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Reza Amiri, Kourosh Vahdati, Somayeh Mohsenipoor, Mohammad Reza Mozaffari, and Charles Leslie

blight susceptibility. Materials and Methods Seventy-one native walnut genotypes were selected from six valleys in Kerman province; Hanza (lat. 29.17° N, long. 57.11° E), Bezenjan (lat. 29.14° N, long. 56.41° E), Gougher (lat. 29.27° N, long. 56.37° E

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Dario J. Chavez, Eileen A. Kabelka, and José X. Chaparro

stage, producing damping-off, root rot, crown rot, foliar blight, and fruit rot symptoms ( Hausbeck and Lamour, 2004 ). Losses resulting from P. capsici in commercial production can reach 100%. Chemical, cultural, and mechanical practices have been

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Ebrahiem M. Babiker, Stephen J. Stringer, Hamidou F. Sakhanokho, Barbara J. Smith, and James J. Polashock

Blueberries rank as the second most important berry crop in North America with a total area of 96,869 ha ( Strik, 2006 ). As blueberry acreage increases, pathogen diversity and diseases become a more important issue. Stem blight, caused by the

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Amara R. Dunn, Lindsay E. Wyatt, Michael Mazourek, Stephen Reiners, and Christine D. Smart

pepper varieties with tolerance to the disease phytophthora blight, whereas it is less common on more susceptible varieties ( Kline et al., 2011 ). Phytophthora blight is a soilborne disease caused by the oomycete Phytophthora capsici ( Leonian, 1922

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Joseph J. Rothleutner, Ryan N. Contreras, Virginia O. Stockwell, and James S. Owen

characteristics. Although Cotoneaster generally is robust and easy to cultivate, many taxa are susceptible to the bacterial disease fire blight caused by Erwinia amylovora . Disease susceptibility limits the potential of the genus in landscape applications. For

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Joseph C. Kuhl, Kelly Zarka, Joseph Coombs, William W. Kirk, and David S. Douches

Late blight of potato incited by Phytophthora infestans is responsible for significant annual losses in North America ( Guenthner et al., 1999 ) and worldwide ( Hijmans, 2003 ). The effect of climate change on potato production ( Hijmans, 2003

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Katherine Bennett, Mary Vargo, Guido Schnabel, and James E. Faust

exhibit symptoms of Botrytis blight on flowers consisting of tan, necrotic spots that may coalesce and lead to tissue collapse. This phenomenon is termed petunia flower meltdown, and preventive fungicide applications are the primary management technique

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Richard O. Nyankanga, Ocen Modesto Olanya, Hans C. Wien, Ramzy El-Bedewy, John Karinga, and Peter S. Ojiambo

Late blight, caused by Phytophthora infestans (Mont.) de Bary, accounts for significant losses in potato production worldwide ( Erwin and Ribeiro, 1996 ). The pathogen infects foliage and tubers resulting in tuber yield loss attributable to

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Gabriele Gusmini, Luis A. Rivera-Burgos, and Todd C. Wehner

Gummy stem blight is a major disease of watermelon [ C. lanatus (Thunb.) Matsum. & Nakai]. It is caused by three genetically distinct Stagonosporopsis species, S. cucurbitacearum (syn. Didymella bryoniae ), S . citrulli , and S . caricae

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John M. Capik, Megan Muehlbauer, Ari Novy, Josh A. Honig, and Thomas J. Molnar

Eastern filbert blight, caused by the ascomycete fungus Anisogramma anomala , is an endemic disease of the wild American hazelnut, Corylus americana . This pathogen is associated with C. americana throughout its native range, which spans much of