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Chandrasekar S. Kousik, Amnon Levi, Kai-Shu Ling, and W. Patrick Wechter

inoculation, seedlings were rated on a 1 to 9 severity scale described by Thomas et al. (2005) . The 1 to 9 scale was based on increasing disease severity where 1 = no evidence of infection, 2 = trace infection of cotyledons only, 3 = low infection of

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Gary E. Vallad, Kenneth L. Pernezny, Botond Balogh, Aimin Wen, Jose Francisco L. Figueiredo, Jeffrey B. Jones, Timur Momol, Rosa M. Muchovej, Nikol Havranek, Nadia Abdallah, Steve Olson, and Pamela D. Roberts

incorporation into integrated disease management programs ( Fravel, 2005 ). Bacteriophages have recently shown to be effective alternatives to the standard copper bactericides, reducing disease severity of bacterial spot and enhancing yields in field trials

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Ying Li, Liyi Zhang, Zhen Zhang, Peihua Cong, and Zong-Ming Cheng

alternaria resistance and susceptibility. The trees were grown in an experimental orchard of the Institute of Pomology, Chinese Academy of Agricultural Sciences [Xingcheng, China (lat. 40°37′ N, long. 120°44′ E)]. Based on general disease severity in 2007

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Barrett R. Gruber, Libby R.R. Davies, and Patricia S. McManus

The fungus Blumeriella jaapii [anamorph Phloeosporella padi (Lib.) Arx] incites cherry leaf spot (CLS), a serious disease of tart cherry ( Prunus cerasus ) in the Great Lakes region of North America ( Jones, 1995 ) and Europe ( Annesi et al

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Jozer Mangandi, Sydney Park Brown, and Natalia Peres

quality and flower coverage were obtained with the FREQ procedure in SAS (version 9.2; SAS Institute, Cary, NC). Disease severity ratings for both diseases were analyzed by obtaining the area under the disease progress curve (AUDPC) according to Madden

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Eugene K. Blythe, Cecil Pounders, Michael Anderson, Earl Watts, and Barbara Watts

greenhouse study in Georgia ( Mueller et al., 2003 ) based on our analysis ( Table 3 ). Also, there was a tendency for earlier-blooming cultivars in this survey to have higher ratings for disease severity than later-blooming cultivars ( Table 4 ) and a

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Derek W. Barchenger, Sopana Yule, Nakarin Jeeatid, Shih-wen Lin, Yen-wei Wang, Tsung-han Lin, Yuan-li Chan, and Lawrence Kenyon

. Differences in disease rating by location were also found ( Table 1 ), with the overall disease ratings being higher at Khon Kaen compared with Kamphaeng Saen ( Fig. 1 ). The differences in entry symptom severity between locations highlights the importance of

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Narinder P.S. Dhillon, Supannika Sanguansil, Supornpun Srimat, Suwannee Laenoi, Roland Schafleitner, Michel Pitrat, and James D. McCreight

determined by a hemocytometer. Disease severity 30 days’ postinoculation was rated on the first five true leaves of individual 50-day-old plants using a 0 to 5 visual rating scale, where 0 = free from fungal infection; and 1 = 1% to 10%, 2 = 11% to 25%, 3

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Nagehan D. Köycü, John E. Stenger, and Harlene M. Hatterman-Valenti

production systems because it works relatively well under low inoculum conditions early in the season and will help to reduce applications of more effective but more resistance-prone material later in the season during peak disease infection ( Savocchia et al

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Abbasali Ravanlou and Mohammad Babadoost

fruit was assessed by naked eyes and it was percent leaf or fruit area with bacterial lesions. Severity of the disease in each field was calculated by adding percent areas of leaves or fruit with bacterial spots and then dividing by number of leaves or