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Peter L. Sholberg and Paul Randall

inhibit mycelial growth and to avoid enhancing postharvest mold problems. Botrytis cinerea causes the postharvest disease known as gray mold and is considered one of the most important diseases of stored pears. Wounds or injuries are the primary

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Nathan Shoaf, Lori Hoagland and Daniel S. Egel

medium semiselective for Phytophthora and Pythium species (PSSM) ( Mazzola et al., 2001 ), and the percentage of root cuttings that exhibited mycelial growth was quantified 48 h after plating. Soil assays. Before laboratory analysis, soil samples were

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Oleg Daugovish, Hai Su and W. Douglas Gubler

sterile water. The conidial suspension was filtered through two layers of cheese cloth to remove mycelial fragments and was adjusted to 1.5 × 10 7 spores/mL using a hemacytometer (Hausser Scientific, Horsham, PA). Bare-root strawberry transplants were

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Marivi Colle, Elizabeth N. Straley, Stephanie B. Makela, Sue A. Hammar and Rebecca Grumet

resistant; 4 to 6 (i.e., moderate to extensive water-soaking and/or limited necrosis or mycelial growth), moderately susceptible; and 7 to 9 (i.e., moderate to extensive mycelium growth, sporulation, necrosis, and tissue collapse), highly susceptible. Fig. 1

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Yuji Nakata and Hidemi Izumi

) and in strawberry fruit ( Chambroy et al., 1993 ; Nielsen and Leufvén, 2008 ) to be an effective postharvest treatment to reduce or delay the development of B. cinerea . An in vitro study by García-Gimeno et al. (2002) reported that no growth of B

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Alexis K. Nagel, Guido Schnabel, Cesar Petri and Ralph Scorza

herbaceous and woody hosts and infestation by RKN can cause significant damage to Prunus in the form of stunted growth, loss of vigor, and early defoliation of 1- to 2-year-old trees when recommended management practices are not followed. Present management

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Kendra Baumgartner, Phillip Fujiyoshi, Greg T. Browne, Chuck Leslie and Daniel A. Kluepfel

woody perennial horticultural crops (e.g., stonefruits) ( Baumgartner et al., 2011 ). The pathogen kills and then decays woody roots, which in turn reduces crop yield and growth ( Baumgartner, 2004 ), inhibits nutrient and water uptake ( Baumgartner and

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Gang Lu, Wenlei Jian, Jiajing Zhang, Yijing Zhou and Jiashu Cao

might directly inhibit mycelial growth, and the reduction was not the result of either Na ion or an osmotic effect. In addition, the continuous feeding of Si to hydroponic-grown asparagus significantly decreased stem blight symptom development in the

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Kathleen Demchak

needed for mycelial growth and sporulation. The most striking point is that it was quite easy to grow plants in a pesticide-free system. The one exception to this trend of reduced disease incidence was with powdery mildew on strawberry. Growers also have

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Lina M. Rodríguez-Salamanca and Mary K. Hausbeck

spp. optimal mycelial growth occurs from 18 to 30 °C ( Dillard, 1988 ; Thomas et al., 2008 ; Thompson and Jenkins, 1985 ; Wharton and Diéguez-Uribeondo, 2004 ). Lesion formation and disease severity occur in a similar temperature range but vary