Field control of industrial tomato bacterial spot in Sardinia. The efficacy of acibenzolar-S-methyl (CGA245704), a plant activator that induces systemic acquired resistance, in controlling bacterial spot (Xanthomonas campestris pv. vesicatoria) was evaluated on industrial tomato in field trials carried out in Sardinia in the period 2001-2002. Treatments were performed by using both registered and experimental compounds. The efficacy of acibenzolar-S-methyl, alone or with copper hydroxide mixture, was compared with other chemicals. In particular, a better control of the disease was obtained by acibenzolar-S-methyl than using others bactericides. The lowest protection was provided by copper hydroxide. Its effectiveness was equivalent to that of phosethyl-Al. Hydroxyquinoline sulfate gave a control of bacterial spot statistically similar to the mixture acibenzolar-S-methyl/copper hydroxide. The mixture copper hydroxide-mancozeb gave a control of bacterial spot similar to phosethyl-Al. Finally, acibenzolar-S-methyl in combination with copper hydroxide did not offer better control of bacterial spot compared with acibenzolar-S-methyl used alone.
In prove di campo condotte nel 2001-2002 è stata saggiata, su pomodoro da industria, l’attività dell’acibenzolar-S-methyl (CGA245704), “attivatore vegetale” capace di indurre resistenza sistemica, per il controllo della maculatura batterica (Xanthomonas campestris pv. vesicatoria). Nella biennio di sperimentazione sono stati utilizzati prodotti sia registrati sia non autorizzati sulla coltura. L’efficacia dell’acibenzolar-S-methyl, da solo o in miscela con idrossido di rame è stata valutata in confronto con altri battericidi. Dai risultati ottenuti è emerso che il miglior controllo della maculatura batterica è stato ottenuto con l’acibenzolar-S-methyl. Per contro, l’idrossido di rame è stato quello che ha manifestato la minore efficacia. La sua azione poteva essere, tuttavia, assimilata a quella fornita dal fosetil alluminio. L’idrossichinolin solfato ha fornito un’azione statisticamente paragonabile alla miscela acibenzolar-S-methyl/idrossido di rame. L’azione dell’idrossido di rame in miscela con mancozeb, seppure limitata ad un solo anno di prova, poteva essere paragonata a quella fornita dal fosetil alluminio. Infine, l’acibenzolar-S-methyl in miscela con l’idrossido di rame non ha fornito un’efficacia paragonabile a quella ottenuta quando è stato usato da solo
Esperienze di lotta alla maculatura batterica del pomodoro da industria in Sardegna / Fiori, Mario; Giordano, P.; Virdis, S.. - In: INFORMATORE FITOPATOLOGICO. - ISSN 0020-0735. - LIV:6(2004), pp. 46-51.
Esperienze di lotta alla maculatura batterica del pomodoro da industria in Sardegna
FIORI, Mario;
2004-01-01
Abstract
Field control of industrial tomato bacterial spot in Sardinia. The efficacy of acibenzolar-S-methyl (CGA245704), a plant activator that induces systemic acquired resistance, in controlling bacterial spot (Xanthomonas campestris pv. vesicatoria) was evaluated on industrial tomato in field trials carried out in Sardinia in the period 2001-2002. Treatments were performed by using both registered and experimental compounds. The efficacy of acibenzolar-S-methyl, alone or with copper hydroxide mixture, was compared with other chemicals. In particular, a better control of the disease was obtained by acibenzolar-S-methyl than using others bactericides. The lowest protection was provided by copper hydroxide. Its effectiveness was equivalent to that of phosethyl-Al. Hydroxyquinoline sulfate gave a control of bacterial spot statistically similar to the mixture acibenzolar-S-methyl/copper hydroxide. The mixture copper hydroxide-mancozeb gave a control of bacterial spot similar to phosethyl-Al. Finally, acibenzolar-S-methyl in combination with copper hydroxide did not offer better control of bacterial spot compared with acibenzolar-S-methyl used alone.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.