Insecticide Efficacy Against Dbm, 1995

Three insecticides were evaluated at the Kula Research Station, Maui Agricultural Park, from July to September. The field was set up in a RCB design with five treatments and four replications (blocks). Each treatment plot consisted of a single row of cabbage planted at 18 inch between plant spacing. Treatment plots in each block were separated by a 24 inch row spacing. Blocks were separated by a 36 inch spacing. Total field size was 68 ft. by 70 ft. Treatments were applied using a CO2 backpack sprayer set at 60 psi with an output of 100 gpa. One hollow cone nozzle (TX-26) was used per row. The first treatment was applied one week after transplanting into the field on 18 Jul. Subsequently, six applications were made weekly until the week before harvest on the following dates: 25 Jul, 1, 8, 15, 22, and 29 Aug.