Source: UNIVERSITY OF GEORGIA submitted to
INITIATIVE TO IMPROVE BLUEBERRY PRODUCTION AND EFFICIENCY
Sponsoring Institution
National Institute of Food and Agriculture
Project Status
TERMINATED
Funding Source
Reporting Frequency
Annual
Accession No.
0219700
Grant No.
2009-34611-20117
Project No.
GEO-2009-03533
Proposal No.
2009-03533
Multistate No.
(N/A)
Program Code
CC-G
Project Start Date
Sep 1, 2009
Project End Date
Aug 31, 2011
Grant Year
2009
Project Director
NeSmith, D. S.
Recipient Organization
UNIVERSITY OF GEORGIA
200 D.W. BROOKS DR
ATHENS,GA 30602-5016
Performing Department
Horticulture
Non Technical Summary
Blueberries have become an important alternative crop for many farmers in south Georgia. In the past two decades, Georgia blueberry acreage has increased from 3500 acres to well over 12,000 acres, with an annual farm gate value soon expected to exceed $100 million. Georgia blueberry acreage is expected to continue increasing in the next 5 to 10 years; however, growers are facing many challenges. Many of the older orchards are declining in production and consist of antiquated varieties. Newer orchards have challenging issues with regards to rapid establishment. In the past, growers could expect to wait up to 5 years for an orchard to reach commercial production levels. However, in today's market, growers are challenged to achieve meaningful production in 3 years or less. Some of the market windows for Georgia growers currently yield high prices, however, these prices are expected to lower as production increases and growers will need to improve overall production efficiency to remain economically viable. Finally, consumers are currently highly attracted to blueberries due to their many health benefits which have added to the need for increased production. However, to keep consumers interested in the commodity for years to come, high quality fruit needs to be made available, as consumers are becoming increasingly discerning with respect to produce quality. Given the challenges listed above, research and research facilities are needed to keep Georgia blueberry growers, old and new, at the forefront of competitiveness. Projects aimed at developing new cultivars and management practices that increase production efficiency and improve quality of fruit delivered to consumers are planned. Some key areas that will be addressed are: 1) development of mechanical harvested blueberry cultivars to reduce hand-labor needs; 2) development of precocious varieties and production systems that achieve meaningful commercial production in 3 years or less; 3) development of cultivars and production systems that rely less on costly inputs such as frost protection and soil amendments; 4) improvement of fruit quality through new cultivars and development of sound pre- and post-harvest management practices. This initiative will be carried out at the UGA Blueberry Research Farms located near Tifton and Griffin, Georgia. In addition, on-farm trials and demonstrations will be conducted with cooperators in south Georgia. Engagement of the Georgia blueberry industry in the project will yield timely results with the most immediate impact. Growers will readily experience first-hand research results through both UGA Research Farm Field days and on-farm demonstrations.
Animal Health Component
60%
Research Effort Categories
Basic
20%
Applied
60%
Developmental
20%
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
2041120102030%
2011120108060%
5031120102010%
Goals / Objectives
Blueberries have become an important alternative crop in south Georgia. In the past two decades, Georgia blueberry acreage has increased from 3500 acres to well over 12,000 acres, with a value soon expected to exceed $100 million. Blueberry acreage is expected to continue increasing in the next few years, but, growers are facing many challenges. Older orchards are declining in production and consist of antiquated varieties. Newer orchards have challenging issues with regards to rapid establishment. Some of the market windows for Georgia growers currently yield high prices, however, these prices are expected to lower as production increases and growers will need to improve production efficiency to remain economically viable. High quality fruit needs to be made available, as consumers are becoming increasingly discerning with respect to quality. Research is needed to keep Georgia growers at the forefront of competitiveness. Projects aimed at developing new cultivars and management practices that increase production efficiency and improve quality of fruit delivered to consumers are planned. Specific goals of this project are: 1) development of large fruited rabbiteye cultivars; 2) development of mechanically harvested cultivars; 3) development of late flowering, early ripening southern highbush cultivars; 4) development of vigorous southern highbush cultivars with a wider range of soil adaptability, 5) development of high quality fruit with regards to flavor and storage/shipping. This initiative will help Georgia blueberry growers to improve their production efficiency and quality of product delivered to consumers, which will enhance long-term economic viability of the industry.
Project Methods
This initiative will be carried out at the UGA Blueberry Research Farms located near Tifton and Griffin, Georgia. Field experiments aimed at each objective will be initiated and carried out in replicated plots at the UGA Experiment Station Farms. Detailed observations and ratings of flowering dates, ripening dates, berry size, and berry firmness will be made for various blueberry selections and standard cultivars over the course of the growing season. In some test plots, blueberries will be harvested with a mechanical harvester to determine suitability of the harvest method. In addition, on-farm trials and demonstrations will be conducted with cooperators in south Georgia. Engagement of the Georgia blueberry industry in the project will yield timely results with the most immediate impact. Growers will readily experience first-hand research results through both UGA Research Farm Field days and on-farm demonstrations. In addition to field experiments, laboratory studies related to fruit sizing, firmness, and post-harvest fruit quality will be conducted.

Progress 09/01/09 to 08/31/11

Outputs
OUTPUTS: The 2011 growing season was good in both Alapaha and Griffin. Chill hours (calculated from Oct. 1 thru Feb. 15) were 1206 for Alapaha and 1573 for Griffin. The Alapaha chilling was near record, since typically this area only gets 750 hours of chilling on average. Comprehensive flowering notes, cropping notes and fruit characteristic evaluations were taken for more than 400 selections of rabbiteye and southern highbush blueberries, as well as numerous cultivar standards at the test sites. More than 2500 seedlings were evaluated in the nursery at the Griffin site in 2010, and more than 200 new selections were produced in 2011 for further testing. Ratings were also made for some selections at on-farm test sites in 2011. PARTICIPANTS: Nothing significant to report during this reporting period. TARGET AUDIENCES: Nothing significant to report during this reporting period. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.

Impacts
Over the course of this project we were able to release a new southern highbush variety for commercial growers and a new ornamental blueberry for home gardeners. The commercial blueberry, Southern Splendour, offers outstanding firmness and flavor in an early ripening variety. The new variety is expected to be machine harvestable for the fresh market. The ornamental blueberry, named Summer Sunset, offers home gardeners unique multi-colored berries as they ripen. Berries pass through a series of colors of yellow-green, to orange, to deep red, to midnight blue. It is expected this will also be used in landscapes as an edible ornamental. With regards to additional commercial blueberry selection evaluations, we obtained yield data for certain rabbitye selections and standards at the Alapaha and Griffin Research Farms in 2011. A notable early ripening selection is T-957, which had good fruit size and yield at both test locations in 2011. T-957 ripens several days before the standards Vernon and Alapaha in both South and Middle Georgia locations. T-968 is a mid-season rabbiteye variety that offers improved fruit size and quality over the standard Brightwell. We will continue to monitor these and other selections over the next few years.

Publications

  • NeSmith, D.S. 2011. Southern Splendour Southern Highbush Blueberry. HortScience 46: 674-675.
  • NeSmith, D.S. and M.K. Ehlenfeldt. 2011. Summer Sunset: A New Ornamental Blueberry Variety. HortScience 46: 1560-1561.
  • NeSmith, D.S. 2011. Blueberry variety releases from the University of Georgia. Posted at http://www.smallfruits.org/Blueberries/production/UGABlueberryVarieti esandpicturesUpdated2009.pdf
  • NeSmith, D.S. and M.K. Ehlenfeldt. 2011. Summer Sunset: A new ornamental blueberry variety. HortScience 49(9) : S263 (Abstr.)


Progress 09/01/09 to 08/31/10

Outputs
OUTPUTS: Funds for this project were allocated in 2009. This allowed new research on blueberry breeding, selection, and evaluation to begin, along with research concerning fruit sizing and quality. Results from these investigations will help improve cultivar development and harvesting methods, which will in turn improve growers' production efficiency. A major effort for this overall project is the development of new blueberry varieties for both commercial growers and home gardeners. Data collection aimed at these objectives included taking comprehensive flowering notes, cropping notes and fruit characteristic evaluations for a number of new selections of rabbiteye and southern highbush blueberries that have been obtained from crosses made at UGA in the past few years. These selections, as well as numerous cultivar standards, were grown at UGA Research Farm test sites and on farms and commercial nurseries with key grower-cooperators. Engagement of growers in the project has helped to gain valuable insights from their observations concerning the new blueberry selections. They experienced first-hand research results through both UGA Research Farm Field visits and on-site demonstrations. Additionally, presentations to growers and nurserymen, Ag Extension Agents, and regional scientific personnel allowed for interaction and feedback on project progress and future breeding and research goals. PARTICIPANTS: PI NeSmith conducted the variety development research, including conducting UGA Research farm trials and on-site trials with growers and nurserymen. PI NeSmith made more than 12 on-site visits with grower-collaborators this year to evaluate test plots on their farms and to gather input from the growers about performance of new blueberry selections. PI NeSmith also cooperated in plant propagation and establishment trials. TARGET AUDIENCES: Target audiences for this project include commercial blueberry growers in Georgia and across the southeastern US, as well as home gardeners. Field demonstrations were held at the UGA Blueberry Research Farm which was attended by a number of growers and nurserymen from across the Southeast as well as several international visitors. The visitors were shown demonstration plots of new blueberry selections and were allowed to comment on the potential of the selections as new varieties. Presentations at the Annual Georgia Fruit and Vegetable Grower's meeting and the Georgia Green Industry Association's meting were disseminated to more than 200 growers from across the Southeast. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.

Impacts
Funds received from this Initiative have facilitated both personnel and equipment enhancements to our program that expedited our abilities to provide growers with the newest technologies and information possible. We were able to expand our breeding effort, making new crosses aimed at both commercial producers and the home gardener. One impact area for the project was the release of a new blueberry variety for commercial growers named Southern Splendour. This new blueberry variety aims to offer southeastern commercial blueberry growers a southern highbush for possible mechanical harvesting. An on-farm demonstration with mechanical harvesting of Southern Splendour compared to older varieties revealed that the new variety releases fruit rather easily with mechanical harvesting, and fruit have better quality than competing varieties following mechanical harvesting. We are just getting underway with commercial propagation and distribution of Southern Splendour, so growers should have more trial results in the next 2 to 3 years. Other noteworthy advancements of Southern Splendour include exceptional flavor and firmness. The appealing flavor was verified by a marketer's taste panel, where Southern Splendour was ranked among the highest with regards to taste and quality. The firmness of Southern Splendour also gives it an advantage in long distance shipping as a fresh fruit. A second impact from this Initiative was release of a unique variety for the home consumer market. We released Blue Suede as a home gardener's blueberry having highly attractive light blue fruit and colorful fall foliage. Considerable excitement has been generated from consumer nurseries informed of the introduction of Blue Suede. A pilot marketing program is underway and the new blueberry has been well received at nursery trade shows as an outstanding and unique edible ornamental. Another impact area includes results from basic studies on blueberry fruit detachment. Results from the physiological study have shown considerable variation among existing blueberry germplasm for this trait. The identification of selections with a more favorable degree of the trait (i.e, ease of berry detachment) has helped to direct the blueberry breeding program in selecting the most promising parents for crosses. We also continue to conduct fruit firmness screening with many blueberry selections and are moving forward with additional test trials with those selections that appear most likely suitable for machine harvesting. Also, we are using the more firm selections identified in our breeding program.

Publications

  • NeSmith, D.S. and M.K. Ehlenfeldt. 2010. Blue Suede: A southern highbush blueberry for the home gardener. HortScience 45: 302-303.
  • Malladi, A. and D.S. NeSmith. 2009. Evaluation of rabbiteye blueberry cultivars and selections for fruit abscission characteristics. Southern Region Small Fruit Consortium Progress Report.
  • NeSmith, D.S. 2010. Some comments on UGA southern highbush blueberry varieties Rebel and Camellia following 2009. Dixie Blueberry News 10(1): 10-11.
  • NeSmith, D.S.. 2010. Suziblue: A new southern highbush blueberry variety from The University of Georgia. Small Fruit News 10: 2-3.
  • NeSmith, D.S. 2010. Southern highbush blueberries 2010: When will they ripen. Dixie Blueberry News 10(2): 4-6.
  • NeSmith, D.S. and M.K. Ehlenfeldt. 2010. A new blueberry variety for home gardeners. SRASHS Abstract. Orlando, FL Feb. 6-9.
  • NeSmith, D.S. and M.K. Ehlenfeldt. 2010. Suziblue: A new early ripening southern highbush blueberry. SRASHS Abstract. Orlando, FL Feb. 6-9.
  • Brannen, P., J. Smith, J. Garner, and S. NeSmith. 2010. Phytotoxicity danger of phosphorous acid generating fungicides and fertilizer products applied to blueberries and grapes. APS Abstract and Poster.