Evaluation of fungicides to control Rhizoctonia solani on basil [Ocimum basilicum - Liguria]
1997
Minuto, G. (Centro Regionale di Sperimentazione e Assistenza Agricola, Albenga, Savona (Italy)) | Mocioni, M. (Turin Univ. (Italy). Dipartimento di Valorizzazione e Protezione delle Risorse Agroforestali) | Garibaldi, A.
Seven experimental trials to control Rhizoctonia solani on basil (Ocimum basilicum) were carried out during 1994-1996 years. The following fungicides were tested: dicloran, registered for foliar treatments, benomyl and tolclofos methyl, admitted for seed dressing, and iprodione. The biological control agent Trichoderma sp. was tested too. Tolclofos methyl, mixed to the soil or distributed by drenching, showed an high effectiveness at low dosages (0.25 g of a.i./square m); also seed dressing with the same fungicide was very effective to control the pathogen (20 and 30 g of a.i./kg of seed). Benomyl, used as seed dressing ( 20 and 30 g of a.i./kg of seed), dicloran (4 g of a.i./square m), iprodione (3 and 4 g of a.i./square m) and Trichoderma sp. (10* (5) and 10* (6) CFU/ml of soil), were only partially active against the pathogen. Good control was obtained by using in combination Trichoderma (10* (6) CFU/ml of soil) and a reduced dosage of tolclofos methyl (0.25 g of p.a./square m). Tolclofos methyl, at dosages higher than 0.25 g of a.i./square m, controlled, also attacks caused by Sclerotinia sclerotiorum in the last trial
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