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Dong Liu, Ping Li, Jiulong Hu, Kunyuan Li, Zhenyu Zhao, Weiyan Wang, Jinyuan Zhang, Xu Ding, and Zhimou Gao

Phytophthora sojae is a destructive soilborne oomycete pathogen of soybean ( Glycine max ). Soybean phytophthora root and stem rot incited by P. sojae has been reported in Asia, Africa, Europe, North America, South America, and Oceania as soybean

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Ana Fita, Belén Picó, Rita C.S. Dias, and Fernando Nuez

situation, M. cannonballus is the pathogen most frequently associated with severe outbreaks of MVD. It has great virulence and produces severe root damage in artificial inoculation alone or combined with other fungi, comparable to that found in naturally

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Huan Hu, Nan Chai, Haoxiang Zhu, Rui Li, Renwei Huang, Xia Wang, Daofeng Liu, Mingyang Li, Xingrong Song, and Shunzhao Sui

maintained at least one original leaf or had no rot), rooting percentage (cuttings with at least 1 mm long roots), root number (only the roots that originated directly from the cuttings), and root length (average length of the longest root of each cutting

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S. Alan Walters and Elizabeth A. Wahle

lower leaf surface. Albugo candida can become systemic in the crown portion of the plant and will occasionally infect the root. Fall infestations cause more economic damage because this pathogen has the ability to suppress the vigorous root enlargement

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Naveen Hyder, James J. Sims, and Stephen N. Wegulo

Gaag, D.J. Wever, G. 2005 Conduciveness of different soilless growing media to Pythium root and crown rot of cucumber under near-commercial conditions Eur. J. Plant Pathol. 112 31 41 Waller, P.L. Thornton, C.R. Farley, D. Groenhof, A. 2008 Pathogens

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Don R. La Bonte, Christopher A. Clark, Tara P. Smith, Arthur Q. Villordon, and C. Scott Stoddard

than ‘Beauregard’. In California, plant production is similar to slightly less than ‘Covington’. Because it is very susceptible to bacterial root rot, presprouting should be conducted at 24 °C for extended period rather than higher temperatures for

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Hävard Eikemo, May B. Brurberg, and Jahn Davik

family ( Erwin and Ribeiro, 1996 ). The pathogen causes fruit rot, root and crown rot, cankers, leaf blights, wilt, and seedling blight ( Nienhaus, 1960 ). P. cactorum was first reported as the cause of crown rot of strawberry ( F . × ananassa Dutch

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Tomohiro Okada and Yoh-ichi Matsubara

both biotic factors ( Knaflewski et al., 2008 ; Wong and Jeffries, 2006 ) and abiotic factors ( Lake et al., 1993 ; Miller et al., 1991 ; Yong, 1984 ). As biotic factors, the most common phenomenon is fusarium crown and root rot caused by Foa

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Les D. Padley Jr, Eileen A. Kabelka, and Pamela D. Roberts

The oomycetous pathogen, Phytophthora capsici Leonian, is capable of causing several disease syndromes in cucurbits, including crown rot, foliar blight, and fruit rot ( Roberts et al., 2001 ; Zitter et al., 1996 ). Crown rot appears at the soil

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Sephra N. Rampersad

6 = dead plant. Isolation of the pathogen. The main root and a 10-cm section of the stem (at the soil line) of each plant were cut and prepared for re-isolation of the pathogen. Each tissue sample was rinsed with water under high pressure for