La popolazione della drosophila suzukii, colpevole di attaccare la frutta rendendola acida, nella Svizzera italiana sta diminuendo. Chi lavora nel settore agricolo, però, cerca comunque di tutelarsi in attesa di una completa sconfitta dell’insetto nocivo per mirtilli, ciliegi e uva.
Il settore si difende adottano soprattutto le reti che non riparano solo da grandine e selvaggina, ma anche dal parassita.
Il calo della presenza della drosophila è evidente
I dati mostrano che sia il numero di maschi che quello di femmine dell’animale è in calo rispetto al 2014, in particolare nei mesi di maggio e giugno, complice soprattutto il caldo.
La meteo dovrebbe quindi continuare la sua azione “purificatrice”: Locarno-Monti ha infatti annunciato ancora temperature al di sopra della media stagionale.
Quot/ab
Dal Quotidiano:
Troppo caldo per la drosophila
Il Quotidiano 09.07.2015, 22:09
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