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Chad E. Finn, Bernadine C. Strik, Brian Yorgey, Robert R. Martin, and Margaret M. Stahler

‘Newberry’ is a new trailing blackberry ( Rubus subg. Rubus Watson) cultivar from the U.S. Department of Agriculture–Agricultural Research Service (USDA-ARS) breeding program in Corvallis, OR, released in cooperation with the Oregon State

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Chad E. Finn, Bernadine C. Strik, Brian M. Yorgey, and Robert R. Martin

‘Onyx’ is a new trailing blackberry ( Rubus subg. Rubus Watson) cultivar from the U.S. Department of Agriculture–Agricultural Research Service (USDA-ARS) breeding program in Corvallis, OR, released in cooperation with the Oregon Agricultural

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Fumiomi Takeda, Kathy Demchak, Michele R. Warmund, David T. Handley, Rebecca Grube, and Charles Feldhake

Strik (1997) reported canes and buds of western trailing ‘Marion’ blackberry survived temperatures as low as −9 °F in one year, but only to 16 °F in another year. In the field, floral buds of ‘Marion’ blackberry often suffer winter injury when

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Chad E. Finn, Bernadine C. Strik, Brian M. Yorgey, Mary E. Peterson, Jungmin Lee, Robert R. Martin, and Harvey K. Hall

‘Columbia Star’ is a new thornless, trailing blackberry ( Rubus subg. Rubus Watson) cultivar from the U.S. Department of Agriculture–Agricultural Research Service (USDA-ARS) breeding program in Corvallis, OR, released in cooperation with the

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Fumiomi Takeda and John Phillips

Fresh market blackberry production has increased in the United States in the last 10 years. Commercial acreage of erect and trailing blackberry has expanded most notably in California (M. Jimenez, personal communication) and of erect blackberry in

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Chad E. Finn, Bernadine C. Strik, Brian M. Yorgey, Mary E. Peterson, Patrick A. Jones, and Robert R. Martin

‘Columbia Sunrise’ is a new, very early ripening, thornless trailing blackberry ( Rubus subg. Rubus Watson) cultivar from the U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS) breeding program in Corvallis, OR, released in

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Chad E. Finn, Bernadine C. Strik, Brian M. Yorgey, Mary E. Peterson, Patrick A. Jones, Jungmin Lee, and Robert R. Martin

‘Columbia Giant’ is a new thornless trailing blackberry ( Rubus subg. Rubus Watson) cultivar with very large fruit from the U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS) breeding program in Corvallis, OR, released in

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Chad E. Finn, Bernadine C. Strik, Brian Yorgey, Michael Qian, Robert R. Martin, and Mary Peterson

‘Wild Treasure’ is a new trailing blackberry ( Rubus subg. Rubus Watson) cultivar from the U.S. Department of Agriculture–Agricultural Research Service (USDA-ARS) breeding program in Corvallis, OR, released in cooperation with Oregon State

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Renee H. Harkins, Bernadine C. Strik, and David R. Bryla

used for production of processed fruit. Trailing blackberries ripen in midsummer in Oregon and Washington and are usually machine-harvested ( Strik and Finn, 2012 ). Weed management is considered critical for good production in berry crops ( Barney et

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Bernadine C. Strik and Amanda J. Vance

About 6000 ha of blackberry ( Rubus L. subgenus Rubus , Watson) were harvested in the United States in 2012, with 42% of this production located in Oregon ( U.S. Department of Agriculture, 2014 ). Oregon is the leading producer of trailing