APPLICATIONS OF SUBLIMATED SULPHUR TO CONTROL FUNGAL DISEASES AND ARTHROPOD PESTS ON PROTECTED CROPS IN SICILY - Trials aiming at evaluating the efficacy of sulphur, sublimated by means of electric devices, in the control of the main diseases and arthropod pests of protected tomato crops were conducted in Sicily, both in biological and integrated conditions. The advantages compared to traditional distribution methods are the better efficacy on noxious organisms, reduced labour cost, smaller quantity of sulphur employed and minor pesticides residues on fruits. The data obtained showed that the new technique used to apply sulphur is very effective in controlling powdery mildew while a bit less effective in containing infections by other fungal pathogens, on some of which it has a delaying effect. Arthropod pests were controlled satisfactorily, mainly at low population densities. The best results were obtained on the Tomato russet mite, although a good efficacy was also recorded on leafminers and whiteflies, whose control caused a reduction in the viral infections.
La ricerca ha riguardato la valutazione dell’efficacia dello zolfo sublimato erogato tramite dispositivi elettrici (sublimatori) nei confronti dei principali patogeni e fitofagi del pomodoro in colture protette a conduzione biologica o integrata in Sicilia. I vantaggi rispetto alle applicazioni tradizionali sono legati alla maggior attività nei confronti degli agenti dannosi, al minor costo della manodopera, all’esiguo quantitativo di zolfo utilizzabile e alla relativa riduzione dei residui dell’agrofarmaco sulle bacche. I risultati mostrano una considerevole efficacia nei confronti dell’oidio, cui seguono altri patogeni epigei, per alcuni dei quali si ottiene tuttavia solo un differimento temporale delle infezioni. Inoltre, la tecnica ha rivelato un’apprezzabile azione nel contenimento dei fitofagi, soprattutto a bassi livelli di popolazione. I risultati più evidenti sono stati ottenuti nei confronti dell’acaro rugginoso del pomodoro. Soddisfacente è comunque stata l’efficacia nei confronti degli agromizidi e soprattutto degli aleirodi con la conseguente riduzione delle infezioni virali.
Zolfo sublimato per il controllo di malattie e fitofagi delle orticole in Sicilia
RAPISARDA, Carmelo;SISCARO, Gaetano;TROPEA GARZIA G;ZAPPALA', LUCIA;POLIZZI, Giancarlo
2010-01-01
Abstract
APPLICATIONS OF SUBLIMATED SULPHUR TO CONTROL FUNGAL DISEASES AND ARTHROPOD PESTS ON PROTECTED CROPS IN SICILY - Trials aiming at evaluating the efficacy of sulphur, sublimated by means of electric devices, in the control of the main diseases and arthropod pests of protected tomato crops were conducted in Sicily, both in biological and integrated conditions. The advantages compared to traditional distribution methods are the better efficacy on noxious organisms, reduced labour cost, smaller quantity of sulphur employed and minor pesticides residues on fruits. The data obtained showed that the new technique used to apply sulphur is very effective in controlling powdery mildew while a bit less effective in containing infections by other fungal pathogens, on some of which it has a delaying effect. Arthropod pests were controlled satisfactorily, mainly at low population densities. The best results were obtained on the Tomato russet mite, although a good efficacy was also recorded on leafminers and whiteflies, whose control caused a reduction in the viral infections.File | Dimensione | Formato | |
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