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Rachel E. Rudolph, Thomas W. Walters, Lisa W. DeVetter, and Inga A. Zasada

An important component for the sustainable production of red raspberry in the Pacific northwestern United States [PNW (includes Washington and Oregon)] is the use of winter cover crops before establishing the next planting. Because of the limited

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M. Joseph Stephens, Peter A. Alspach, Ron A. Beatson, Chris Winefield, and Emily J. Buck

The New Zealand Institute for Plant & Food Research Limited and Northwest Plant Company have developed a raspberry breeding program based in Whatcom County, WA, that is focused on developing new machine-harvested cultivars suited to processing

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Maria E. Cramer, Kathleen Demchak, Richard Marini, and Tracy Leskey

throughout the area east of the Mississippi River, and have several populations outside this range, threatening West Coast agriculture ( Davis, 1920 ; Hungate et al., 2016 ; Potter and Held, 2002 ). Although Japanese beetle is polyphagous, raspberry is a

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David Trinka and Marvin Pritts

Tissue-cultured (TC) plantlets are becoming the preferred planting stock for raspberry growers because of their uniformity, ease of handling, general vigor and disease status. However, previous studies have shown that TC plants are sensitive to many preemergent herbicides and to cultivation within several weeks after planting. ln addition, little is unknown about handling practices for TC plants relative to conventionally propagated plants during the establishment year. We subjected TC raspberries cv. Heritage to different management practices during the establishment year and monitored plant performance over two years to determine if better recommendations could be made for TC plantlets. One set of management practices examined weed control, and treatments included straw mulch, black polyethylene mulch, white on black polyethylene match, napropamide herbicide, simazine herbicide, hand weeding, and an untreated control. A second factor was fertilizer placement, with calcium nitrate applied on the soil surface around the plant or placed in the planting hole. A third factor was row cover application during the first six weeks of growth. Significant differences in soil moisture, soil temperature, plant growth, and yield occurred among the 22 treatments, and results suggested that TC plants require a different set of management practices than conventional propagules.

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Justine E. Vanden Heuvel and Kimberly Lewers

programs? The articles published here provide information on breeding, producing, and marketing repeat-fruiting small fruit crops using day-neutral strawberry, primocane-fruiting blackberry, and primocane-fruiting raspberry as examples.

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Patrick P. Moore

The relationships among raspberry (Rubus spp.) clones were investigated using southern hybridization. Total DNA from 22 clones were digested with Bam III and Eco RI and hybridized with two sequences from a Pst I tomato (Lycopersicon esculentum Mill.) chloroplast library. A total of 40 different restriction fragments were distinguished for the four enzyme probe combinations. These fragments distinguished seven groups of clones with members of each group having identical fragment patterns. Clones with R. idaeus L. maternal ancestry were distinct from those with R. occident&s L. or R. parvifolius L. ancestry. Differences were detected between R. idaeus vulgatus Arrhen. and R. idaeus strigosus (Michx.). No commercial cultivars had chloroplast DNA patterns that were the same as an accession of the R. idaeus strigosus subspecies.

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

‘Kokanee’ ( Fig. 1 ) is a new primocane-fruiting red raspberry ( Rubus idaeus L.) from the U.S. Dept. of Agriculture–Agricultural Research Service (USDA–ARS) breeding program in Corvallis, OR released in cooperation with the Oregon State

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Eric Hanson, Mike Von Weihe, Annemiek C. Schilder, Ann M. Chanon, and Joseph C. Scheerens

Per capita consumption of fresh raspberries is increasing in the United States [ U.S. Department of Agriculture (USDA), 2010 ], but nearly all of the new production to meet demand occurred in coastal areas of California ( Gaskell, 2004 ; Pollack

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Bernadine C. Strik and David R. Bryla

Caneberries (raspberry and blackberry) are important crops in the United States with a reported 11,900 acres of blackberry in 2005 ( Strik et al., 2007 ) and 16,400 and 1650 acres of red and black raspberry in 2014, respectively [ U.S. Department of

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Mustafa Ozgen, Faith J. Wyzgoski, Artemio Z. Tulio Jr, Aparna Gazula, A. Raymond Miller, Joseph C. Scheerens, R. Neil Reese, and Shawn R. Wright

., 1999 ), and processing ( Zafrilla et al., 2001 ). Within Rubus , black raspberries ( Rubus occidentalis L.) have been extensively examined as potential chemopreventive agents for various forms of aerodigestive cancers ( Stoner et al., 2007 ). Early