Efficacy of rue extract - sodium bicarbonate and fungicides at reduced rates for control of powdery mildew on tobacco [Nicotiana tabacum L. - Campania]
2000
Lahoz, E. | Contillo, R. | Nicoletti, R. (Istituto Sperimentale per il Tabacco, Scafati, Salerno (Italy)) | Oliva, A. (Naples Univ. (Italy). Dipartimento di Scienze della Vita)
إنجليزي. Greenhouse trials were carried out with the aim to evaluate the efficacy of rue (Ruta graveolens L.) extract, sodium bicarbonate at two rates (500 and 1,000 g/hl) and five fungicides at reduced doses to control powdery mildew of tobacco. Rue extract showed biological activity on conidia of E. orontii and provided a good disease control (up to 90%). Sodium bicarbonate was more effective at 1,000 g/hl, and no phytotoxic symptoms were observed on tobacco leaves after the applications. All the fungicides tested in the greenhouse trials were applied at half the rates suggested to control powdery mildew on other crops. Tebuconazole (10 g/hl), penconazole (3.75 g/hl), benomyl (25 g/hl) and bupirimate (37.5 g/hl) showed great efficacy at low doses of application. An inoculation method using 10*[5) conidia ml*[-1) suspended in 0.1% sterile water agar showed constant and reproducible results
اظهر المزيد [+] اقل [-]إيطالي. Sono state condotte in serra due prove allo scopo di valutare l'efficacia dell'estratto di ruta (Ruta graveolens L.), del bicarbonato di sodio (NaHCO3) (500 e 1.000 g/hl) e di cinque fungicidi a dosi ridotte contro l'oidio del tabacco (Erysiphe orontii). L'estratto di ruta ha dimostrato una buona efficacia e tossicita' sui conidi del fungo, cosi' come il bicarbonato di sodio alla dose di 1.000 g/hl, che non ha indotto alcun sintomo di fitotossicita' sulle foglie. Tutti i fungicidi saggiati in serra (tebuconazolo, penconazolo, benomyl e bupirimate) hanno evidenziato una buona efficacia. Inoltre e' stato messo a punto un sistema d'inoculazione altamente ripetibile per il binomio tabacco - Erysiphe
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Istituto di Servizi per il Mercato Agricolo Alimentare