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Outbreak of Erwinia carotovora on Zantedischia spp. in South Africa.
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In South Africa, summer-flowering Arum lilies are grown for the tuber, potted plant, and cut flower markets. In 1998, an outbreak of soft rot was detected on Zantedischia oculata cv. Black Magic and Z. elliottiana plants from several nurseries. Crop losses of up to 25% were incurred. The initial
Methods for identification of flavobacteria.
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Published reports disagree on the best features for detecting and distinguishing between Flavobacterium meningosepticum (biovar IIa) and Flavobacterium species CDC group IIb (biovar IIb; Flavobacterium indologenes). This report discloses that at least some of these disagreements may reflect the
Occurrence of Bacterial Leaf Spot of Escarole Caused by Pseudomonas cichorii in the Everglades Agricultural Area of Southern Florida.
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In the fall of 1997, 1998, and 2000, a leaf spot disease of escarole (Cichorium endivia L.) was widespread among commercial plantings in the Everglades Agricultural Area (EAA), south and east of Lake Okeechobee, FL. Symptoms consisted of dry, dark gray-to-black lesions that expanded to ≈4 cm in
Wildfire of Soybean Caused by Pseudomonas syringae pv. tabaci, a New Disease in Korea.
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In 2006 and 2007, a new bacterial disease was observed in field-cultivated soybeans in Boeun District and Munkyung City of Korea. The disease caused severe blighting of soybean (Glycine max) leaves. Soybean leaves in fields showed yellowish spots with brown centers. Brown and dead areas of variable
Brenneria salicis Associated with Watermark Disease Symptoms on Salix alba in Italy.
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From 1999 to 2010, withering of white willow was observed on trees growing along roads or irrigation canals in Torino, Alessandria, and Vercelli provinces of Italy, with incidence varying from 15, 25, and 30%, respectively. In spring and autumn 2008, six samples from withering branches with bark
First Report of Agrobacterium rubi and A. rhizogenes Causing Crown and Root Gall and Hairy Root on Blueberry in Argentina.
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From 2006 to 2009, crown gall and hairy root symptoms were observed on blueberry (Vaccinium corymbosum cvs. O'Neil, Millennia, and Misty) plants from six nurseries in Tucumán, Concordia, Pilar, Morón, and Baradero, Argentina. Bacteria were isolated from galls of all three cultivars and from hairy
First Report of Pseudomonas cichorii Associated with Leaf Spot on Soybean in South Korea.
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Unusual symptoms were observed on 5% of the soybean (Glycine max (L.) Merill) plants in commercial fields in South Korea in September 2008 and 2009. The lesions were at first water soaked, then enlarged and turned dark brown or black, often with concentric white rings and sometimes surrounded by a
First Report of Pseudomonas cichorii Causing Leaf Spot of Vegetable Sponge Gourd in China.
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A suspect bacterial leaf spot on vegetable sponge gourd (Luffa cylindrical (L.) Roem.) was found in a commercial greenhouse in Pi County, Chengdu City, Sichuan Province, China, in February 2011. Approximately 20 to 30% of plants were affected, causing serious economic loss. Symptoms occurred only on
First Report of Bacterial Leaf Spot of Basil Caused by Pseudomonas viridiflava in Argentina.
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In June 1998, during a cool, humid period, typical bacterial spot symptoms were observed on basil plantlets (Ocimun basilicum L. 'Royal Louis' and 'Zaes') in a commercial greenhouse in La Plata, Argentina. Affected plants had dark brown to black lesions on cotyledons. Spots on leaves were first
Watermelon as a New Host of Pseudomonas viridiflava, Causal Agent of Leaf and Stem Necrosis, Discovered in Turkey.
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Severe leaf and stem necrosis symptoms were observed on watermelon seedlings (Citrullus lanatus cv. Euroca) in Adana, Turkey during a warm and humid period in January 2004. Streak-plate isolations were made from leaf and stem lesions on King's medium B. A fluorescent, yellowish mucoid,
First Report of Pectobacterium carotovorum Causing Soft Rot of Opium Poppy in Spain.
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Opium poppy (Papaver somniferum L.) is an economically important pharmaceutical crop in Spain. Approximately 8,000 ha are cultivated annually in southern and central Spain. To improve yields, opium poppy cultivation is expanding to more humid or irrigated areas of Spain. In the springs of 2005 and
First Report of Soft Rot of Potatoes Caused by Dickeya dadantii in Zimbabwe.
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A survey was carried out in the potato- (Solanum tuberosum L.) growing regions of Zimbabwe in April 2009 to assess the prevalence of bacterial soft rot. A total of 125 tubers with soft rot symptoms were collected. The disease caused severe economic losses ranging from 20 to 60% on tubers in the
La base de données d'herbes médicinales la plus complète soutenue par la science
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