INTEGRATION OF BIORATIONAL TACTICS FOR MANAGEMENT OF CODLING MOTH, 2005

The evaluation of efficacy of CpGV, liquid pheromone, pheromone dispenser and azinphos methyl 35%HP as a commercial control for CM was conducted in a 15±2 yr-old commercial ‘Delicious’ apple orchard in Arteaga, Coahuila, Mexico. To monitor adult activity of CM, seven pheromone traps 1X codlemone (BioLure) were placed in plots and checked weekly to detect the first moth activity (biofix) to start the application treatments. The dispensers were changed at 490 DD for the second generation after biofix. A CRB design with seven treatments was used; plots consisted of six trees per treatment having a total of 42 experimental units. One application of CpGV and azinphos methyl treatments were made in each pest generation using a motorized backpack air-blast sprayer calibrated to deliver 1000 liters/ha and were scheduled to coincide with emergence of the first instar larvae at 120 DD after biofix. Developmental rates and thresholds (lower 12 °C upper 34 °C). One application of pheromone dispenser per each generation and five applications of liquid pheromone for the two generations with concentrations of 210, 250 and 275 ml/ha were made immediately after biofix (Table 1). Fruit injury was evaluated by counting the number of fruit damaged by CM. One hundred fruits per tree were examined at random, for a total of 600 per treatment. Four post-treatment counts were taken. Data were analyzed with ANOVA and means separation used Tukey’s HSD test.