2004 Robinson Station Blueberry Cultivar

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Information about 2004 Robinson Station Blueberry Cultivar
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Published on December 18, 2008

Author: aSGuest7092

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2004 Robinson Station Blueberry Cultivar Trials : 2004 Robinson Station Blueberry Cultivar Trials Prepared by: Charles Tyron Back and Terry Jones Department of Horticulture University of Kentucky, Robinson Station Blueberry Facts : Blueberry Facts Native fruits to Kentucky. Limited acreage now. (Good time to get started.) Medical Research shows healing properties High startup costs (approx. $4,000/A). Large profits possible Low maintenance Blueberry Research at Robinson Station : Blueberry Research at Robinson Station Two sites Robinson Station (Quicksand, KY) Reclaimed Surface Mine (Laurel Fork, KY) Blueberry bushes were planted in 1996 Growth, yield, and survival of 21 cultivars A randomized block design Plants are 4 ft. apart in raised beds 14 ft. apart. Blueberry Research at Robinson Station : Blueberry Research at Robinson Station Drip irrigation with point source emitters. 2 gph/plant 10-20 gpp/week during hot summer months Trellising utilized for netting Nets were placed two weeks before first harvest Nets were removed after last harvest Pollination : Pollination Insect pollinators required. Bumblebees are best Need 4 to 8 bees / bush at 1 time during warmest part of day Bring bees when 5% of flowers open 2004 Soil Test Prior to Fertilization : 2004 Soil Test Prior to Fertilization pH Laurel Fork – 5.11 Quicksand – 4.4 Buf. pH LF – 6.83 QS – 5.63 P LF – 45 QS - 207 K LF – 258 QS – 364 Ca LF – 1062 QS – 718 Mg LF – 477 QS - 103 Zn LF - 12.6 QS – 6.6 Fertilization Methods : Fertilization Methods Plants were fertilized beginning in the spring of 1997. In 2004, one application of 5-20-20 (5lb./100 ft. of row) Followed by one side-dressing of 5 lb. ammonium sulfate/50 ft. row at bloom and 5 lb of sulfur coated urea/row two weeks later. After harvest in July 0.2 lb. urea/50 ft row was fertigated on twice. Site Comparison : Site Comparison Quicksand, KY Normal silt loam site More problems with phytophthora Sawdust Mulch Irrigation from North Fork of KY River Laurel Fork Disturbed mine site 750 ft. higher elevation than Quicksand Better air drainage Bark chips for mulch Low residual nitrogen levels Irrigation from remote pond Production : Production Began harvesting blueberries in 2000 Harvested about once a week during production seasons Production begins around June 1st and ends around July 15th. 2004 Blueberry Harvest : 2004 Blueberry Harvest All blueberries were hand picked in 2004. Provide excellent job opportunities for high school students. Harvest began around June 1st, 2004 and ended around July 15th, 2004. 2004 Blueberry Harvest : 2004 Blueberry Harvest Each bush was harvested and weighed individually. Laurel Fork – 35 day harvest season Quicksand – 41 day harvest season Blueberry Trellis, Quicksand Ky : Blueberry Trellis, Quicksand Ky Slide 13: Materials Iron Deficiency : Iron Deficiency Young leaves near shoot tips Not always related to iron levels High pH Poor drainage Excessive soil P levels At Quicksand soil P was 207 Slide 15: Blueberry Harvest Season Quicksand Site *NC1827, NC1832, and Ozark Blue had no harvest results in the first two harvests. Slide 16: Blueberry Harvest Season Quicksand Site *NC1827, NC1832, and Ozark Blue had no harvest results in the first two harvests. Slide 17: Blueberry Harvest Season Laurel Fork Site * Ozark Blue had no harvest results in the first two harvests. Slide 18: Blueberry Harvest Season Laurel Fork Site * Ozark Blue had no harvest results in the first two harvests. 2004 Pounds per Bush : 2004 Pounds per Bush 2004 Pounds per Bush : 2004 Pounds per Bush 2004 Pounds per Bush : 2004 Pounds per Bush Cumulative blueberry yield for Quicksand and Laurel Fork plantings, 2000-2004. : Cumulative blueberry yield for Quicksand and Laurel Fork plantings, 2000-2004. * These cultivars are 1 year younger than the other cultivars in the trial. Cumulative blueberry yield for Quicksand and Laurel Fork plantings, 2000-2004. : Cumulative blueberry yield for Quicksand and Laurel Fork plantings, 2000-2004. * These cultivars are 1 year younger than the other cultivars in the trial. Cumulative blueberry yield for Quicksand and Laurel Fork plantings, 2000-2004. : Cumulative blueberry yield for Quicksand and Laurel Fork plantings, 2000-2004. * These cultivars are 1 year younger than the other cultivars in the trial. ’04 Farmers Market Prices* : ’04 Farmers Market Prices* *Prices provided by Matt Ernst, UK Ag Economics. Production Comparison : Production Comparison Quicksand Total lbs. produced – 760.5 lbs. 12 rows with approx. 13 plants per row or 0.2 acres 1,014 pts. X $3.50*/pint = $3549.00 $17,745 per acre Laurel Fork Total lbs. produced – 1115 lbs. 10 rows with approx. 13 plants per row or 0.17 acres 1,487 pts x $3.50*/pint = $5204.50 $30,602 per acre * Lexington Farmers Market price. Other prices may be higher. Value Added Products : Value Added Products Great potential for value added products with blueberries. Jams & Jellies Pies & Muffins Wine Blueberry Jam : Blueberry Jam 5 varieties grown at Robinson Station (Quicksand) were made into jam. Berries were evaluated using identical jam recipe. Blind taste tests were given at several extension events. (approx. 200 people) 2003 Jam Results : 2003 Jam Results Variety Yield Appearance Texture Flavor Duke 7 -8oz. jars excellent good sweet NC 1827 6.5 - 8oz. jars excellent smooth sweet NC 1832 7 - 8 oz. jars visible berries good, seedy berry flavor Sampson 7 - 8 oz. jars runny gritty too sweet NC 2852 7 -8oz. jars excellent seedy very good Duke and NC 1827 were chosen best overall berries for jam production in the categories of appearance, texture and flavor. Problems we’ve encountered : Problems we’ve encountered Fruiting in the fall NC 1832 tends to flower heavily and set fruit in the fall. Could be a characteristic of an ancestor Phytophthora root rot Only experienced at Quicksand site. Could be due to irrigation from North Fork of KY River. More susceptible varieties include Duke and Jersey Iron chlorosis vs manganese toxicity Can confuse iron chlorisis with manganese Problems we’ve encountered : Problems we’ve encountered Japanese beetles Usually come near end of harvest No spray program recommended Birds Bird control is subject to state laws. Visual repellents like plastic hawks, and owls have been used Audio alarms help reduce bird problems Netting tends to be best at reducing problems

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