Application of wide area mating disruption for control of oriental fruit moth Grapholita molesta Busck (Lepîdoptera: Tortricidae) migration in Victoria (Australia) | [Application de la confusion sexuelle en grande surface pour lutter contre la migration de la tordeuse orientale du pêcher Grapholita molesta Busck (Lepidoptera: Tortricidae) dans l'état de Victoria (Australie)]
1999
Il'icherv, A.L. ((Institute of Sustainable Irrigated Agriculture, Tatura (Australie)) | Hossain, M.S. | Jerie, P.H.
The Wide Area Mating Disruption (WAMD) strategy has been applied to improve the protection of orchards against migration of Oriental Fruit Moth (OFM). During 1997-98 season the experimental area over 800 hectares of orchard in the Murray-Goulburn Valley, Victoria was saturated with OFM sex pheromone to test the concept of WAMD. Mating disruption lures called "Isomate OFM Plus" (Biocontrol Ltd.) were applied on all fruit trees including peaches and nectarines, as well as pears, apples, apricots and plums in which mating disruption (MD) was not normally used. Such a large area was used to ensure that any edge effects and migration of mated OFM females would be overcome. The initial level of OFM population in 1996-97 season, before the application of the WAMD experiment was measured. During 1997-98 season the WAMD was closely monitored for OFM. More than 230 food traps for OFM monitoring were placed in the area and shoot tip and fruit damage assessments were made. Results of detail monitoring showed a reduction of OFM population in the WAMD. Also shoot tip and fruit damage in the peach blocks was reduced when surrounding pears were treated with MD compared to chemical control. The WAMD experiment showed that the OFM population was greatly reduced in the hot spots and edge effects that could be explained by migration of OFM were controlled
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