
handle: 11391/924138
Viene segnalata per la prima volta in Italia, la presenza di Septoria helianthi Ell. & Kell. su girasole (Helianthus annuus L.), cultivar Gloriasol. La malattia diffusa su un gran numero di piante, si presentava sottoforma di tacche necrotiche irregolari o poligonali circondate da un alone clorotico e procedeva gradualmente dalle foglie basali verso quelle dei palchi superiori. Le particolari condizioni climatiche (abbondanti piogge e basse temperature primaverili) e l'uso di semente infetta vengono considerate le cause principali per l'introduzione e la diffusione del parassita
Girasole; Helianthus annuus; Septoriosi; Septoria helianthi
Girasole; Helianthus annuus; Septoriosi; Septoria helianthi
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