Il canton Ticino ha pronto un piano di azione per contrastare la drosophila suzuki, un moscerino asiatico ghiotto di frutta che dalla sua comparsa nel 2011 ha creato non pochi grattacapi, soprattutto a chi ha la vigna, perché rischia di far marcire l'uva. Una scheda tecnica sarà inviata a breve a tutti i viticoltori. Il nemico della vite è sopravvissuto all'inverno mite e debellarlo non sarà facile, ma nel frattempo sono state elaborate dalle strategie e la lotta è già iniziata: "Stiamo già monitorando la presenza dell'insetto, con le bottigliette di aceto di mele", conferma Luigi Colombi del servizio fitosanitario cantonale. Con l'Agroscope di Cadenazzo quest'anno si faranno poi ancora studi ed esperimenti, "anche sui prodotti da utilizzare". Si spera infine nell'aiuto della meteo: un'estate calda, sopra i 30 gradi, non permette alla drosophila di svilupparsi.
pon/CSI
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