Project Number: 5302-43000-034-01
Project Type: Trust

Start Date: Aug 01, 2003
End Date: Jul 31, 2008

Objective:
Determine whether the effects of mating disruption and hullsplit insecticide treatments are additive or synergistic.

Approach:
A square 256 ha almond orchard with historically high abundance of NOW will be divided into 16 16-ha square blocks, and the center 8 ha of each of these blocks will be used as a treatment plot. Treatments examined will include 1) controls receiving no mating disruption or insecticide; 2) 40 Puffers distributed evenly throughout the plot and emitting 48 mg per ha per day of NOW pheromone; 3) a hullsplit insecticide treatment; or 4) both treatments 2 and 3. Treatments will be assigned randomly such that no treatment is repeated within a row or column. Virgin female-baited flight traps (4 per plot), tended weekly throughout the growing season, will be used to monitor the effects of the treatments on the ability of males to find unmated females, and harvest nut samples will be used to assess the effect of the treatments on navel orangeworm damage in almonds. The will flight trap and harvest sample data will be analyzed using a Latin squares design, with repeated measures in the case of the flight traps. Documents Trust with Almond Bd of CA. Log 23592. Formerly 5302-43000-031-07T (6/2008)