Le misure previste da Berna per contrastare la drosophila suzukii, il moscerino della frutta che l'anno scorso ha duramente colpito i frutteti e le vigne del paese, suscitano preoccupazione fra gli apicoltori. I due insetticidi di cui la Confederazione ha approvato l'uso, anche se solo su autorizzazione cantonale, potrebbero infatti peggiorare il già precario stato di salute delle api. "Entrambe le sostanze sono pericolose, mortali in certe condizioni", afferma Davide Conconi, presidente della società ticinese di apicoltura, che precisa: "se l'applicazione verrà fatta seguendo alla lettera le notizie di imballaggio, i danni saranno minimi", ma c'è il pericolo di un dosaggio eccessivo.
pon/CSI
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