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Ed Stover, Chandrika Ramadugu, Mikeal Roose, Joseph Krystel, Richard F. Lee, and Manjunath Keremane

nutrients were included periodically, but none that were considered to have any effects on canker. Assessing ACC sensitivity. Formation of foliar lesions indicative of ACC is affected by stage of leaf development when exposed to Xcc ( Gottwald and

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Chandrasekar S. Kousik, Kai-Shu Ling, Scott Adkins, Craig G. Webster, and William W. Turechek

Phytophthora capsici. Resistance in these germplasm lines is expressed as significantly reduced to practically no lesion development, rot, or pathogen sporulation on the fruit compared with large lesions, severe rot, and heavy sporulation on commercial

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W. Patrick Wechter, Amnon Levi, Kai-Shu Ling, Chandrasekar Kousik, and Charles C. Block

, often with chlorotic halos. On older leaves, the necrosis can often be seen on the leaf margins followed by disease development along major veins. The pathogen also can affect the stems and hypocotyls of the emerging seedling, causing a damping

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Rita L. Hummel, Marianne Elliott, Gary Chastagner, Robert E. Riley, Kathy Riley, and Annie DeBauw

between N application rates and disease development. Specifically, we tested the hypothesis that higher N fertility would result in increased disease incidence and severity. Materials and Methods Plant material. Three rhododendron cultivars shown to vary

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Mohammed B. Tahboub, Soumaila Sanogo, Paul W. Bosland, and Leigh Murray

the plant stem is indicated by dark purplish lesions close to the soil surface. As the disease progresses, lesions rapidly coalesce and completely girdle the stem. Chile pepper fruit become infected during prolonged periods of heavy rain and high

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David C. Zlesak, Darcy Ballantyne, Matthew Holen, Andrea Clark, Stan C. Hokanson, Kristen Smith, Jason D. Zurn, Nahla V. Bassil, and James M. Bradeen

inconsistencies, the boxes for each inoculation date for Knock Out ® were observed until day 25 to note whether additional leaves developed lesions and to watch for further development of the lesions that did develop. No additional lesions developed other than

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James C. Fulton and Mark E. Uchanski

a deeper understanding of the disorder leading to effective treatments and additional preventive measures instead of repeating previously conducted, yet difficult to obtain, studies. Description of Lesions Symptoms of stip appear as pale to dark

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Chandrasekar S. Kousik, Jennifer L. Ikerd, Patrick Wechter, Howard Harrison, and Amnon Levi

varied greatly among the PI. Fig. 1. Phytophthora fruit rot development on watermelon fruit of a susceptible PI. Agar plug from an actively growing colony of Phytophthora capsici was placed on top of the fruit as the inoculum (center). Large lesion

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Sean M. Westerveld, Alan W. McKeown, and Mary Ruth McDonald

suspension. Leaf senescence was rated before inoculation using the 0 to 10 scale but assessed on the entire foliage per plant. The number of ALB lesions per leaf was counted 4 weeks after inoculation as a result of delayed symptom development in this trial

Open access

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

stem blight lesion development on detached blueberry stems Acta Hort. 1180 61 70 Strik, B.C. 2006 Blueberry production and research trends in North America Acta Hort. 715 173 183 Tamura, K. Stecher, G. Peterson, D. Filipski, A. Kumar, S. 2013 Molecular