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multilingual compendium of plant diseases

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20<br />

Avena sativa + Pseudomonas coronafaciens (Elliott) Stevens =<br />

ENGLISH Halo Blight<br />

FRENCH Tache Ar~ol6e, Bact6riose<br />

SPANISH Tiz6n de halo<br />

PORTUGUESE<br />

ITALIAN<br />

RUSSIAN nRTHSCTOCTL 6ypai 6a1cTepaj1,ian, 6axTepRo3 6ypEi (xpaoEUA) nATNCTO<br />

SCANDINAVIAN<br />

GERMAN Braune(rote) Fleckenbakteriose, Bakterielle Blattdarre<br />

DUTCH<br />

HUNGARIAN<br />

BULGARIAN 6axrepRo3a<br />

TURKISH<br />

ARABIC<br />

PERSIAN<br />

BURMESE<br />

THAI<br />

NEPALI<br />

HINDI<br />

VIETNAMESE<br />

CHINESE<br />

JAPANESE Kasagare-byb 6'5 VON<br />

The lesions are more common on leaves, but do occur on floral parts in severe late infections.<br />

The initial lesions are oval to oblong water-soaked small spots. The tissue surrounding the spots<br />

lose their green color and become slightly water-soaked and light yellow color. The light yellow<br />

zone forms a halo area around the brown lesions. As infection increases the lesions coalesce,<br />

forming an irregular halo area. The tissues dry out and fade to light brown and straw-colored<br />

mottling. No exudate is present on the lesions.<br />

Le lesiones se trova plus frequentemente in folios, ma occurre anque in partes floral in infectiones<br />

tarde e sever. Le lesiones initial es minute maculas saturate de aqua, de forma<br />

oval a oblonge. Le texito que circumcinge le maculas perde su color verde e deveni un pauc<br />

aquose e de color jalne clar. Le zona jalne clar forma un area de halo circurn le lesiones<br />

brun. Quando le infection se avantia, le lesiones coalesce, formante un area irregular de halo.<br />

Le texitos se desicca e lor color se attenua, deveniente un mixtura brunette e paleate. Nulle<br />

exsud ., es presente al lesiones.<br />

Les 16sions sont plus communes sur les leuilles, mais se produisent aussi ,ur les parties<br />

floraleslors des infections tardives graves. Les 1s ons initiales sont de petites taches d~lavpes,<br />

ovales h oblongues. Les tissus qui entourenf les taches perdent leur couleur verte et deviennent<br />

l~g~rement aqueux et de couleur jaun~tre. La zone jaune ple forme un halo autour des ldsions<br />

brunes. A mesure que l'infection avance, les lesions se fusionnent de fagon h former une<br />

ar6ole irr~guli~re. Les tissus se dess~chent et s'affadissent pour former une marbrilre de<br />

couleur brun pale . paille. I1 n'y a pas d'exsudat sur ces lesions.<br />

Las lesiones son m~s comunes en las hojas, pero tambi~n atacan las partes florales cn infecciones<br />

tard~ias severas. Las lesiones iniciales son pequeftas manchas ovaladas u oblrngas, empapadas<br />

de auga. El tejido que rodea las manchas pierde su color verde y se vuelve algo empapado<br />

en agua y de color amarillo p~lido. La zona amarillo claro forma un Area de halo alrededor de<br />

las lesiones cafm. A medida que aumenta la infeccimn las lesiones se van uniendo, formando un<br />

Area irregular de halo. Los tejidos se secan y se destiflen hasta adquirir un color cafd claro o<br />

paja moteado. No hay exudaciones en estas lesiones.<br />

DISTRIBUTION: Aust., Eur., N.A., S.A.

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