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10Th North American Blueberry Research and Extension Workers

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10Th North American Blueberry Research and Extension Workers PROCEEDINGS 10th North American Blueberry Research & Extension Workers’ Conference June 4-8, 2006 Tifton, Georgia 10th North American Blueberry Research & Extension Workers’ Conference June 4-8, 2006 at the University of Georgia Tifton Campus Conference Center Tifton, GA Hosted by D. Scott NeSmith, Editor ii Forward and Acknowledgements The 10th North American Blueberry Research & Extension Workers’ Conference was held at The University of Georgia’s Tifton Campus Conference Center on June 4-8, 2006. The first half of the Conference consisted of oral and poster paper presentations by scientists from around North America and abroad, while the last two days was a tour of the Georgia blueberry industry and an overnight trip to St. Simons Island. Conference organizers were Dr. Gerard Krewer and Dr. D. Scott NeSmith, faculty members in the Department of Horticulture at The University of Georgia. The Conference organizers would like to thank the following sponsors for funds received in support of the 10th North American Blueberry Research & Extension Workers’ Conference. Driscoll’s Georgia Blueberry Growers’ Association Georgia Fruit & Vegetable Growers’ Association Michigan Blueberry Growers Association Southern Region Small Fruit Consortium SunnyRidge Farm, Inc. U.S. Highbush Blueberry Council Valent Biosciences iii 10th North American Blueberry Research & Extension Workers’ Conference Scheduled Program SUNDAY, JUNE 4, 2006 3:00-6:00 pm Registration at Agrirama (State Museum of Agriculture) Exit 63B then go west, I-75, Tifton, Ga. MONDAY, JUNE 5, 2006 8:00-8:30 am Registration at UGA Tifton Campus Conference Center Exit 64 then go west, I-75, Tifton, Ga. 8:30 am ORAL PAPER SESSION I 8:30 am Welcome 8:40 am U.S. Highbush Blueberry Council - How It Works, What It Does Dave Brazelton, Fall Creek Nursery, Lowell, OR 9:00 am Sensitivity Profitability Analysis for Growing Rabbiteye Blueberries in Georgia Greg Fonsah, Univ. of Georgia 9:20 am Stirring the Pot; The Role Of Interspecific & Sectional Hybridization in the N. C. State Program Jim Ballington, North Carolina State Univ. 9:40 am Seasonal & Varietal Variation in Hardiness of Blueberry Flower Buds Eric Hansone, Michigan State Univ. 10:00 am Refreshment Break 10:40 am Soil Characteristics Associated with Wild Huckleberry and Bilberry Colonies in the Northwestern U.S. Danny Barney, Univ. of Idaho 11:00 am Evaluation of Two Organic Fertilizer Blends for Blueberry Production Wei Yang, Oregon State Univ. iv 11:20 am Nutrient Assessment Technologies for Wild Blueberry Production David Percival, Nova Scotia Agricultural College 11:40 am Comparison of Irrigation Methods for Establishing Highbush Blueberry David Bryla, USDA-ARS, Corvallis, OR 12 noon – 1:30 pm Lunch Break (included in full conference registration) 1:40 pm Environmental Losses of Soil Applied Nitrogen in Wild Blueberry Production Gloria Thyssen, Nova Scotia Agricultural College 2:00 pm Effects of Raising Leaf Cu Concentration Growth & Field of Lowbush Blueberry John Smagula, Univ. of Maine 2:20 pm Reducing Soil pH To Control Weeds in Wild Blueberries David Yarborough, Univ. of Maine 2:40 pm Parthenocarpic Fruit Development in Highbush Blueberry (Vaccinium corymbosum L.) Mark Ehlenfeldt, USDA-ARS, Chatsworth, NJ 3:00 pm Refreshment Break 3:30 pm POSTER SESSION I (authors present at posters) Poster Number 1. Blueberry Production Increasing in Clinch County Elvin Andrews, Univ. of Georgia 2. Improved Methods of Replanting Blueberries in Established Fields Elvin Andrews, Univ. of Georgia 3. Phytotoxicity of CPPU on Southern Highbush Blueberry in North Carolina Bill Cline, North Carolina State Univ. 4. Nutsedge Control in Newly Planted Blueberries Mark Czarnota, Univ. of Georgia v 5. Cost Benefit Analysis of Rabbiteye Blueberry Production in Georgia Greg Fonsah, Univ. of Georgia 6. The New Michigan State University Highbush Blueberry Varieties Jim Hancock, Michigan State Univ. 7. Horizontal Wells: What Are They, How Do They Work, and How Would They Benefit Us Gary Hawkins, Univ. of Georgia 8. New Southern Highbush Blueberry Varieties from The University of Georgia D. Scott NeSmith, Univ. of Georgia 9. Response of ‘Reveille’ Southern Highbush Blueberry to Various Amounts of Pinebark in a Typical Flatwoods Georgia Soil Gerard Krewer, Univ. of Georgia 5:30-8:30 pm Tour of UGA Alapaha Blueberry Research Station and Pig / Vegetable Roast (included in full conference registration or daily registration with dinner) TUESDAY, JUNE 6, 2006 8:00-8:30 am Registration at UGA Tifton Campus Conference Center 8:30 am ORAL PAPER SESSION II 8:30 am Welcome 8:40 am Georgia’s Native Vaccinium Species Wendy Zomlefer, Univ. of Georgia 9:00 am Factors Influencing the Long Term Storage of Blueberries Jim Hancock, Michigan State Univ. 9:20 am Impact of Management Practices on Blueberry Shoot Growth Bernadine Strik, Oregon State Univ. 9:40 am Use of Phosphite Fungicides for Control of Blueberry Diseases in Georgia Phil Brannen, Univ. of Georgia vi 10:00 am Refreshment Break 10:40 am Implementation of a Reduced-risk IPM Program for Control of Blueberry Insect Pests Rufus Isaacs, Michigan State Univ. 11:00 am Studies on Transmissibility of Stem Canker via Cuttings from Infected Plants Bill Cline, North Carolina State Univ. 11:20 am Effects of Cultural Practices on Severity of Blueberry Root Rot Barbara Smith, USDA-ARS, Poplarville, MS 11:40 am Screening for Sources of Aphid Resistance in Vaccinium spp., Advanced Selections & Cultivars Christopher Ranger, Rutgers Univ. 12 noon – 1:30 pm Lunch Break (included in full conference registration) 1:40 pm Mummy Berry Disease of Southern Blueberries: What Have We Learned During the Past Ten Years Harald Scherm, Univ. of Georgia 2:00 pm Reducing Microbial Contamination of Blueberry Fruit Annemiek Schilder, Michigan State Univ. 2:20 pm Commercial Propagation & Delivery of the Orchard Mason Bee for Cultivated Blueberry Pollination Blair Sampson, USDA-ARS, Poplarville, MS 2:40 pm A Recent History of Pesticide Use in New Jersey Blueberry Prodution Dean Polk, Rutgers Univ. 3:00 pm Refreshment Break 3:30 pm POSTER SESSION II (authors present at posters) Poster Number 1. Pruning and Mechanical Harvesting Southern Highbush and Rabbiteye Blueberries Elvin Andrews, Univ. of Georgia vii 2. Natural Enemies in Blueberry Rufus Isaacs, Michigan State Univ. 3. Fiber Content of Two Rabbiteye and Two Southern Highbush Cultivars Donna Marshall, USDA-ARS, Poplarville, MS 4. Development and Implementation of Reduced-risk Pest Management Programs for Blueberries in New Jersey Cesar Rodriguez-Saona, Rutgers Univ. 5. Fungicides and Fungicide Timing for Control of Blueberry Diseases Annemiek Schilder, Michigan State Univ. 6. Recent and Pending Blueberry Cultivar Releases Steve Stringer, USDA-ARS, Poplarville, MS 7. Evaluation of Southern Highbush Blueberry Cultivars for Forcing Culture in Japan Takato Tamada, Japan 8. Evaluating New Pre and Post Herbicides for Weed Control in Wild Blueberries David Yarborough, Univ. of Maine 9. New Rabbiteye Blueberry Varieties from The University of Georgia D. Scott NeSmith, Univ. of Georgia 5:30 pm-8:30 pm Quail and Chicken Supper at UGA Blackshank Lake and Picnic Shelter (included in full conference registration or daily registration with dinner) WEDNESDAY, JUNE 7, 2006 7:30 am Depart Post-conference Tour from Tifton Hotels THURSDAY, JUNE 8, 2006 7:00 pm Return from Post-conference Tour to Tifton Hotels viii Table of Contents Sensitivity Profitability Analysis for Growing Rabbiteye Blueberries in Georgia ………………………………………………………………………...…… 1 Esendugue Greg Fonsah The Role of Interspecific Hybridization in the North Carolina State University Blueberry Breeding Program ……………………………………………...………… 6 James R. Ballington, Susan D. Rooks, William T. Bland, and Arlen D. Draper Seasonal & Varietal Variation in Hardiness of Blueberry Flower Buds ……...….. 14 Eric Hanson and Jim Hancock Soil Characteristics Associated with Wild Huckleberry and Bilberry Colonies in the Northwestern United States: Implications for Managed Production and Cultivation …………………………………………………………………...…... 16 Danny Barney, Paul McDaniel and Anita Falen Evaluation of Two Organic Fertilizer Blends for Highbush Blueberry Production in Oregon …………………………………………………………...…… 32 Handell Larco, Wei Yang, and Bernadine Strik Nutrient Assessment Technologies for Wild Blueberry Production …………....… 39 David Percival and Robin Robinson Comparison of Irrigation Methods for Establishing Highbush Blueberry …...….. 47 David R. Bryla Environmental Losses of Soil Applied Nitrogen in Wild Blueberry Production ……………………………………………………………………….....… 55 G. Thyssen and D. Percival Effects of Raising Leaf Cu Concentrationon Growth and Yield of Lowbush Blueberry ………………………………………………………………..… 64 John M. Smagula Reducing Soil pH to Control Weeds in Wild Blueberries ……………………….… 73 David Yarborough and Kerry Guiseppe Parthenocarpic Fruit Development in Highbush Blueberry (Vaccinium corymbosum L. ) ……………………………………………………....… 82 Mark K. Ehlenfeldt Blueberry Production Increasing in Clinch County ……………………………..... 85 Elvin Andrews and Gerard Krewer ix Improved Methods of Replanting Blueberries in Established Fields …………..… 87 Elvin Andrews, Gerard Krewer, Greg Fonsah, James Jacobs, Danny Stanaland, Ben Mullinix, and James Clark Phytotoxicity of CPPU on Southern Highbush Blueberry in North Carolina ………………………………………………………………..…….... 91 Bill Cline and Benny Bloodworth Evaluation of Herbicides for Yellow and Purple Nutsedge (Cyperus esculentus and C. rotundus) and Annual Sedges Control (Cyperus
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