase their yields to match or better the average U.S. values. This increase can occur through an improvement of the agricultural practices and a better mastery of blueberry cultivation. This publication contains information to help Southern Highbush blueberry growers in Georgia maximize their profits.
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AP 130-4-10
2026 Fruits and Tree Nuts Outlook
The key points for 2026 are: Blueberries will continue to lead the Georgia fruits and tree nuts industry in 2026 and subsequent years; it will be challenging for the Georgia pecan industry to regain its leadership position in the fruits and nuts category, but the industry will remain strong in 2026; consumer and grower price indexes will remain strong in 2026.
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The southeastern blueberry bee is an economically valuable pollinator in commercial blueberry production in Georgia. Researchers see a need for conservation of this species, and this resource provides detailed information on its identification, biology, nesting habitat, and floral hosts. It also incorporates research data from recent study in commercial blueberry system in south Georgia.
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Exobasidium leaf and fruit spot, caused by the fungus Exobasidium maculosum, is an emerging disease affecting both southern highbush and rabbiteye blueberries. In addition to direct yield loss due to fruit drop, lesions on remaining fruit compromise the aesthetic qualities of the fruit as well as the taste, rendering them unmarketable. This circular provides the most current knowledge of this important pathogen/disease of blueberry and its management.
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This publication outlines the sampling procedure for irrigation water to be used in blueberry production. Follow the outlined steps to provide a certified lab with a sample that is representative of the irrigation water to be used for growing blueberry plants.
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Drip, trickle, microemitters, and subsurface irrigation systems are considered low-volume irrigation. Low-volume irrigation systems are designed to improve irrigation efficiency, delivering water to the crop accurately with minimal water loss. Irrigation efficiency can be categorized into two main concepts: water loss and uniform application. If water loss is significant, or application uniformity is poor, efficiency will be low. Generally, the most significant loss of irrigation water is from overwatering, where the water percolates below the root zone, or from runoff. With good management, losses due to leaks, system drainage, and flushing of filters and lateral lines should not exceed 1%. Low-volume systems have the opportunity to achieve efficiency, and under careful management, will minimize losses from overirrigation. However, using low-volume systems requires increased irrigation frequency and soil moisture monitoring should be used to improve water-use efficiency. This publication covers system design, system efficiencies, components, chemical applications, diseases related to irrigation, and soil moisture monitoring.
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Grower experiences have proven milled pine bark to be an excellent growing substrate for southern highbush blueberries. Although milled pine bark shares many characteristics with good blueberry soil, fundamental differences exist and need to be understood for rapid growth of young plants and high blueberry yields.
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Blueberry gall midge, a small fly native to North America, has emerged as one of the serious pests of blueberries in Georgia. Severe gall midge infestations can cause up to 80% crop loss without proper intervention. Bud sampling to monitor for larvae is the only way to confirm its presence. Insecticide sprays need to be timed to target adult midges before they have a chance to lay eggs.
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This publication provides current (2025) Southeast-specific information on approved National Organic Program (NOP) disease and pest management options for blueberry production and addresses the issues most commonly encountered under the unique growing conditions of the Southeast U.S. This publication is not intended to provide all details on organic blueberry production, although it does include the production methods that reduce the impact of plant disease and pest issues.
Emphasis in an organic system should be on cultural practices that reduce disease and pest pressure rather than pesticide applications. NOP-approved pesticides are usually less efficacious than conventional products. The pesticide label is the law and supersedes any information on pesticide use contained in this guide. Because environmental conditions and grower application methods vary widely, suggested use does not imply that the performance of the pesticide will always conform to the pest control standards indicated by experimental data. This publication is a product of the Southern Region Small Fruit Consortium.
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