Abstract
In Central Italy Chestnut Gall Wasp Dryocosmus kuriphilus Yasumatsu, Chestnut Weevils and two Chestnut Moths, Cydia fagiglandana (Zeller) and C. spendana (Hubner) are the key insect pests of chestnut orchards. In Latium Region two species of chestnut weevils, Curculio elephas (Gyll.) and C. propinquus (Desbr.), are represented at 5% and 95% respectively. These two carpophagous insects can generate severe yield losses, variable in the years from 20 to 90%. In order to minimize the rate of damaged chestnuts, chemical control trials were carried out comparing two active ingredients: Thiacloprid and Etofenprox. The results show a higher effectiveness of a.i. Thiacloprid with respect to Etofenprox and control treatments.
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