Oriental chestnut gall wasp (Dryocosmus kuriphilus) is an insect which causes abnormal growths (galls) on sweet chestnut trees. In summer (June-July), the insect lays eggs in the buds, leaves and petioles of chestnut shoots. Adult wasps emerge from galls, locate new chestnut shoots and lay eggs that will hatch into the next generation. The galls cause leaf distortion, suppress shoot elongation and reduce nut production.
Risk management plans and tools
Chestnut gall wasp (Dryocosmus kuriphilus) risk workshop:
State-of-the art knowledge, prevention, monitoring and control systems
19 October 2017 in Vila Real (Portugal)
This workshop is part of the series of transnational training workshops organised by the PLURIFOR project. Transnational training workshops aim to exchange know-how about forest risk management between partners and associated partners of the project.
Reports describing how the chestnut gall wasp risk was managed in the concerned regions at the beginning of the project, in 2016:
- Forest risk management in Castilla y León (2016) (ES)
- Forest risk management in Portugal (2016) (PT)
Report summarising the management of the eight risks in the concerned regions at the beginning of the project, in 2016:
- Portugal: Edmundo Sousa (INIAV) – edmundo.sousa @ iniav.pt – coordinator
- Castilla y León: Jorge Casado (TRAGSA) – jcaa @ tragsa.es