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- W2046372223 abstract "Harding grass (Phalaris aquatica; syn. P. tuberosa) is a perennial grass found throughout most of the pampas plains in Argentina. It is a particularly valuable plant, commonly used as a nutritious forage grass and also for hay and silage. Since 2004 leaf symptoms have been observed on harding grass across the agricultural area of Buenos Aires Province. Oval, elongated, dark red lesions appeared on lower leaves. As lesions enlarged, they tended to become dark brown to reddish-brown blotches, usually with pointed ends and buff centres. Pycnidia were observed between the leaf veins on dead leaves. Isolates obtained from typical lesions on harding grass were identified as Stagonospora foliicola. Pycnidia were globose-aplanate, grey to light brown and ostiolate. Conidia were hyaline, thin-cylindrical, straight to gently curved, with six to eight septa per spore. The average dimensions of 50 pycniospores were 47·96 × 3·75 µm (Sprague, 1950). Pathogenicity tests were conducted in a greenhouse. Harding grass var. El Gaucho was inoculated with a conidial suspension of S. foliicola (1 × 106 conidia per mL). Typical lesions developed on artificially inoculated leaves after 14 days and S. foliicola was consistently recovered. The isolate of S. foliicola from harding grass was deposited at the Centro de Investigaciones de Fitopatología Culture Collections, Universidad Nacional de La Plata, Argentina, as SFB0104. The fungus has been reported in other countries on Agrostis, Calamagrostis, Cinna, Glyceria, Phalaris and Poa (Sprague, 1950; Zeiders, 1975; Farr et al., 1989). The disease is also known to occur on Phalaris arundinacea (reed Canary-grass) in Australia, Europe and North America (Watson et al., 2000). Several diseases of Phalaris spp. are known but rarely cause severe damage (Watson et al., 2000). This is the first record of S. foliicola in Argentina. The extent and importance of this disease in the Buenos Aires Province and the rest of Argentina is not yet known." @default.
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- W2046372223 date "2007-08-01" @default.
- W2046372223 modified "2023-10-07" @default.
- W2046372223 title "First report of Stagonospora foliicola on harding grass (Phalaris aquatica) in Argentina" @default.
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- W2046372223 doi "https://doi.org/10.1111/j.1365-3059.2007.01596.x" @default.
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